{"title":"Bearings","description":"","products":[{"product_id":"pom-plastic-bearing-glass-ball-miniature-deep-groove-ball-bearings","title":"POM Plastic Bearing Glass Ball Miniature Deep Groove Ball Bearings","description":"\u003ch2\u003e1. Product core introduction\u003c\/h2\u003ePOM Plastic Bearing Glass Ball Miniature Deep Groove Ball Bearings are a revolutionary solution designed to meet the unique demands of modern, compact, and precision-driven applications. These bearings combine the best of advanced materials and engineering design to offer reliable and efficient rotational support in a miniature form factor. The use of POM plastic provides excellent chemical resistance and lightweight properties, while the glass balls ensure smooth and precise movement. Whether it's in the intricate mechanisms of electronics, the delicate instruments of the medical field, or the innovative designs of consumer products, our bearings are engineered to deliver outstanding performance, reducing friction, enhancing durability, and enabling the seamless operation of your equipment.\u003cbr\u003e\u003ch2\u003e2. The main characteristics of the product\u003c\/h2\u003e        •     POM Plastic Housing\nThe bearing's outer housing is crafted from POM (Polyoxymethylene) plastic, which offers remarkable chemical resistance. This makes the bearings suitable for use in environments where exposure to corrosive substances is a concern, such as in chemical laboratories, medical equipment, and certain industrial processes. The POM material also provides excellent dimensional stability, ensuring that the bearing maintains its shape and performance over time. Additionally, its lightweight nature is advantageous in applications where weight reduction is crucial, like in portable electronics and aerospace components.\n        •     Glass Balls for Precision\nThe use of glass balls as the rolling elements brings several benefits. Glass balls are extremely smooth and hard, resulting in low friction and wear during operation. This enables the bearings to offer precise and smooth rotation, which is essential for applications that require high accuracy, such as in precision measuring instruments and optical equipment. The hardness of the glass balls also contributes to the overall durability of the bearing, allowing it to withstand repeated use without significant degradation.\n        •     Miniature Deep Groove Design\nThe miniature deep groove ball bearing design allows for efficient load distribution and the ability to handle both radial and axial loads. The deep grooves provide a stable path for the glass balls to roll, minimizing the risk of ball skidding and ensuring reliable operation. The compact size of the bearing makes it ideal for use in tight spaces, where traditional bearings may not fit. This design feature is especially valuable in the development of miniaturized devices, such as wearable technology, micro-robots, and handheld medical devices.\n        •     Low Friction and Quiet Operation\nThanks to the combination of the smooth glass balls and the precisely machined POM housing, our bearings operate with minimal friction. This not only reduces power consumption but also results in quiet operation, making them suitable for applications where noise reduction is important, such as in audio equipment and office machinery. The low friction characteristics also contribute to a longer service life by minimizing wear on the bearing components.\n        •     Cost-Effective Solution\nThe use of POM plastic and glass balls offers a cost-effective alternative to traditional metal bearings, especially in applications where high-performance is required but budget constraints are a factor. The relatively low cost of materials and manufacturing processes makes these bearings an attractive option for mass-produced consumer products and small-scale industrial applications.\u003cbr\u003e\u003ch2\u003e3. Product use scene\u003c\/h2\u003e        •     Electronics Industry\nIn smartphones, tablets, and other handheld electronic devices, these bearings are used to support the rotation of components such as the camera module, vibration motor, and cooling fan. The miniature size and low friction characteristics are perfect for the compact and sensitive nature of these electronics, ensuring smooth operation and reducing power consumption. In hard disk drives, the bearings help to ensure the precise rotation of the spindle, allowing for rapid and accurate data access.\n        •     Medical Devices\nFor insulin pumps, dialysis machines, and other implantable or handheld medical devices, the chemical resistance and biocompatibility of the POM plastic are essential. The precision and quiet operation of the bearings are also crucial in these applications, where accurate dosing and minimal patient discomfort are required. Surgical instruments that require smooth rotation, such as biopsy needles and arthroscopic tools, can also benefit from these high-quality bearings.\n        •     Consumer Goods\nIn toys, small household appliances, and personal care products, the lightweight and cost-effective nature of the bearings make them a popular choice. For example, in electric toothbrushes, the bearings enable the smooth rotation of the brush head, enhancing the user experience. In toys with moving parts, such as remote-controlled cars and action figures, the bearings provide reliable and durable movement.\n        •     Automotive Electronics\nIn automotive sensors, such as wheel speed sensors and throttle position sensors, the miniature bearings ensure accurate and reliable operation. The ability to withstand vibrations and temperature fluctuations in the automotive environment is also important. In electric vehicle motors and power electronics, the low friction and high precision of the bearings contribute to the efficient and reliable operation of these systems.\u003cbr\u003e\u003ch2\u003e4. Product use instructions\u003c\/h2\u003e1、Installation\nBefore installation, ensure that the work area is clean and free from any debris or contaminants. Use clean, lint-free gloves to handle the bearing to prevent fingerprints and other residues from affecting its performance.\nInspect the bearing for any signs of damage or defects, such as scratches, dents, or irregularities on the raceways or balls. If any issues are detected, do not install the bearing and contact the supplier for a replacement.\nWhen installing the bearing onto the shaft, use a gentle and even pressure to ensure proper seating. Avoid using excessive force, as this could cause damage to the bearing or the shaft. If necessary, use a suitable installation tool, such as a press fit sleeve or a bearing installer, to ensure accurate and damage-free installation.\nEnsure that the bearing is properly aligned with the shaft and the housing. Any misalignment can lead to increased wear and reduced bearing life. Use alignment tools or precision jigs to achieve the correct alignment, especially in applications where precision is critical.\n2、Operation\nStart the equipment gradually and allow the bearing to warm up to its operating temperature. Avoid sudden starts and stops, as this can cause excessive stress on the bearing and lead to premature failure.\nMonitor the operating temperature, vibration, and noise levels of the bearing during operation. Any significant changes in these parameters could indicate a problem, such as insufficient lubrication, misalignment, or overloading. If detected, take immediate action to address the issue and prevent further damage.\nEnsure that the equipment is operating within the specified load and speed limits of the bearing. Exceeding these limits can significantly reduce the bearing's lifespan and may result in catastrophic failure. Refer to the product documentation or consult the supplier for the recommended operating parameters.\n3、Maintenance\nRegularly clean the bearing and its surrounding area to remove any dirt, dust, or other contaminants that could accumulate during operation. Use a suitable cleaning solvent and a soft brush or cloth to gently wipe the bearing surfaces. Avoid using harsh chemicals or abrasive materials that could damage the bearing.\nCheck the lubrication level and quality of the bearing regularly. The frequency of lubrication depends on the operating conditions and the type of lubricant used. Use a high-quality lubricant that is suitable for the application and the operating environment. Follow the manufacturer's recommendations for lubricant application methods and quantities.\nPeriodically inspect the bearing for signs of wear, such as pitting, spalling, or increased clearance. If the bearing shows signs of significant wear, it should be replaced promptly to prevent further damage to the equipment. Use a micrometer or other precision measurement tools to accurately assess the bearing's condition.\n        •     By following these guidelines, you can ensure the optimal performance and longevity of our POM Plastic Bearing Glass Ball Miniature Deep Groove Ball Bearings in your applications. If you have any questions or need further technical assistance, please do not hesitate to contact our customer support team.","brand":"HomeDIYer","offers":[{"title":"603-3mm-9mm-3mm \/ 1Pcs \/ POM","offer_id":50762365010194,"sku":"GLBZSJ056781","price":1.16,"currency_code":"USD","in_stock":true},{"title":"604-4mm-12mm-4mm \/ 1Pcs \/ POM","offer_id":50762365042962,"sku":"GLBZSJ056782","price":1.29,"currency_code":"USD","in_stock":true},{"title":"605-5mm-14mm-5mm \/ 1Pcs \/ POM","offer_id":50762365075730,"sku":"GLBZSJ056783","price":1.42,"currency_code":"USD","in_stock":true},{"title":"606-6mm-17mm-6mm \/ 1Pcs \/ POM","offer_id":50762365108498,"sku":"GLBZSJ056784","price":1.68,"currency_code":"USD","in_stock":true},{"title":"607-7mm-19mm-6mm \/ 1Pcs \/ POM","offer_id":50762365141266,"sku":"GLBZSJ056785","price":1.85,"currency_code":"USD","in_stock":true},{"title":"608-8mm-22mm-7mm \/ 1Pcs \/ POM","offer_id":50762365174034,"sku":"GLBZSJ056786","price":2.15,"currency_code":"USD","in_stock":true},{"title":"609-9mm-24mm-7mm \/ 1Pcs \/ POM","offer_id":50762365206802,"sku":"GLBZSJ056787","price":2.53,"currency_code":"USD","in_stock":true},{"title":"634-4mm-16mm-5mm \/ 1Pcs \/ POM","offer_id":50762365239570,"sku":"GLBZSJ056790","price":2.53,"currency_code":"USD","in_stock":true},{"title":"635-5mm-19mm-6mm \/ 1Pcs \/ POM","offer_id":50762365272338,"sku":"GLBZSJ056789","price":1.98,"currency_code":"USD","in_stock":true},{"title":"636-6mm-22mm-7mm \/ 1Pcs \/ POM","offer_id":50762365305106,"sku":"GLBZSJ056788","price":1.63,"currency_code":"USD","in_stock":true},{"title":"638-8mm-28mm-9mm \/ 1Pcs \/ POM","offer_id":50762365337874,"sku":"GLSMZC0127","price":2.5,"currency_code":"USD","in_stock":true},{"title":"623-3mm-10mm-4mm \/ 1Pcs \/ POM","offer_id":50762365370642,"sku":"GLBZSJ056799","price":1.16,"currency_code":"USD","in_stock":true},{"title":"624-4mm-13mm-5mm \/ 1Pcs \/ POM","offer_id":50762365403410,"sku":"GLBZSJ056793","price":1.29,"currency_code":"USD","in_stock":true},{"title":"625-5mm-16mm-5mm \/ 1Pcs \/ POM","offer_id":50762365436178,"sku":"GLBZSJ056794","price":1.41,"currency_code":"USD","in_stock":true},{"title":"626-6mm-19mm-6mm \/ 1Pcs \/ POM","offer_id":50762365468946,"sku":"GLBZSJ056795","price":1.67,"currency_code":"USD","in_stock":true},{"title":"627-7mm-22mm-7mm \/ 1Pcs \/ POM","offer_id":50762365501714,"sku":"GLBZSJ056796","price":1.84,"currency_code":"USD","in_stock":true},{"title":"628-8mm-24mm-8mm \/ 1Pcs \/ POM","offer_id":50762365534482,"sku":"GLBZSJ056797","price":2.27,"currency_code":"USD","in_stock":true},{"title":"629-9mm-26mm-8mm \/ 1Pcs \/ POM","offer_id":50762365567250,"sku":"GLBZSJ056798","price":2.52,"currency_code":"USD","in_stock":true},{"title":"603-3mm-9mm-3mm \/ 5Pcs \/ POM","offer_id":50762365600018,"sku":"GLBZSJ056781x5","price":2.88,"currency_code":"USD","in_stock":true},{"title":"604-4mm-12mm-4mm \/ 5Pcs \/ POM","offer_id":50762365632786,"sku":"GLBZSJ056782x5","price":3.52,"currency_code":"USD","in_stock":true},{"title":"605-5mm-14mm-5mm \/ 5Pcs \/ POM","offer_id":50762365665554,"sku":"GLBZSJ056783x5","price":4.16,"currency_code":"USD","in_stock":true},{"title":"606-6mm-17mm-6mm \/ 5Pcs \/ POM","offer_id":50762365698322,"sku":"GLBZSJ056784x5","price":5.44,"currency_code":"USD","in_stock":true},{"title":"607-7mm-19mm-6mm \/ 5Pcs \/ POM","offer_id":50762365731090,"sku":"GLBZSJ056785x5","price":6.29,"currency_code":"USD","in_stock":true},{"title":"608-8mm-22mm-7mm \/ 5Pcs \/ POM","offer_id":50762365763858,"sku":"GLBZSJ056786x5","price":7.78,"currency_code":"USD","in_stock":true},{"title":"609-9mm-24mm-7mm \/ 5Pcs \/ POM","offer_id":50762365796626,"sku":"GLBZSJ056787x5","price":9.71,"currency_code":"USD","in_stock":true},{"title":"634-4mm-16mm-5mm \/ 5Pcs \/ POM","offer_id":50762365829394,"sku":"GLBZSJ056790x5","price":9.71,"currency_code":"USD","in_stock":true},{"title":"635-5mm-19mm-6mm \/ 5Pcs \/ POM","offer_id":50762365862162,"sku":"GLBZSJ056789x5","price":6.93,"currency_code":"USD","in_stock":true},{"title":"636-6mm-22mm-7mm \/ 5Pcs \/ POM","offer_id":50762365894930,"sku":"GLBZSJ056788x5","price":5.23,"currency_code":"USD","in_stock":true},{"title":"638-8mm-28mm-9mm \/ 5Pcs \/ POM","offer_id":50762365927698,"sku":"GLSMZC0127x5","price":9.57,"currency_code":"USD","in_stock":true},{"title":"623-3mm-10mm-4mm \/ 5Pcs \/ POM","offer_id":50762365960466,"sku":"GLBZSJ056799x5","price":2.85,"currency_code":"USD","in_stock":true},{"title":"624-4mm-13mm-5mm \/ 5Pcs \/ POM","offer_id":50762365993234,"sku":"GLBZSJ056793x5","price":3.49,"currency_code":"USD","in_stock":true},{"title":"625-5mm-16mm-5mm \/ 5Pcs \/ POM","offer_id":50762366026002,"sku":"GLBZSJ056794x5","price":4.13,"currency_code":"USD","in_stock":true},{"title":"626-6mm-19mm-6mm \/ 5Pcs \/ POM","offer_id":50762366058770,"sku":"GLBZSJ056795x5","price":5.41,"currency_code":"USD","in_stock":true},{"title":"627-7mm-22mm-7mm \/ 5Pcs \/ POM","offer_id":50762366091538,"sku":"GLBZSJ056796x5","price":6.26,"currency_code":"USD","in_stock":true},{"title":"628-8mm-24mm-8mm \/ 5Pcs \/ POM","offer_id":50762366124306,"sku":"GLBZSJ056797x5","price":8.4,"currency_code":"USD","in_stock":true},{"title":"629-9mm-26mm-8mm \/ 5Pcs \/ POM","offer_id":50762366157074,"sku":"GLBZSJ056798x5","price":9.68,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/02_e9bac59b-340c-46b4-9658-655ffcff8996.jpg?v=1762198926"},{"product_id":"silicon-nitride-full-ceramic-ball-bearing-full-balls-bearings","title":"Silicon Nitride Full Ceramic Ball Bearing Full Balls Bearings","description":"\u003ch2\u003e1. Product core introduction\u003c\/h2\u003eSilicon Nitride Full Ceramic Ball Bearing Full Balls Bearings represent a cutting-edge solution in the world of bearing technology. Engineered with precision and innovation, these bearings are designed to meet the most demanding requirements of modern industries. Made entirely from silicon nitride ceramic, they offer a unique combination of properties that set them apart from traditional bearings. Whether it's in high-speed machinery, corrosive environments, or applications where precision and reliability are non-negotiable, our bearings provide the essential support for smooth and efficient operation. They are the go-to choice for engineers and manufacturers seeking to enhance the performance and longevity of their equipment, ensuring optimal functionality and minimal downtime.\u003cbr\u003e\u003ch2\u003e2. The main characteristics of the product\u003c\/h2\u003e        •     Full Ceramic Construction\nThe use of silicon nitride ceramic throughout the bearing, including the balls, rings, and cages (if applicable), provides exceptional hardness and wear resistance. This means that the bearings can withstand heavy loads and high speeds without significant deformation or degradation. The ceramic material also exhibits excellent corrosion resistance, making it suitable for use in harsh and corrosive environments, such as chemical processing plants, marine applications, and food processing machinery.\n        •     Full Balls Design for Enhanced Load Capacity\nThe full balls design maximizes the contact area between the balls and the raceways, resulting in a significant increase in load-carrying capacity. This allows the bearings to handle heavier loads compared to bearings with fewer balls or different designs. The evenly distributed load also helps to reduce stress concentrations, prolonging the life of the bearing and enhancing its overall reliability. In applications where high loads are a constant factor, such as in heavy machinery and industrial equipment, the full balls design is a game-changer.\n        •     Low Friction and High Efficiency\nSilicon nitride ceramic has a naturally low coefficient of friction, which means that our bearings operate with minimal resistance. This not only reduces power consumption but also results in smoother rotation and less heat generation. The low friction characteristics contribute to a longer service life by minimizing wear on the bearing components. In applications where energy efficiency and smooth operation are crucial, such as in electric motors, turbines, and precision instruments, our bearings offer a distinct advantage.\n        •     High Temperature Resistance\nThese bearings can withstand high temperatures without losing their mechanical properties. The silicon nitride ceramic material is stable at elevated temperatures, allowing the bearings to operate reliably in applications where heat is a factor, such as in high-temperature furnaces, aerospace engines, and automotive turbochargers. The ability to maintain performance in extreme thermal conditions makes our bearings a reliable choice for industries operating in challenging environments.\n        •     Chemical Inertness\nThe ceramic material is chemically inert, which means that it does not react with most chemicals and substances. This property is essential in applications where the bearing may come into contact with corrosive or reactive materials. In the chemical and pharmaceutical industries, for example, our bearings can resist the effects of acids, alkalis, and other aggressive chemicals, ensuring the integrity and reliability of the equipment.\n        •     Electrical Insulation Properties\nSilicon nitride ceramic is an excellent electrical insulator. This makes our bearings suitable for applications where electrical conductivity could cause problems, such as in electrical motors, generators, and power transmission equipment. The insulation properties prevent electrical current from passing through the bearing, reducing the risk of short circuits and ensuring the safe operation of the\u003cbr\u003e\u003ch2\u003e3. Product use scene\u003c\/h2\u003e        •     Industrial Machinery\nIn manufacturing plants, these bearings are used in a wide range of machinery, including machine tools, pumps, compressors, and conveyors. The high load-carrying capacity and durability of the bearings ensure reliable operation in heavy-duty applications. In the automotive industry, they are used in engine components, transmissions, and wheel bearings, where their resistance to heat and wear is crucial for the performance and longevity of the vehicle.\n        •     Aerospace and Defense\nFor aircraft engines, satellite systems, and military equipment, the Silicon Nitride Full Ceramic Ball Bearing Full Balls Bearings offer the combination of strength, light weight, and resistance to extreme conditions. The ability to operate at high speeds and in harsh environments, including exposure to high temperatures and corrosive substances, is essential for the safety and efficiency of aerospace and defense applications. The bearings also contribute to the overall performance and reliability of the equipment, reducing maintenance requirements and increasing mission success rates.\n        •     Medical and Biotechnology\nIn medical devices such as surgical instruments, implantable pumps, and diagnostic equipment, the bearings' precision and chemical inertness are vital. The smooth operation and low friction characteristics are also important for ensuring accurate and reliable performance. In biotechnology applications, where sterility and resistance to chemicals are crucial, our bearings can meet the strict requirements of the industry.\n        •     Semiconductor and Electronics Manufacturing\nIn semiconductor fabrication equipment, the bearings are used in high-speed spindles and precision motion control systems. The low friction and high precision of the bearings are essential for ensuring the accurate alignment and movement of delicate semiconductor components. In electronics manufacturing, they are used in various equipment such as hard disk drives, printers, and scanners, where their reliability and resistance to wear contribute to the overall performance and lifespan of the products.\u003cbr\u003e\u003ch2\u003e4. Product use instructions\u003c\/h2\u003e1、Installation\nBefore installation, ensure that the work area is clean and free from any debris or contaminants. Use clean, lint-free gloves to handle the bearing to prevent fingerprints and other residues from affecting its performance.\nInspect the bearing for any signs of damage or defects, such as scratches, dents, or irregularities on the raceways or balls. If any issues are detected, do not install the bearing and contact the supplier for a replacement.\nWhen installing the bearing onto the shaft, use a gentle and even pressure to ensure proper seating. Avoid using excessive force, as this could cause damage to the bearing or the shaft. If necessary, use a suitable installation tool, such as a press fit sleeve or a bearing installer, to ensure accurate and damage-free installation.\nEnsure that the bearing is properly aligned with the shaft and the housing. Any misalignment can lead to increased wear and reduced bearing life. Use alignment tools or precision jigs to achieve the correct alignment, especially in applications where precision is critical.\n2、Operation\nStart the equipment gradually and allow the bearing to warm up to its operating temperature. Avoid sudden starts and stops, as this can cause excessive stress on the bearing and lead to premature failure.\nMonitor the operating temperature, vibration, and noise levels of the bearing during operation. Any significant changes in these parameters could indicate a problem, such as insufficient lubrication, misalignment, or overloading. If detected, take immediate action to address the issue and prevent further damage.\nEnsure that the equipment is operating within the specified load and speed limits of the bearing. Exceeding these limits can significantly reduce the bearing's lifespan and may result in catastrophic failure. Refer to the product documentation or consult the supplier for the recommended operating parameters.\n3、Maintenance\nRegularly clean the bearing and its surrounding area to remove any dirt, dust, or other contaminants that could accumulate during operation. Use a suitable cleaning solvent and a soft brush or cloth to gently wipe the bearing surfaces. Avoid using harsh chemicals or abrasive materials that could damage the bearing.\nCheck the lubrication level and quality of the bearing regularly. The frequency of lubrication depends on the operating conditions and the type of lubricant used. Use a high-quality lubricant that is suitable for the application and the operating environment. Follow the manufacturer's recommendations for lubricant application methods and quantities.\nPeriodically inspect the bearing for signs of wear, such as pitting, spalling, or increased clearance. If the bearing shows signs of significant wear, it should be replaced promptly to prevent further damage to the equipment. Use a micrometer or other precision measurement tools to accurately assess the bearing's condition.\n        •     By following these guidelines, you can ensure the optimal performance and longevity of our Silicon Nitride Full Ceramic Ball Bearing Full Balls Bearings in your applications. If you have any questions or need further technical assistance, please do not hesitate to contact our customer support team.","brand":"HomeDIYer","offers":[{"title":"6900-10mm-22mm-6mm \/ Silicon Nitride","offer_id":50762366222610,"sku":"GLBZSJ056932","price":14.09,"currency_code":"USD","in_stock":true},{"title":"6901-12mm-24mm-6mm \/ Silicon Nitride","offer_id":50762366255378,"sku":"GLBZSJ056933","price":17.25,"currency_code":"USD","in_stock":true},{"title":"6902-15mm-28mm-7mm \/ Silicon Nitride","offer_id":50762366288146,"sku":"GLBZSJ056934","price":15.03,"currency_code":"USD","in_stock":true},{"title":"6903-17mm-30mm-7mm \/ Silicon Nitride","offer_id":50762366320914,"sku":"GLBZSJ056935","price":16.94,"currency_code":"USD","in_stock":true},{"title":"6904-20mm-37mm-9mm \/ Silicon Nitride","offer_id":50762366353682,"sku":"GLBZSJ056936","price":20.45,"currency_code":"USD","in_stock":true},{"title":"6905-25mm-42mm-9mm \/ Silicon 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Product core introduction\u003c\/h2\u003e\n\u003cp\u003eSilicon Nitride Ceramic Bearings with High TEMP Resistance up to 1200℃ and Insulation, accompanied by a precision-engineered cage, are a revolutionary solution for industries operating in extreme thermal and electrical environments. These bearings are designed to meet the most challenging demands where conventional bearings would fail. By leveraging the unique properties of silicon nitride ceramic, we offer a product that not only provides reliable rotational support but also ensures safety and efficiency in high-temperature applications. Whether it's in the heart of a steel mill, the core of a power generation facility, or the crucible of advanced manufacturing processes, our bearings are the key to unlocking enhanced performance and durability, reducing downtime and maintenance costs while pushing the boundaries of what's possible in extreme conditions.\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e2. The main characteristics of the product\u003c\/h2\u003e\n\u003cp\u003e• Exceptional High-Temperature Resistance The silicon nitride ceramic material used in our bearings is specifically formulated to withstand temperatures as high as 1200℃. This remarkable property allows them to operate reliably in environments where other bearings would simply melt or degrade. The ceramic's inherent stability at extreme temperatures ensures that the bearing's structural integrity and performance are maintained, even under prolonged exposure to intense heat. This makes our bearings ideal for applications such as industrial furnaces, kilns, and high-temperature turbines.\u003c\/p\u003e\n\u003cp\u003e• Outstanding Insulation Properties These bearings offer excellent electrical insulation capabilities, thanks to the non-conductive nature of silicon nitride ceramic. This insulation is crucial in applications where electrical conductivity could pose a safety hazard or interfere with the operation of sensitive equipment. In power plants, for example, the bearings prevent electrical current from passing through the rotating components, reducing the risk of short circuits and ensuring the smooth and safe operation of generators and motors. The insulation also helps to protect against electromagnetic interference, enhancing the performance of electronic components in proximity to the bearings.\u003c\/p\u003e\n\u003cp\u003e• Precision-Machined Cage Design The accompanying cage is meticulously designed and precision-machined to enhance the overall performance and durability of the bearing. The cage not only provides proper spacing and guidance for the rolling elements but also contributes to the bearing's load-carrying capacity. It is engineered to withstand the high temperatures and mechanical stresses associated with the application, ensuring that the balls or rollers move smoothly and evenly within the raceways. The cage's design also aids in reducing friction and wear, further extending the life of the bearing.\u003c\/p\u003e\n\u003cp\u003e• Low Friction and Wear Resistance Silicon nitride ceramic has a naturally low coefficient of friction, which means that our bearings operate with minimal resistance. This not only reduces energy consumption but also results in less wear and tear on the bearing components. The smooth operation of the bearings also contributes to a quieter and more efficient performance, making them suitable for applications where noise reduction and precision are important, such as in high-speed machinery and precision instruments.\u003c\/p\u003e\n\u003cp\u003e• Chemical Resistance and Corrosion Protection In addition to their high-temperature and insulation properties, our bearings exhibit excellent resistance to a wide range of chemicals and corrosive substances. This makes them suitable for use in harsh industrial environments where exposure to acids, alkalis, and other corrosive agents is common. The chemical resistance of the silicon nitride ceramic helps to prevent the degradation of the bearing surfaces, ensuring long-term reliability and performance.\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e3. Product use scene\u003c\/h2\u003e\n\u003cp\u003e• Steel and Metal Processing Industry In steel mills, the bearings are used in various high-temperature equipment such as continuous casting machines, hot rolling mills, and annealing furnaces. The ability to withstand extreme heat and provide reliable rotation is essential for the smooth operation of these processes. The insulation properties also prevent electrical issues in the electrically charged environment of the mill, ensuring the safety of workers and the integrity of the production line.\u003c\/p\u003e\n\u003cp\u003e • Power Generation Plants For coal-fired, gas-fired, and nuclear power plants, our bearings are used in turbines, generators, and other critical rotating equipment. The high-temperature resistance allows them to operate efficiently in the harsh conditions of the power generation process, while the insulation protects against electrical faults. The durability and reliability of the bearings contribute to the overall stability and productivity of the power plant, reducing maintenance downtime and increasing energy output.\u003c\/p\u003e\n\u003cp\u003e• Aerospace and Aviation In aircraft engines and space exploration vehicles, the bearings are used in components that are exposed to high temperatures during operation. The lightweight and high-strength properties of silicon nitride ceramic, combined with its temperature resistance and insulation capabilities, make it an ideal choice for aerospace applications. The bearings help to reduce the overall weight of the vehicle while ensuring reliable performance in the extreme conditions of flight and space travel.\u003c\/p\u003e\n\u003cp\u003e• Advanced Manufacturing and Research Facilities In industries such as semiconductor manufacturing, where precise control of temperature and electrical conditions is crucial, our bearings are used in vacuum chambers and high-temperature processing equipment. The insulation and high-temperature resistance ensure the integrity of the manufacturing process, while the low friction and wear characteristics contribute to the precision and repeatability of the operations. In research facilities, the bearings are used in experimental setups that involve extreme temperatures and electrical measurements, providing reliable data collection and analysis.\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e4. Product use instructions\u003c\/h2\u003e\n\u003cp\u003e1、Installation Before installation, ensure that the work area is clean and free from any debris or contaminants. Use clean, lint-free gloves to handle the bearing to prevent fingerprints and other residues from affecting its performance. Inspect the bearing for any signs of damage or defects, such as scratches, dents, or irregularities on the raceways or balls. If any issues are detected, do not install the bearing and contact the supplier for a replacement. When installing the bearing onto the shaft, use a gentle and even pressure to ensure proper seating. Avoid using excessive force, as this could cause damage to the bearing or the shaft. If necessary, use a suitable installation tool, such as a press fit sleeve or a bearing installer, to ensure accurate and damage-free installation. Ensure that the bearing is properly aligned with the shaft and the housing. Any misalignment can lead to increased wear and reduced bearing life. Use alignment tools or precision jigs to achieve the correct alignment, especially in applications where precision is critical.\u003c\/p\u003e\n\u003cp\u003e2、Operation Start the equipment gradually and allow the bearing to warm up to its operating temperature. Avoid sudden starts and stops, as this can cause excessive stress on the bearing and lead to premature failure. Monitor the operating temperature, vibration, and noise levels of the bearing during operation. Any significant changes in these parameters could indicate a problem, such as insufficient lubrication, misalignment, or overloading. If detected, take immediate action to address the issue and prevent further damage. Ensure that the equipment is operating within the specified load and speed limits of the bearing. Exceeding these limits can significantly reduce the bearing's lifespan and may result in catastrophic failure. Refer to the product documentation or consult the supplier for the recommended operating parameters.\u003c\/p\u003e\n\u003cp\u003e 3、Maintenance Regularly clean the bearing and its surrounding area to remove any dirt, dust, or other contaminants that could accumulate during operation. Use a suitable cleaning solvent and a soft brush or cloth to gently wipe the bearing surfaces. Avoid using harsh chemicals or abrasive materials that could damage the bearing. Check the lubrication level and quality of the bearing regularly. The frequency of lubrication depends on the operating conditions and the type of lubricant used. Use a high-quality lubricant that is suitable for the application and the operating environment. Follow the manufacturer's recommendations for lubricant application methods and quantities. Periodically inspect the bearing for signs of wear, such as pitting, spalling, or increased clearance. If the bearing shows signs of significant wear, it should be replaced promptly to prevent further damage to the equipment. Use a micrometer or other precision measurement tools to accurately assess the bearing's condition.\u003c\/p\u003e\n\u003cp\u003e• By following these guidelines, you can ensure the optimal performance and longevity of our Silicon Nitride Ceramic Bearings High TEMP Resistance 1200℃ Insulation With Cage in your applications. If you have any questions or need further technical assistance, please do not hesitate to contact our customer support 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Zirconia Ceramic High Speed Precision Angular Contact Spindle Ball Bearings","description":"\u003ch2\u003e1. Product core introduction\u003c\/h2\u003eZrO2 Zirconia Ceramic High Speed Precision Angular Contact Spindle Ball Bearings represent the pinnacle of bearing technology, designed to meet the most demanding requirements of modern high-performance machinery. These bearings are engineered with a unique combination of zirconia ceramic material and precision manufacturing techniques, making them a top choice for applications where speed, precision, and reliability are of utmost importance. Whether it's in the aerospace industry, driving the spindles of advanced machine tools, or enabling the high-speed rotation in cutting-edge electronics manufacturing, our bearings offer unmatched performance and durability. They are the key component in achieving the highest levels of productivity and quality in your operations, ensuring smooth and accurate motion even under the most extreme conditions.\u003cbr\u003e\u003ch2\u003e2. The main characteristics of the product\u003c\/h2\u003e        •     ZrO2 Zirconia Ceramic Material\nThe use of zirconia ceramic in our bearings provides several outstanding properties. It offers exceptional hardness, which significantly reduces the risk of wear and deformation, even under heavy loads and high speeds. The ceramic material also exhibits excellent corrosion resistance, making it suitable for use in harsh environments where traditional metal bearings may fail. Additionally, zirconia ceramic has a low density, contributing to a reduction in the overall weight of the bearing and the rotating system, which is beneficial for applications where weight is a critical factor, such as in aerospace.\n        •     High-Speed Capability\nThese bearings are specifically designed to operate at extremely high speeds. The combination of the ceramic material's thermal stability and the precision-engineered ball and raceway geometry allows for efficient heat dissipation and minimal friction. This enables the bearings to maintain their performance and integrity even during prolonged high-speed operation, reducing the risk of overheating and premature failure. The high-speed capabilities of our bearings make them ideal for applications such as high-speed spindles in machine tools and turbine engines.\n        •     Precision Angular Contact Design\nThe angular contact design of the bearings allows them to handle both axial and radial loads with great precision. This design ensures that the loads are evenly distributed across the balls and raceways, minimizing stress concentrations and maximizing the bearing's load-carrying capacity. The precise angular contact also contributes to the overall stability and accuracy of the rotating system, making these bearings essential for applications that require tight tolerances and precise motion control, such as in precision machining and optical equipment.\n        •     Low Friction and Smooth Operation\nThanks to the high-quality ceramic material and the precision manufacturing process, our bearings operate with extremely low friction. This not only reduces power consumption but also results in smooth and quiet operation. The low friction characteristics also contribute to a longer service life by minimizing wear on the bearing components. In applications where vibration and noise reduction are crucial, such as in electronics manufacturing and high-precision instruments        •     Enhanced Thermal Stability\nZirconia ceramic has excellent thermal stability, which means that the bearing's performance remains consistent even in the presence of significant temperature changes. This is essential for applications where the operating conditions involve rapid heating and cooling, such as in high-speed machining processes. The thermal stability of our bearings helps to maintain the dimensional accuracy of the components and ensures reliable operation over a wide range of temperatures.\u003cbr\u003e\u003ch2\u003e3. Product use scene\u003c\/h2\u003e        •     Aerospace Industry\nIn aircraft engines and auxiliary power units, the ZrO2 Zirconia Ceramic High Speed Precision Angular Contact Spindle Ball Bearings are used to support the high-speed rotating shafts. The lightweight and high-strength properties of the ceramic bearings are crucial for reducing the overall weight of the engine, improving fuel efficiency, and enhancing performance. The bearings' ability to operate reliably at high speeds and in harsh environments, including exposure to high temperatures and corrosive substances, is essential for the safety and efficiency of aerospace applications.\n        •     Machine Tool Industry\nFor high-speed machining centers and precision lathes, these bearings are used in the spindles to enable precise and rapid rotation of the cutting tools. The high precision and load-carrying capacity of the bearings ensure accurate machining of complex parts with tight tolerances. The low friction and thermal stability characteristics contribute to the overall efficiency and productivity of the machine tool, reducing machining errors and improving surface finish quality.\n        •     Electronics Manufacturing\nIn semiconductor fabrication equipment and high-speed hard disk drives, the bearings are used to support the rotation of spindles and other critical components. The smooth operation and low vibration of the ceramic bearings are essential for ensuring the precise alignment and movement of delicate electronic components. The corrosion resistance and high-speed capabilities of the bearings are also important for maintaining the reliability and performance of the electronics manufacturing process.\n        •     Optical and Precision Instruments\nIn telescopes, microscopes, and other precision optical instruments, the angular contact spindle ball bearings are used to provide accurate and stable rotation. The precision design and low friction of the bearings ensure that the optical components can be precisely adjusted and positioned, enabling clear and accurate imaging. The durability and resistance to wear of the ceramic bearings are crucial for the long-term reliability of these instruments, which are often used in demanding scientific and industrial applications.\u003cbr\u003e\u003ch2\u003e4. Product use instructions\u003c\/h2\u003e1、Installation\nBefore installation, ensure that the work area is clean and free from any debris or contaminants. Use clean, lint-free gloves to handle the bearing to prevent fingerprints and other residues from affecting its performance.\nInspect the bearing for any signs of damage or defects, such as scratches, dents, or irregularities on the raceways or balls. If any issues are detected, do not install the bearing and contact the supplier for a replacement.\nWhen installing the bearing onto the shaft, use a gentle and even pressure to ensure proper seating. Avoid using excessive force, as this could cause damage to the bearing or the shaft. If necessary, use a suitable installation tool, such as a press fit sleeve or a bearing installer, to ensure accurate and damage-free installation.\nEnsure that the bearing is properly aligned with the shaft and the housing. Any misalignment can lead to increased wear and reduced bearing life. Use alignment tools or precision jigs to achieve the correct alignment, especially in applications where precision is critical.\n2、Operation\nStart the equipment gradually and allow the bearing to warm up to its operating temperature. Avoid sudden starts and stops, as this can cause excessive stress on the bearing and lead to premature failure.\nMonitor the operating temperature, vibration, and noise levels of the bearing during operation. Any significant changes in these parameters could indicate a problem, such as insufficient lubrication, misalignment, or overloading. If detected, take immediate action to address the issue and prevent further damage.\nEnsure that the equipment is operating within the specified load and speed limits of the bearing. Exceeding these limits can significantly reduce the bearing's lifespan and may result in catastrophic failure. Refer to the product documentation or consult the supplier for the recommended operating parameters.\n3、Maintenance\nRegularly clean the bearing and its surrounding area to remove any dirt, dust, or other contaminants that could accumulate during operation. Use a suitable cleaning solvent and a soft brush or cloth to gently wipe the bearing surfaces. Avoid using harsh chemicals or abrasive materials that could damage the bearing.\nCheck the lubrication level and quality of the bearing regularly. The frequency of lubrication depends on the operating conditions and the type of lubricant used. Use a high-quality lubricant that is suitable for the application and the operating environment. Follow the manufacturer's recommendations for lubricant application methods and quantities.\nPeriodically inspect the bearing for signs of wear, such as pitting, spalling, or increased clearance. If the bearing shows signs of significant wear, it should be replaced promptly to prevent further damage to the equipment. Use a micrometer or other precision measurement tools to accurately assess the bearing's condition.\n        •     By following these guidelines, you can ensure the optimal performance and longevity of our ZrO2 Zirconia Ceramic High Speed Precision Angular Contact Spindle Ball Bearings in your applications. If you have any questions or need further technical assistance, please do not hesitate to contact our customer support team.","brand":"HomeDIYer","offers":[{"title":"7200-10mm-30mm-9mm \/ Zirconium Oxide","offer_id":50762369270034,"sku":"GLBZSJ057012","price":13.33,"currency_code":"USD","in_stock":true},{"title":"7201-12mm-32mm-10mm \/ Zirconium Oxide","offer_id":50762369302802,"sku":"GLBZSJ057013","price":14.74,"currency_code":"USD","in_stock":true},{"title":"7202-15mm-35mm-11mm \/ Zirconium Oxide","offer_id":50762369335570,"sku":"GLBZSJ057014","price":16.5,"currency_code":"USD","in_stock":true},{"title":"7203-17mm-40mm-12mm \/ Zirconium Oxide","offer_id":50762369368338,"sku":"GLBZSJ057015","price":18.87,"currency_code":"USD","in_stock":true},{"title":"7204-20mm-47mm-14mm \/ Zirconium Oxide","offer_id":50762369401106,"sku":"GLBZSJ057016","price":22.7,"currency_code":"USD","in_stock":true},{"title":"7205-25mm-52mm-15mm \/ Zirconium Oxide","offer_id":50762369433874,"sku":"GLBZSJ057017","price":24.55,"currency_code":"USD","in_stock":true},{"title":"7206-30mm-62mm-16mm \/ Zirconium Oxide","offer_id":50762369466642,"sku":"GLBZSJ057018","price":44.59,"currency_code":"USD","in_stock":true},{"title":"7207-35mm-72mm-17mm \/ Zirconium Oxide","offer_id":50762369499410,"sku":"GLBZSJ057019","price":80.19,"currency_code":"USD","in_stock":true},{"title":"7208-40mm-80mm-18mm \/ Zirconium Oxide","offer_id":50762369532178,"sku":"GLBZSJ057020","price":106.77,"currency_code":"USD","in_stock":true},{"title":"7000-10mm-26mm-8mm \/ Zirconium Oxide","offer_id":50762369564946,"sku":"GLBZSJ057021","price":10.58,"currency_code":"USD","in_stock":true},{"title":"7001-12mm-28mm-8mm \/ Zirconium Oxide","offer_id":50762369597714,"sku":"GLBZSJ057022","price":12.29,"currency_code":"USD","in_stock":true},{"title":"7002-15mm-32mm-9mm \/ Zirconium Oxide","offer_id":50762369630482,"sku":"GLBZSJ057023","price":13.2,"currency_code":"USD","in_stock":true},{"title":"7003-17mm-35mm-10mm \/ Zirconium Oxide","offer_id":50762369663250,"sku":"GLBZSJ057024","price":14.45,"currency_code":"USD","in_stock":true},{"title":"7004-20mm-42mm-12mm \/ Zirconium Oxide","offer_id":50762369696018,"sku":"GLBZSJ057025","price":17.74,"currency_code":"USD","in_stock":true},{"title":"7005-25mm-47mm-12mm \/ Zirconium Oxide","offer_id":50762369728786,"sku":"GLBZSJ057026","price":19.61,"currency_code":"USD","in_stock":true},{"title":"7006-30mm-55mm-13mm \/ Zirconium Oxide","offer_id":50762369761554,"sku":"GLBZSJ057027","price":30.63,"currency_code":"USD","in_stock":true},{"title":"7007-35mm-62mm-14mm \/ Zirconium Oxide","offer_id":50762369794322,"sku":"GLBZSJ057028","price":57.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/01_d9d5e577-ab09-4a55-a3aa-d9fd9f551313.jpg?v=1762198927"},{"product_id":"deep-groove-ball-bearings","title":"Deep Groove Ball Bearings","description":"\u003ch2\u003e1. Product core introduction\u003c\/h2\u003eDeep Groove Ball Bearings are the workhorses of the bearing industry, renowned for their versatility and reliability. These bearings form the foundation of countless mechanical systems, providing essential support for rotating shafts and enabling smooth and efficient operation. At the heart of our offering is a commitment to quality and performance, with each bearing meticulously engineered to meet the diverse needs of modern applications. Whether it's in the automotive sector, powering the wheels and drivetrain components, or in industrial machinery, facilitating the movement of conveyor belts and production equipment, our Deep Groove Ball Bearings are designed to deliver consistent and dependable performance, reducing friction, minimizing wear, and maximizing the lifespan of your machinery.\u003cbr\u003e\u003ch2\u003e2. The main characteristics of the product\u003c\/h2\u003e        •     Versatile Load Handling\nOur Deep Groove Ball Bearings are engineered to handle both radial and axial loads with remarkable efficiency. The deep groove design allows the balls to distribute the load evenly, providing excellent load-carrying capacity. This versatility makes them suitable for a wide range of applications, from light-duty consumer products to heavy-duty industrial machinery. Whether it's the rotational forces in a household fan or the significant loads in a manufacturing press, these bearings can handle the task with ease.\n        •     Precision Engineering for Smooth Operation\nManufactured with the highest level of precision, our bearings exhibit tight tolerances and excellent dimensional accuracy. The balls and raceways are carefully machined to ensure minimal friction and vibration during operation. This precision not only results in smooth and quiet rotation but also enhances the overall efficiency and accuracy of the equipment in which the bearings are used. In applications where precision is critical, such as in machine tools and precision instruments, our bearings provide the reliable and precise performance needed.\n        •     High-Speed Capability\nDesigned to operate at high speeds, these bearings are suitable for applications where rapid rotation is required. The optimized design of the balls and raceways, along with the use of high-quality materials, allows for efficient heat dissipation and reduced centrifugal forces at high speeds. This ensures stable operation and minimizes the risk of overheating or premature failure, making them ideal for use in motors, turbines, and other high-speed machinery.\n        •     Durable Construction and Materials\nWe use only the finest quality materials in the production of our Deep Groove Ball Bearings. The bearing rings and balls are made from high-strength alloy steel, which is heat-treated to enhance hardness and durability. The seals and cages are also carefully designed and fabricated to ensure a tight fit and reliable operation. The overall construction of the bearing is built to withstand the rigors of continuous use, including heavy loads, high speeds, and exposure to various environmental conditions.\n        •     Easy Installation and Maintenance\nThe standardized design of our bearings makes them easy to install and replace, reducing downtime and maintenance costs. They are available in a variety of sizes and configurations to fit different applications, and the simple installation process can be carried out with basic tools. Additionally, routine maintenance is straightforward, with easy access to lubrication points and simple inspection procedures to ensure the bearings are operating at peak performance.\u003cbr\u003e\u003ch2\u003e3. Product use scene\u003c\/h2\u003e        •     Automotive Industry\nIn automobiles, Deep Groove Ball Bearings are used in a multitude of applications. They support the rotation of the wheels, allowing for smooth and efficient movement. In the engine, they are found in components such as the crankshaft, camshaft, and alternator, ensuring reliable operation and power generation. The versatility and durability of these bearings are essential for withstanding the harsh conditions and high loads experienced in automotive applications.\n        •     Industrial Machinery\nFor industrial equipment like conveyor systems, pumps, and compressors, these bearings provide the necessary support for the rotating shafts. The ability to handle both radial and axial loads, along with their high-speed capabilities, makes them ideal for these applications. In manufacturing plants, they are used in machine tools, textile machinery, and printing presses, contributing to the precise and efficient production of goods.\n        •     Electrical Appliances\nIn household and commercial electrical appliances, such as fans, washing machines, and power tools, Deep Groove Ball Bearings enable smooth and quiet operation. The precision engineering and low friction characteristics of these bearings are crucial for reducing energy consumption and noise levels. They also ensure the long-term reliability of the appliances, minimizing the need for repairs and replacements.\n        •     Aerospace and Defense\nIn aerospace applications, these bearings are used in aircraft engines, landing gear systems, and flight control mechanisms. The high-quality construction and performance characteristics of our bearings are essential for ensuring the safety and reliability of these critical systems. In defense equipment, such as missiles and military vehicles, they provide the necessary support and precision for various moving parts, operating under extreme conditions.\u003cbr\u003e\u003ch2\u003e4. Product use instructions\u003c\/h2\u003e1、Installation\nBefore installation, clean the bearing housing and shaft thoroughly to remove any dirt, debris, or rust. Inspect the bearing for any signs of damage or defects, such as scratches, dents, or irregularities on the raceways or balls. If any issues are detected, do not install the bearing and contact the supplier for a replacement.\nApply a suitable lubricant to the bearing surfaces, following the manufacturer's recommendations for lubricant type and quantity. The lubricant should be evenly distributed to ensure proper operation and reduce friction.\nWhen installing the bearing onto the shaft, use a gentle and even pressure to ensure proper seating. Avoid using excessive force, as this could cause damage to the bearing or the shaft. If necessary, use a suitable installation tool, such as a press fit sleeve or a bearing installer, to ensure accurate and damage-free installation.\nEnsure that the bearing is properly aligned with the shaft and the housing. Any misalignment can lead to increased wear and reduced bearing life. Use alignment tools or precision jigs to achieve the correct alignment, especially in applications where precision is critical.\n2、Operation\nStart the equipment gradually and allow the bearing to warm up to its operating temperature. Avoid sudden starts and stops, as this can cause excessive stress on the bearing and lead to premature failure.\nMonitor the operating temperature, vibration, and noise levels of the bearing during operation. Any significant changes in these parameters could indicate a problem, such as insufficient lubrication, misalignment, or overloading. If detected, take immediate action to address the issue and prevent further damage.\nEnsure that the equipment is operating within the specified load and speed limits of the bearing. Exceeding these limits can significantly reduce the bearing's lifespan and may result in catastrophic failure. Refer to the product documentation or consult the supplier for the recommended operating parameters.\n3、Maintenance\nRegularly clean the bearing and its surrounding area to remove any dirt, dust, or other contaminants that could accumulate during operation. Use a suitable cleaning solvent and a soft brush or cloth to gently wipe the bearing surfaces. Avoid using harsh chemicals or abrasive materials that could damage the bearing.\nCheck the lubrication level and quality of the bearing regularly. The frequency of lubrication depends on the operating conditions and the type of lubricant used. Use a high-quality lubricant that is suitable for the application and the operating environment. Follow the manufacturer's recommendations for lubricant application methods and quantities.\nPeriodically inspect the bearing for signs of wear, such as pitting, spalling, or increased clearance. If the bearing shows signs of significant wear, it should be replaced promptly to prevent further damage to the equipment. Use a micrometer or other precision measurement tools to accurately assess the bearing's condition.\n        •     By following these guidelines, you can ensure the optimal performance and longevity of our Deep Groove Ball Bearings in your applications. If you have any questions or need further technical assistance, please do not hesitate to contact our customer support team.","brand":"HomeDIYer","offers":[{"title":"6008ZZ-40mm-68mm-15mm \/ Bearing Steel \/ 1pcs","offer_id":50762369859858,"sku":"GLBZSJ073771","price":10.12,"currency_code":"USD","in_stock":true},{"title":"6008ZZ-40mm-68mm-15mm \/ Bearing Steel \/ 5pcs","offer_id":50762369990930,"sku":"GLBZSJ073771x5","price":47.7,"currency_code":"USD","in_stock":true},{"title":"6009ZZ-45mm-75mm-16mm \/ Bearing Steel \/ 1pcs","offer_id":50762369892626,"sku":"GLBZSJ073773","price":12.66,"currency_code":"USD","in_stock":true},{"title":"6009ZZ-45mm-75mm-16mm \/ Bearing Steel \/ 5pcs","offer_id":50762370023698,"sku":"GLBZSJ073773x5","price":60.4,"currency_code":"USD","in_stock":true},{"title":"6200ZZ-10mm-30mm-9mm \/ Bearing Steel \/ 1pcs","offer_id":50762369925394,"sku":"GLBZSJ073740","price":2.38,"currency_code":"USD","in_stock":true},{"title":"6200ZZ-10mm-30mm-9mm \/ Bearing Steel \/ 5pcs","offer_id":50762370056466,"sku":"GLBZSJ073740x5","price":8.97,"currency_code":"USD","in_stock":true},{"title":"6201ZZ-12mm-32mm-10mm \/ Bearing Steel \/ 1pcs","offer_id":50762369958162,"sku":"GLBZSJ073754","price":2.65,"currency_code":"USD","in_stock":true},{"title":"6201ZZ-12mm-32mm-10mm \/ Bearing Steel \/ 5pcs","offer_id":50762370089234,"sku":"GLBZSJ073754x5","price":10.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/02_35c8761a-455d-493f-aa65-4df431908da3.jpg?v=1762198929"},{"product_id":"metal-shielded-deep-groove-flanged-ball-bearing","title":"Metal Shielded Deep Groove Flanged Ball Bearing","description":"\u003ch2\u003e1. Product core introduction\u003c\/h2\u003eMetal Shielded Deep Groove Flanged Ball Bearing is a pinnacle of engineering precision and durability, designed to meet the exacting demands of a wide range of industrial applications. This bearing combines the robustness of a flanged design with the reliable performance of a deep groove ball bearing, all while being protected by a high-quality metal shield. It serves as a critical component in machinery across various sectors, providing stable and efficient rotational support. Whether it's in the heart of a manufacturing plant, powering heavy-duty equipment, or ensuring the smooth operation of automotive systems, our bearing is engineered to deliver outstanding performance, reduce maintenance requirements, and enhance the overall productivity and reliability of your operations.\u003cbr\u003e\u003ch2\u003e2. The main characteristics of the product\u003c\/h2\u003e        •     Robust Metal Shielding\nThe metal shield integrated into the bearing is a key feature that offers exceptional protection against dust, dirt, and other contaminants. This shielding effectively seals the internal components, preventing the ingress of foreign particles that could otherwise cause damage to the balls, raceways, and other critical parts. By maintaining a clean operating environment, the metal shield significantly extends the bearing's lifespan and ensures consistent performance over time. This is especially valuable in industrial settings where machinery is often exposed to harsh and dirty conditions, such as in mining, construction, and metalworking.\n        •     Flanged Design for Enhanced Load Capacity\nThe flanged outer ring of the bearing provides additional support and stability, enabling it to handle heavier axial and radial loads. This design feature makes it suitable for applications where high forces are exerted on the rotating shaft. The flange also simplifies the installation process, allowing for easy alignment and secure mounting. Whether it's supporting the spindle of a large machine tool or the shaft of a heavy-duty conveyor, the flanged design ensures reliable and efficient operation under demanding conditions.\n        •     Deep Groove Ball Bearing Technology\nThe deep groove geometry of the ball bearing is optimized to distribute loads evenly and efficiently. This allows the balls to roll smoothly within the raceways, minimizing friction and wear. The deep grooves also enable the bearing to handle both radial and axial loads simultaneously, providing versatility in various operating scenarios. The precision machining of the balls and raceways ensures a high level of rotational accuracy and smooth operation, making these bearings ideal for applications that require precise motion control and minimal vibration.\n        •     High-Quality Materials and Construction\nManufactured from top-grade alloy steel, our bearings exhibit excellent mechanical properties. The bearing rings and balls are heat-treated to enhance their hardness and strength, ensuring durability and resistance to fatigue. The seals and shields are carefully designed and fabricated to provide a tight fit and reliable protection. The overall construction of the bearing is built to withstand the rigors of industrial use, including heavy loads, high speeds, and temperature fluctuations.\n        •     Smooth and Quiet Operation\nThanks to the precision manufacturing and optimized design, our Metal Shielded Deep Groove Flanged Ball Bearings operate with minimal noise and vibration. This smooth operation is not only beneficial for the performance of the machinery but also contributes to a more comfortable and productive working environment. In applications where noise reduction is crucial, such as in HVAC systems, office equipment, and precision instruments, our bearings offer a distinct advantage.\u003cbr\u003e\u003ch2\u003e3. Product use scene\u003c\/h2\u003e        •     Industrial Machinery\nIn manufacturing equipment such as lathes, milling machines, and grinding machines, the bearings are used to support the spindles and rotating shafts. The high precision and load-carrying capacity of the bearings ensure accurate machining and reliable operation. In industrial pumps and compressors, the flanged design provides the necessary support for the rotating components, while the metal shielding protects against the ingress of contaminants present in the fluid or gas being pumped or compressed.\n        •     Automotive Applications\nIn automotive engines, the bearings are used in the crankshaft, camshaft, and other rotating parts. The ability to handle high loads and the durability of the bearings are essential for the reliable operation of the engine. In automotive transmissions and axles, the flanged design offers the required stability and load support for the shafts. The metal shielding helps protect the bearings from the contaminants present in the harsh operating environment of the vehicle, ensuring a long service life.\n        •     Power Generation\nIn generators and turbines, the bearings are critical for the smooth rotation of the rotor. The high load-carrying capacity and reliability of our bearings are essential for the efficient generation of power. Whether it's a hydroelectric turbine, a wind turbine, or a thermal power plant generator, the Metal Shielded Deep Groove Flanged Ball Bearings ensure stable operation and minimal maintenance requirements. The metal shielding protects the bearings from the moisture, dust, and other contaminants present in power generation facilities.\n        •     Heavy-Duty Equipment\nIn construction machinery such as cranes, excavators, and bulldozers, the bearings are used in various rotating joints and shafts. The robust construction and high load capacity of the bearings enable them to withstand the extreme forces and vibrations encountered in these applications. The metal shielding protects against the dirt and debris present on construction sites, ensuring reliable performance and reducing downtime.\u003cbr\u003e\u003ch2\u003e4. Product use instructions\u003c\/h2\u003e1、Installation\nBefore installation, thoroughly clean the bearing housing and shaft to remove any dirt, debris, or rust. Inspect the bearing for any signs of damage or defects, such as scratches, dents, or irregularities on the raceways or balls. If any issues are detected, do not install the bearing and contact the supplier for a replacement.\nApply a suitable lubricant to the bearing surfaces, following the manufacturer's recommendations for lubricant type and quantity. The lubricant should be evenly distributed to ensure proper operation and reduce friction.\nWhen installing the bearing onto the shaft, use a gentle and even pressure to ensure proper seating. Avoid using excessive force, as this could cause damage to the bearing or the shaft. If necessary, use a suitable installation tool, such as a press fit sleeve or a bearing installer, to ensure accurate and damage-free installation.\nEnsure that the bearing is properly aligned with the shaft and the housing. Any misalignment can lead to increased wear and reduced bearing life. Use alignment tools or precision jigs to achieve the correct alignment, especially in applications where precision is critical.\n2、Operation\nStart the equipment gradually and allow the bearing to warm up to its operating temperature. Avoid sudden starts and stops, as this can cause excessive stress on the bearing and lead to premature failure.\nMonitor the operating temperature, vibration, and noise levels of the bearing during operation. Any significant changes in these parameters could indicate a problem, such as insufficient lubrication, misalignment, or overloading. If detected, take immediate action to address the issue and prevent further damage.\nEnsure that the equipment is operating within the specified load and speed limits of the bearing. Exceeding these limits can significantly reduce the bearing's lifespan and may result in catastrophic failure. Refer to the product documentation or consult the supplier for the recommended operating parameters.\n3、Maintenance\nRegularly clean the bearing and its surrounding area to remove any dirt, dust, or other contaminants that could accumulate during operation. Use a suitable cleaning solvent and a soft brush or cloth to gently wipe the bearing surfaces. Avoid using harsh chemicals or abrasive materials that could damage the bearing.\nCheck the lubrication level and quality of the bearing regularly. The frequency of lubrication depends on the operating conditions and the type of lubricant used. Use a high-quality lubricant that is suitable for the application and the operating environment. Follow the manufacturer's recommendations for lubricant application methods and quantities.\nPeriodically inspect the bearing for signs of wear, such as pitting, spalling, or increased clearance. If the bearing shows signs of significant wear, it should be replaced promptly to prevent further damage to the equipment. Use a micrometer or other precision measurement tools to accurately assess the bearing's condition.\n        •     By following these guidelines, you can ensure the optimal performance and longevity of our Metal Shielded Deep Groove Flanged Ball Bearing in your applications. If you have any questions or need further technical assistance, please do not hesitate to contact our customer support team.","brand":"HomeDIYer","offers":[{"title":"F604-4mm-12mm-4mm \/ Bearing Steel \/ 1Pcs","offer_id":50762370646290,"sku":"GLBZSJ073804","price":1.51,"currency_code":"USD","in_stock":true},{"title":"F604-4mm-12mm-4mm \/ Bearing Steel \/ 5Pcs","offer_id":50762371760402,"sku":"GLBZSJ073804","price":4.58,"currency_code":"USD","in_stock":true},{"title":"F605-5mm-14mm-5mm \/ Bearing Steel \/ 1Pcs","offer_id":50762370679058,"sku":"GLBZSJ073800","price":1.56,"currency_code":"USD","in_stock":true},{"title":"F605-5mm-14mm-5mm \/ Bearing Steel \/ 5Pcs","offer_id":50762371793170,"sku":"GLBZSJ073800","price":4.84,"currency_code":"USD","in_stock":true},{"title":"F606-6mm-17mm-6mm \/ Bearing Steel \/ 1Pcs","offer_id":50762370711826,"sku":"GLBZSJ073801","price":1.7,"currency_code":"USD","in_stock":true},{"title":"F606-6mm-17mm-6mm \/ Bearing Steel \/ 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5Pcs","offer_id":50762372808978,"sku":"GLBZSJ073784","price":5.73,"currency_code":"USD","in_stock":true},{"title":"F699-9mm-20mm-6mm \/ Bearing Steel \/ 1Pcs","offer_id":50762371727634,"sku":"GLBZSJ073799","price":1.8,"currency_code":"USD","in_stock":true},{"title":"F699-9mm-20mm-6mm \/ Bearing Steel \/ 5Pcs","offer_id":50762372841746,"sku":"GLBZSJ073799","price":6.08,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/03_ca11e19a-f449-4202-9200-0a15ddea31ee.jpg?v=1762198930"},{"product_id":"metal-shielded-flanged-deep-groove-ball-bearing","title":"Metal Shielded Flanged Deep Groove Ball Bearing","description":"\u003ch2\u003e1. Product core introduction\u003c\/h2\u003eMetal Shielded Flanged Deep Groove Ball Bearing is a top-tier solution engineered to meet the exacting demands of industrial applications. Combining innovative design with high-quality materials, these bearings offer reliable and efficient performance in a wide range of machinery and equipment. The flanged design provides enhanced stability and load-bearing capabilities, while the metal shielding offers excellent protection against contaminants, ensuring smooth and uninterrupted operation. Whether it's in the heart of a manufacturing plant, powering a conveyor system, or driving a precision motor, our bearings are built to last and deliver optimal results, reducing downtime and maintenance costs.\u003cbr\u003e\u003ch2\u003e2. The main characteristics of the product\u003c\/h2\u003e        •     Effective Metal Shielding\nThe metal shield incorporated into the bearing acts as a formidable barrier against dust, dirt, and other particulate matter. This shielding not only safeguards the internal components, such as the balls and raceways, but also prevents the ingress of moisture and corrosive substances. By maintaining a clean operating environment within the bearing, the metal shield significantly extends the bearing's lifespan and ensures consistent performance over time. This feature is especially crucial in industries where machinery is exposed to harsh and dirty conditions, such as mining, construction, and heavy manufacturing.\n        •     Flanged Design for Superior Load Support\nThe flanged outer ring of the bearing provides additional axial and radial load-carrying capacity. This design feature allows the bearing to handle heavier loads and moments, making it suitable for applications where high forces are involved. The flange also simplifies the installation process by providing a convenient surface for mounting and alignment. Whether it's supporting the shaft of a large industrial pump or the spindle of a heavy-duty machine tool, the flanged design ensures reliable and stable operation.\n        •     Deep Groove Ball Bearing Technology\nThe deep groove geometry of the ball bearing is optimized for efficient load distribution. This design allows the balls to roll smoothly within the raceways, minimizing friction and wear. The deep grooves also enable the bearing to handle both radial and axial loads simultaneously, providing versatility in various operating conditions. The precision machining of the balls and raceways ensures a high level of rotational accuracy and smooth operation, making these bearings ideal for applications that require precise motion control and low vibration.\n        •     High-Quality Materials and Construction\nManufactured from premium-grade materials, our bearings exhibit excellent mechanical properties. The bearing rings and balls are made from high-strength alloy steel, which is heat-treated to enhance hardness and durability. The seals and shields are carefully designed and fabricated to ensure a tight fit and reliable protection. The overall construction of the bearing is built to withstand the rigors of industrial use, including heavy loads, high speeds, and temperature fluctuations.\n        •     Smooth and Quiet Operation\nThanks to the precision manufacturing and optimized design, our Metal Shielded Flanged Deep Groove Ball Bearings operate with minimal noise and vibration. This smooth operation is not only beneficial for the performance of the machinery but also contributes to a more comfortable and productive working environment. In applications where noise reduction is critical, such as in HVAC systems, office equipment, and precision instruments, our bearings offer a distinct advantage.\u003cbr\u003e\u003ch2\u003e3. Product use scene\u003c\/h2\u003e        •     Industrial Manufacturing\nIn machine tools such as lathes, milling machines, and grinders, the bearings are used to support the spindles and rotating shafts. The high precision and load-carrying capacity of the bearings ensure accurate machining and reliable operation. In manufacturing processes that involve conveyor belts, the flanged bearings are used to support the rollers, enabling smooth and efficient material transfer. The metal shielding protects the bearings from the dust and debris generated during the manufacturing process, reducing maintenance requirements and downtime.\n        •     Automotive Industry\nIn automotive engines, the bearings are used in the crankshaft, camshaft, and other rotating components. The ability to handle high loads and the durability of the bearings are essential for the reliable operation of the engine. In automotive transmissions and axles, the flanged design provides the necessary support and stability for the rotating shafts. The metal shielding helps protect the bearings from the contaminants present in the harsh operating environment of the vehicle, ensuring a long service life.\n        •     Power Generation\nIn generators and turbines, the bearings are critical for the smooth rotation of the rotor. The high load-carrying capacity and reliability of our bearings are essential for the efficient generation of power. Whether it's a hydroelectric turbine, a wind turbine, or a thermal power plant generator, the Metal Shielded Flanged Deep Groove Ball Bearings ensure stable operation and minimal maintenance requirements. The metal shielding protects the bearings from the moisture, dust, and other contaminants present in power generation facilities.\n        •     HVAC Systems\nIn fans and blowers used in heating, ventilation, and air conditioning systems, the bearings enable smooth and quiet operation. The low vibration and noise characteristics of our bearings are crucial for maintaining a comfortable indoor environment. The metal shielding protects the bearings from the dust and debris that can accumulate in HVAC systems, ensuring reliable performance and a long service life.\u003cbr\u003e\u003ch2\u003e4. Product use instructions\u003c\/h2\u003e1、Installation\nBefore installation, thoroughly clean the bearing housing and shaft to remove any dirt, debris, or rust. Inspect the bearing for any signs of damage or defects, such as scratches, dents, or irregularities on the raceways or balls. If any issues are detected, do not install the bearing and contact the supplier for a replacement.\nApply a suitable lubricant to the bearing surfaces, following the manufacturer's recommendations for lubricant type and quantity. The lubricant should be evenly distributed to ensure proper operation and reduce friction.\nWhen installing the bearing onto the shaft, use a gentle and even pressure to ensure proper seating. Avoid using excessive force, as this could cause damage to the bearing or the shaft. If necessary, use a suitable installation tool, such as a press fit sleeve or a bearing installer, to ensure accurate and damage-free installation.\nEnsure that the bearing is properly aligned with the shaft and the housing. Any misalignment can lead to increased wear and reduced bearing life. Use alignment tools or precision jigs to achieve the correct alignment, especially in applications where precision is critical.\n2、Operation\nStart the equipment gradually and allow the bearing to warm up to its operating temperature. Avoid sudden starts and stops, as this can cause excessive stress on the bearing and lead to premature failure.\nMonitor the operating temperature, vibration, and noise levels of the bearing during operation. Any significant changes in these parameters could indicate a problem, such as insufficient lubrication, misalignment, or overloading. If detected, take immediate action to address the issue and prevent further damage.\nEnsure that the equipment is operating within the specified load and speed limits of the bearing. Exceeding these limits can significantly reduce the bearing's lifespan and may result in catastrophic failure. Refer to the product documentation or consult the supplier for the recommended operating parameters.\n3、Maintenance\nRegularly clean the bearing and its surrounding area to remove any dirt, dust, or other contaminants that could accumulate during operation. Use a suitable cleaning solvent and a soft brush or cloth to gently wipe the bearing surfaces. Avoid using harsh chemicals or abrasive materials that could damage the bearing.\nCheck the lubrication level and quality of the bearing regularly. The frequency of lubrication depends on the operating conditions and the type of lubricant used. Use a high-quality lubricant that is suitable for the application and the operating environment. Follow the manufacturer's recommendations for lubricant application methods and quantities.\nPeriodically inspect the bearing for signs of wear, such as pitting, spalling, or increased clearance. If the bearing shows signs of significant wear, it should be replaced promptly to prevent further damage to the equipment. Use a micrometer or other precision measurement tools to accurately assess the bearing's condition.\n        •     By following these guidelines, you can ensure the optimal performance and longevity of our Metal Shielded Flanged Deep Groove Ball Bearing in your applications. If you have any questions or need further technical assistance, please do not hesitate to contact our customer support team.","brand":"HomeDIYer","offers":[{"title":"F6000-10mm-26mm-8mm \/ Bearing Steel \/ 1Pcs","offer_id":50762372874514,"sku":"GLBZSJ073815","price":2.45,"currency_code":"USD","in_stock":true},{"title":"F6001-12mm-28mm-8mm \/ Bearing Steel \/ 1Pcs","offer_id":50762372907282,"sku":"GLBZSJ073816","price":2.7,"currency_code":"USD","in_stock":true},{"title":"F6002-15mm-32mm-9mm \/ Bearing Steel \/ 1Pcs","offer_id":50762372940050,"sku":"GLBZSJ073819","price":3.22,"currency_code":"USD","in_stock":true},{"title":"F6003-17mm-35mm-10mm \/ Bearing Steel \/ 1Pcs","offer_id":50762372972818,"sku":"GLBZSJ073820","price":3.67,"currency_code":"USD","in_stock":true},{"title":"F6004-20mm-42mm-12mm \/ Bearing Steel \/ 1Pcs","offer_id":50762373005586,"sku":"GLBZSJ073824","price":5.24,"currency_code":"USD","in_stock":true},{"title":"F6005-25mm-47mm-12mm \/ Bearing Steel \/ 1Pcs","offer_id":50762373038354,"sku":"GLBZSJ073826","price":6.01,"currency_code":"USD","in_stock":true},{"title":"F6700-10mm-15mm-4mm \/ Bearing Steel \/ 1Pcs","offer_id":50762373071122,"sku":"GLBZSJ073809","price":1.52,"currency_code":"USD","in_stock":true},{"title":"F6800-10mm-19mm-5mm \/ Bearing Steel \/ 1Pcs","offer_id":50762373103890,"sku":"GLBZSJ073808","price":1.69,"currency_code":"USD","in_stock":true},{"title":"F6801-12mm-21mm-5mm \/ Bearing Steel \/ 1Pcs","offer_id":50762373136658,"sku":"GLBZSJ073812","price":1.92,"currency_code":"USD","in_stock":true},{"title":"F6803-17mm-26mm-5mm \/ Bearing Steel \/ 1Pcs","offer_id":50762373169426,"sku":"GLBZSJ073818","price":2.27,"currency_code":"USD","in_stock":true},{"title":"F6804-20mm-32mm-7mm \/ Bearing Steel \/ 1Pcs","offer_id":50762373202194,"sku":"GLBZSJ073821","price":2.94,"currency_code":"USD","in_stock":true},{"title":"F6805-25mn-37mm-7mm \/ Bearing Steel \/ 1Pcs","offer_id":50762373234962,"sku":"GLBZSJ073825","price":3.34,"currency_code":"USD","in_stock":true},{"title":"F6806-30mm-42mm-7mm \/ Bearing Steel \/ 1Pcs","offer_id":50762373267730,"sku":"GLBZSJ073827","price":4.2,"currency_code":"USD","in_stock":true},{"title":"F6900-10mm-22mm-6mm \/ Bearing Steel \/ 1Pcs","offer_id":50762373300498,"sku":"GLBZSJ073810","price":1.86,"currency_code":"USD","in_stock":true},{"title":"F6901-12mm-24mm-6mm \/ Bearing Steel \/ 1Pcs","offer_id":50762373333266,"sku":"GLBZSJ073813","price":2.09,"currency_code":"USD","in_stock":true},{"title":"F6902-15mm-28mm-7mm \/ Bearing Steel \/ 1Pcs","offer_id":50762373366034,"sku":"GLBZSJ073814","price":2.0,"currency_code":"USD","in_stock":true},{"title":"F6903-17mm-30mm-7mm \/ Bearing Steel \/ 1Pcs","offer_id":50762373398802,"sku":"GLBZSJ073817","price":2.73,"currency_code":"USD","in_stock":true},{"title":"F6904-20mm-37mm-9mm \/ Bearing Steel \/ 1Pcs","offer_id":50762373431570,"sku":"GLBZSJ073822","price":3.84,"currency_code":"USD","in_stock":true},{"title":"F6905-25mm-42mm-9mm \/ Bearing Steel \/ 1Pcs","offer_id":50762373464338,"sku":"GLBZSJ073823","price":4.32,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/03_25843f35-5514-4f33-b28a-8dadbf78e505.jpg?v=1762198930"},{"product_id":"bearings-metal-shielded-miniature-bearings-multi-variations-5pcs","title":"Bearings Metal Shielded Miniature Bearings - Multi Variations 5pcs","description":"\u003ch2\u003e1. Product core introduction\u003c\/h2\u003eBearings Metal Shielded Miniature Bearings - Multi Variations 5pcs set is a comprehensive solution designed to meet the diverse and demanding needs of modern precision machinery. These bearings are the result of meticulous engineering, combining high-quality materials with advanced manufacturing techniques to deliver outstanding performance in the most compact and sensitive applications. Whether you're working on intricate electronics, innovative robotics, or other high-precision devices, our bearings offer the reliability and versatility you require. With a set of 5 pieces and multiple variations, you have the flexibility to choose the perfect bearing for each specific application, ensuring optimal functionality and efficiency.\u003cbr\u003e\u003ch2\u003e2. The main characteristics of the product\u003c\/h2\u003e        •     Metal Shielded for Durability and Protection\nThe metal shielding on these miniature bearings acts as a robust barrier against dust, dirt, moisture, and other harmful contaminants. This not only safeguards the internal components but also significantly extends the lifespan of the bearings. By preventing the ingress of foreign particles, the metal shields ensure smooth and uninterrupted operation, reducing the risk of premature wear and failure. This feature makes our bearings particularly suitable for use in environments where cleanliness and reliability are crucial.\n        •     Miniature Size for Compact Applications\nEngineered to be extremely compact, these bearings are designed to fit into the tightest of spaces. Their small form factor allows for seamless integration into miniature machinery and electronic devices, without compromising on performance. This makes them an ideal choice for applications where space is at a premium, such as in wearable technology, handheld medical devices, and miniature robotics. The miniature size also contributes to the overall weight reduction of the device, enhancing its portability and usability.\n        •     Precision Engineering for Smooth Operation\nManufactured with the highest level of precision, our bearings exhibit tight tolerances and excellent dimensional accuracy. The balls and raceways are carefully machined to ensure minimal friction and vibration during operation. This precision not only results in smooth and quiet rotation but also enhances the overall efficiency and accuracy of the equipment in which the bearings are used. Whether it's a high-speed spindle in a precision instrument or a slow-moving joint in a robotic arm, our bearings provide the reliable and precise performance needed.\n        •     Multiple Variations for Versatility\nThe set includes 5 pieces with different specifications and characteristics, offering you a wide range of options to match various application requirements. This versatility allows you to select the most suitable bearing for each specific task, whether it's handling different load capacities, rotational speeds, or operating temperatures. With multiple variations at your disposal, you can optimize the performance of your machinery and adapt to changing design needs with ease.\n        •     High-Quality Materials for Superior Performance\nCrafted from top-grade materials, our bearings possess excellent mechanical properties, including high strength, hardness, and fatigue resistance. The combination of quality materials and precision manufacturing ensures that the bearings can withstand heavy loads and repeated use without deformation or failure. This reliability is essential for applications where downtime is costly and performance is critical.\n三、产品使用场景\u003cbr\u003e\u003ch2\u003e3. Product use scene\u003c\/h2\u003e        •     Electronics Industry\nIn smartphones, tablets, and other portable electronic devices, these bearings are used to support the rotation of components such as the camera module, vibration motor, and cooling fan. The miniature size and metal shielding are perfect for the compact and sensitive nature of these electronics, protecting against dust and moisture that could affect performance. In hard disk drives, the bearings ensure the smooth and precise rotation of the spindle, allowing for rapid and accurate data access.\n        •     Robotics and Automation\nIn small robotic joints and actuators, the Bearings Metal Shielded Miniature Bearings provide precise and smooth movement. Their ability to handle various loads and speeds allows the robots to perform delicate tasks with accuracy and stability. The metal shielding is also crucial in industrial environments where the robots may be exposed to dust and debris. Automated manufacturing equipment, such as pick-and-place machines and 3D printers, use these bearings in their moving parts to ensure reliable and repeatable operation.\n        •     Medical Devices\nIn insulin pumps, dialysis machines, and other implantable or handheld medical devices, the bearings' precision and durability are vital. The miniature size allows for easy integration into the compact design of these devices, while the metal shielding ensures the sterility and reliability of the equipment, protecting patients from potential contaminants. Surgical instruments that require smooth rotation, such as biopsy needles and arthroscopic tools, also benefit from these high-quality bearings.\n        •     Consumer Goods and Appliances\nIn compact household appliances like electric shavers, toothbrushes, and mini fans, the bearings enable smooth and quiet operation. The metal shielding protects against the ingress of hair, dust, and moisture, ensuring a longer lifespan and reliable performance. In toys and hobbyist electronics, these bearings add a level of precision and durability, enhancing the overall user experience.\u003cbr\u003e\u003ch2\u003e4. Product use instructions\u003c\/h2\u003e1、Installation\nBefore installation, ensure that the work area is clean and free from any debris or contaminants. Use clean, lint-free gloves to handle the bearings to prevent fingerprints and other residues from affecting their performance.\nInspect each bearing for any signs of damage or defects, such as scratches, dents, or irregularities on the raceways or balls. If any issues are detected, do not install the bearing and contact the supplier for a replacement.\nWhen installing the bearing onto the shaft, use a gentle and even pressure to ensure proper seating. Avoid using excessive force, as this could cause damage to the bearing or the shaft. If necessary, use a suitable installation tool, such as a press fit sleeve or a bearing installer, to ensure accurate and damage-free installation.\nEnsure that the bearing is properly aligned with the shaft and the housing. Any misalignment can lead to increased wear and reduced bearing life. Use alignment tools or precision jigs to achieve the correct alignment, especially in applications where precision is critical.\n2、Operation\nOnce the bearings are installed, start the equipment gradually and allow it to reach its normal operating temperature. Avoid sudden starts and stops, as this can cause excessive stress on the bearings and lead to premature failure.\nMonitor the operating temperature, vibration, and noise levels of the bearings during operation. Any significant changes in these parameters could indicate a problem, such as insufficient lubrication, misalignment, or overloading. If detected, take immediate action to address the issue and prevent further damage.\nEnsure that the equipment is operating within the specified load and speed limits of the bearings. Exceeding these limits can significantly reduce the bearings' lifespan and may result in catastrophic failure. Refer to the product documentation or consult the supplier for the recommended operating parameters.\n3、Maintenance\nRegularly clean the bearings and their surrounding area to remove any dirt, dust, or other contaminants that could accumulate during operation. Use a suitable cleaning solvent and a soft brush or cloth to gently wipe the bearing surfaces. Avoid using harsh chemicals or abrasive materials that could damage the bearings.\nCheck the lubrication level and quality of the bearings regularly. The frequency of lubrication depends on the operating conditions and the type of lubricant used. Use a high-quality lubricant that is suitable for the application and the operating environment. Follow the manufacturer's recommendations for lubricant application methods and quantities.\nPeriodically inspect the bearings for signs of wear, such as pitting, spalling, or increased clearance. If the bearings show signs of significant wear, they should be replaced promptly to prevent further damage to the equipment. Use a micrometer or other precision measurement tools to accurately assess the bearing's condition.\n        •     By following these guidelines, you can ensure the optimal performance and longevity of our Bearings Metal Shielded Miniature Bearings - Multi Variations 5pcs set in your applications. If you have any questions or need further technical assistance, please do not hesitate to contact our customer support team.","brand":"HomeDIYer","offers":[{"title":"603ZZ-3mmx9mmx5mm","offer_id":51056254189842,"sku":"GLBZSJ073741x5","price":2.37,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/02_14cb7f88-7c0d-4039-b787-82ca401164b5.jpg?v=1762198932"},{"product_id":"stainless-steel-deep-groove-ball-bearing-miniature-shielded-bearing","title":"Stainless Steel Deep Groove Ball Bearing Miniature Shielded Bearing","description":"\u003ch2\u003e1. Product core introduction\u003c\/h2\u003eStainless Steel Deep Groove Ball Bearing Miniature Shielded Bearing represents the pinnacle of precision engineering for compact and demanding applications. Engineered with meticulous attention to detail, these bearings are designed to provide reliable rotational support in the most space-constrained environments. Made from high-quality stainless steel, they offer not only excellent mechanical performance but also outstanding resistance to corrosion, making them suitable for a wide range of industries and applications. The shielded design further enhances their durability and reliability by protecting the internal components from contaminants, ensuring smooth and consistent operation over an extended period. Whether it's in the intricate mechanisms of electronics, the precise movements of robotics, or the sensitive instruments of various fields, our bearings are the go-to choice for professionals seeking top-notch performance and reliability.\u003cbr\u003e\u003ch2\u003e2. The main characteristics of the product\u003c\/h2\u003e        •       Premium Stainless Steel Material\nCrafted from high-grade stainless steel, these bearings possess exceptional strength and hardness, allowing them to withstand heavy loads and harsh operating conditions. The stainless steel construction also provides excellent resistance to rust, corrosion, and oxidation, making them suitable for use in humid, acidic, or alkaline environments. This durability ensures a long service life and reduces the need for frequent replacements, ultimately saving costs and maintenance efforts.\n        •       Miniature Size for Space Efficiency\nThe compact and miniature design of these bearings is specifically tailored for applications where space is at a premium. Their small form factor enables seamless integration into tight and confined spaces, without compromising on performance. This makes them ideal for use in portable electronics, miniature machinery, and other devices where size and weight are critical factors.\n        •       Shielded Design for Contaminant Protection\nThe built-in shields on these bearings act as a barrier against dust, dirt, moisture, and other contaminants that could otherwise enter the bearing and cause damage or premature failure. The shields effectively keep the internal components clean and lubricated, ensuring smooth operation and extending the bearing's lifespan. This feature is especially valuable in environments where contaminants are prevalent, such as industrial settings, outdoor equipment, or dusty workshops.\n        •       Deep Groove Ball Bearing Technology\nThe deep groove design of the ball bearings allows for efficient radial load distribution, providing high load-carrying capacity and excellent stability. The grooves are precisely machined to ensure proper ball movement and minimal friction, resulting in smooth and quiet operation. This technology also enables the bearings to handle both radial and axial loads simultaneously, making them versatile and suitable for a wide range of applications.\n        •       Precision Manufacturing and Tight Tolerances\nOur bearings are manufactured using advanced precision techniques and adhere to strict dimensional tolerances. This ensures that each bearing is consistent in performance and quality, with minimal variation in size, shape, and surface finish. The precision manufacturing process results in low vibration, reduced noise levels, and enhanced rotational accuracy, making these bearings ideal for applications where precision and reliability are of utmost importance.\u003cbr\u003e\u003ch2\u003e3. Product use scene\u003c\/h2\u003e        •       Electronics Industry\nIn smartphones, tablets, and other handheld devices, these bearings are used to support the rotation of various components such as the camera module, vibration motor, and cooling fan. The miniature size and shielded design are perfect for the compact and sensitive nature of these electronics, ensuring smooth operation and protecting against dust and moisture that could affect performance.\nHard disk drives rely on the precision and reliability of these bearings to enable the smooth rotation of the spindle, allowing for rapid and accurate data access. The stainless steel construction provides durability and resistance to the magnetic fields present in the drive, while the shielded feature helps keep the internal components clean, reducing the risk of data loss due to bearing failure.\n        •       Robotics and Automation\nIn small robotic joints and actuators, the Stainless Steel Deep Groove Ball Bearing Miniature Shielded Bearings are essential for providing precise and smooth movement. Their ability to handle both radial and axial loads allows the robots to perform delicate tasks with accuracy and stability. The corrosion resistance is also crucial in environments where the robots may be exposed to moisture or chemicals.\nAutomated manufacturing equipment, such as pick-and-place machines and 3D printers, use these bearings in their moving parts to ensure reliable and repeatable operation. The shielded design helps prevent debris from interfering with the bearing's performance, reducing downtime and maintenance requirements.\n        •       Medical and Laboratory Equipment\nIn medical devices such as insulin pumps, dialysis machines, and surgical instruments, the bearings' precision and corrosion resistance are vital. The miniature size allows for easy integration into the compact design of these devices, while the shielded feature ensures the sterility and reliability of the equipment, protecting patients from potential contaminants.\nLaboratory instruments, such as centrifuges, microscopes, and spectrometers, require bearings that can provide accurate and stable rotation. The Stainless Steel Deep Groove Ball Bearing Miniature Shielded Bearings meet these requirements, with their precision manufacturing and contaminant protection capabilities enhancing the performance and lifespan of the instruments.\u003cbr\u003e\u003ch2\u003e4. Product use instructions\u003c\/h2\u003e1、Installation\nBefore installation, ensure that the work area is clean and free from any debris or contaminants. Use clean, lint-free gloves to handle the bearing to prevent fingerprints and other residues from affecting its performance.\nInspect the bearing for any signs of damage or defects, such as scratches, dents, or irregularities on the raceways or balls. If any issues are detected, do not install the bearing and contact the supplier for a replacement.\nWhen installing the bearing onto the shaft, use a gentle and even pressure to ensure proper seating. Avoid using excessive force, as this could cause damage to the bearing or the shaft. If necessary, use a suitable installation tool, such as a press fit sleeve or a bearing installer, to ensure accurate and damage-free installation.\nEnsure that the bearing is properly aligned with the shaft and the housing. Any misalignment can lead to increased wear and reduced bearing life. Use alignment tools or precision jigs to achieve the correct alignment, especially in applications where precision is critical.\n2、Operation\nOnce the bearing is installed, start the equipment gradually and allow it to reach its normal operating temperature. Avoid sudden starts and stops, as this can cause excessive stress on the bearing and lead to premature failure.\nMonitor the operating temperature, vibration, and noise levels of the bearing during operation. Any significant changes in these parameters could indicate a problem, such as insufficient lubrication, misalignment, or overloading. If detected, take immediate action to address the issue and prevent further damage.\nEnsure that the equipment is operating within the specified load and speed limits of the bearing. Exceeding these limits can significantly reduce the bearing's lifespan and may result in catastrophic failure. Refer to the product documentation or consult the supplier for the recommended operating parameters.\n3、Maintenance\nRegularly clean the bearing and its surrounding area to remove any dirt, dust, or other contaminants that could accumulate during operation. Use a suitable cleaning solvent and a soft brush or cloth to gently wipe the bearing surfaces. Avoid using harsh chemicals or abrasive materials that could damage the bearing.\nCheck the lubrication level and quality of the bearing regularly. The frequency of lubrication depends on the operating conditions and the type of lubricant used. Use a high-quality lubricant that is suitable for the application and the operating environment. Follow the manufacturer's recommendations for lubricant application methods and quantities.\nPeriodically inspect the bearing for signs of wear, such as pitting, spalling, or increased clearance. If the bearing shows signs of significant wear, it should be replaced promptly to prevent further damage to the equipment. Use a micrometer or other precision measurement tools to accurately assess the bearing's condition.\n        •       By following these guidelines, you can ensure the optimal performance and longevity of our Stainless Steel Deep Groove Ball Bearing Miniature Shielded Bearing in your applications. If you have any questions or need further technical assistance, please do not hesitate to contact our customer support team.","brand":"HomeDIYer","offers":[{"title":"MR52ZZ-2mm-5mm-2.5mm","offer_id":50762422288658,"sku":"GLBZSJ073853","price":1.53,"currency_code":"USD","in_stock":true},{"title":"MR62ZZ-2mm-6mm-2.5mm","offer_id":50762422321426,"sku":"GLBZSJ073852","price":1.45,"currency_code":"USD","in_stock":true},{"title":"MR63ZZ-3mm-6mm-2.5mm","offer_id":50762422354194,"sku":"GLBZSJ073861","price":1.46,"currency_code":"USD","in_stock":true},{"title":"MR74ZZ-4mm-7mm-2.5mm","offer_id":50762422386962,"sku":"GLBZSJ073864","price":1.45,"currency_code":"USD","in_stock":true},{"title":"MR83ZZ-3mm-8mm-3mm","offer_id":50762422419730,"sku":"GLBZSJ073858","price":1.55,"currency_code":"USD","in_stock":true},{"title":"MR84ZZ-4mm-8mm-3mm","offer_id":50762422452498,"sku":"GLBZSJ073859","price":1.49,"currency_code":"USD","in_stock":true},{"title":"MR85ZZ-5mm-8mm-2.5mm","offer_id":50762422485266,"sku":"GLBZSJ073856","price":1.45,"currency_code":"USD","in_stock":true},{"title":"MR95ZZ-4mm-9mm-3mm","offer_id":50762422518034,"sku":"GLBZSJ073855","price":1.46,"currency_code":"USD","in_stock":true},{"title":"MR104ZZ-4mm-10mm-4mm","offer_id":50762422550802,"sku":"GLBZSJ073854","price":1.52,"currency_code":"USD","in_stock":true},{"title":"MR105ZZ-5mm-10mm-4mm","offer_id":50762422583570,"sku":"GLBZSJ073865","price":1.49,"currency_code":"USD","in_stock":true},{"title":"MR106ZZ-6mm-10mm-3mm","offer_id":50762422616338,"sku":"GLBZSJ073862","price":1.48,"currency_code":"USD","in_stock":true},{"title":"MR115ZZ-5mm-11mm-4mm","offer_id":50762422649106,"sku":"GLBZSJ073863","price":1.46,"currency_code":"USD","in_stock":true},{"title":"MR117ZZ-7mm-11mm-3mm","offer_id":50762422681874,"sku":"GLBZSJ073868","price":1.52,"currency_code":"USD","in_stock":true},{"title":"MR126ZZ-6mm-12mm-4mm","offer_id":50762422714642,"sku":"GLBZSJ073857","price":1.5,"currency_code":"USD","in_stock":true},{"title":"MR128ZZ-8mm-12mm-3.5mm","offer_id":50762422747410,"sku":"GLBZSJ073866","price":1.48,"currency_code":"USD","in_stock":true},{"title":"MR137ZZ-7mm-13mm-4mm","offer_id":50762422780178,"sku":"GLBZSJ073860","price":1.6,"currency_code":"USD","in_stock":true},{"title":"MR148ZZ-8mm-14mm-4mm","offer_id":50762422812946,"sku":"GLBZSJ073867","price":1.53,"currency_code":"USD","in_stock":true},{"title":"603ZZ-3mm-9mm-5mm","offer_id":50762422845714,"sku":"GLBZSJ073887","price":1.54,"currency_code":"USD","in_stock":true},{"title":"604ZZ-4mm-12mm-4mm","offer_id":50762422878482,"sku":"GLBZSJ073875","price":1.56,"currency_code":"USD","in_stock":true},{"title":"605ZZ-5mm-12mm-5mm","offer_id":50762422911250,"sku":"GLBZSJ073877","price":5.18,"currency_code":"USD","in_stock":true},{"title":"606ZZ-6mm-17mm-6mm","offer_id":50762422944018,"sku":"GLBZSJ073886","price":6.04,"currency_code":"USD","in_stock":true},{"title":"607ZZ-7mm-19mm-6mm","offer_id":50762422976786,"sku":"GLBZSJ073892","price":6.42,"currency_code":"USD","in_stock":true},{"title":"608ZZ-8mm-22mm-7mm","offer_id":50762423009554,"sku":"GLBZSJ073894","price":7.42,"currency_code":"USD","in_stock":true},{"title":"609ZZ-9mm-24mm-7mm","offer_id":50762423042322,"sku":"GLBZSJ073876","price":9.18,"currency_code":"USD","in_stock":true},{"title":"623ZZ-3mm-10mm-4mm","offer_id":50762423075090,"sku":"GLBZSJ073880","price":4.74,"currency_code":"USD","in_stock":true},{"title":"624ZZ-4mm-13mm-5mm","offer_id":50762423107858,"sku":"GLBZSJ073878","price":5.06,"currency_code":"USD","in_stock":true},{"title":"625ZZ-5mm-16mm-5mm","offer_id":50762423140626,"sku":"GLBZSJ073881","price":5.46,"currency_code":"USD","in_stock":true},{"title":"626ZZ-6mm-19mm-6mm","offer_id":50762423173394,"sku":"GLBZSJ073891","price":6.4,"currency_code":"USD","in_stock":true},{"title":"627ZZ-7mm-22mm-7mm","offer_id":50762423206162,"sku":"GLBZSJ073895","price":7.83,"currency_code":"USD","in_stock":true},{"title":"628ZZ-8mm-24mm-8mm","offer_id":50762423238930,"sku":"GLBZSJ073899","price":9.39,"currency_code":"USD","in_stock":true},{"title":"629ZZ-9mm-26mm-8mm","offer_id":50762423271698,"sku":"GLBZSJ073879","price":11.3,"currency_code":"USD","in_stock":true},{"title":"634ZZ-4mm-16mm-5mm","offer_id":50762423304466,"sku":"GLBZSJ073903","price":7.49,"currency_code":"USD","in_stock":true},{"title":"635ZZ-5mm-19mm-6mm","offer_id":50762423337234,"sku":"GLBZSJ073904","price":8.22,"currency_code":"USD","in_stock":true},{"title":"636ZZ-6mm-22mm-7mm","offer_id":50762423370002,"sku":"GLBZSJ073905","price":10.12,"currency_code":"USD","in_stock":true},{"title":"638ZZ-8mm-28mm-9mm","offer_id":50762423402770,"sku":"GLBZSJ073913","price":15.09,"currency_code":"USD","in_stock":true},{"title":"683ZZ-3mm-7mm-3mm","offer_id":50762423435538,"sku":"GLBZSJ073869","price":4.48,"currency_code":"USD","in_stock":true},{"title":"684ZZ-4mm-9mm-4mm","offer_id":50762423468306,"sku":"GLBZSJ073870","price":4.59,"currency_code":"USD","in_stock":true},{"title":"685ZZ-5mm-11mm-5mm","offer_id":50762423501074,"sku":"GLBZSJ073873","price":4.8,"currency_code":"USD","in_stock":true},{"title":"686ZZ-6mm-13mm-5mm","offer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Steel Precision Micro Deep Groove Ball Bearing","description":"\u003ch2\u003e1. Product core introduction\u003c\/h2\u003eStainless Steel Precision Micro Deep Groove Ball Bearing is a remarkable piece of engineering designed to meet the most demanding requirements of modern, compact, and precision-driven applications. These bearings are at the heart of countless miniature systems, providing the essential support and rotational smoothness needed for optimal performance. Whether it's in the intricate mechanisms of electronics, the life-saving devices of the medical field, or the delicate workings of high-tech instrumentation, our bearings prove their worth by ensuring reliable and accurate operation. Made from high-quality stainless steel, they offer not only outstanding mechanical properties but also excellent resistance to corrosion, making them suitable for a wide range of environments.\n\u003cbr\u003e\u003ch2\u003e2. The main characteristics of the product\u003c\/h2\u003e        •       Premium Stainless Steel Construction\nCrafted from top-grade stainless steel, our bearings possess remarkable strength and durability. The material's inherent corrosion resistance ensures that the bearings can withstand exposure to moisture, chemicals, and other harsh elements, making them ideal for applications in humid or corrosive environments. This property significantly extends the service life of the bearings and reduces the need for frequent replacements, ultimately saving costs and maintenance efforts.\n        •       Ultra-Precision Engineering\nManufactured with the highest level of precision, these micro bearings exhibit extremely tight tolerances in both dimensional accuracy and geometric form. The balls and raceways are machined to perfection, resulting in minimal clearance and vibration during operation. This precision is crucial for applications where even the slightest deviation can cause performance issues, such as in precision measurement instruments and high-speed electronics.\n        •       Micro Size, Big Impact\nThe compact design of these bearings allows them to fit into the tiniest of spaces, enabling the creation of miniaturized yet highly functional devices. Despite their small size, they do not compromise on performance, offering reliable radial load-carrying capacity and smooth rotational characteristics. This makes them a popular choice for applications where space is at a premium, such as in wearable technology, miniature robotics, and handheld medical devices.\n        •       Deep Groove Design Advantage\nThe deep groove geometry of the bearing provides enhanced radial load-carrying capacity compared to standard bearings of similar size. This design allows the balls to better distribute the load, reducing stress concentrations and ensuring stable operation even under heavy loads. Additionally, the deep groove helps to retain the lubricant, further improving the bearing's performance and longevity.\n        •       Low Noise and Smooth Operation\nThanks to the precision manufacturing process and the optimized design of the bearing components, our micro deep groove ball bearings operate with extremely low noise and vibration levels. This is essential for applications where quiet operation is required, such as in audio equipment, precision optics, and laboratory instruments. The smooth rotation also contributes to the overall efficiency and reliability of the system in which the bearing is used.\u003cbr\u003e\u003ch2\u003e3. Product use scene\u003c\/h2\u003e        •       Electronics Industry\nIn hard disk drives, the bearings ensure the smooth and precise rotation of the spindle, allowing for rapid and accurate data access. Their micro size and low noise characteristics are crucial for maintaining the quiet operation of the drive, while the precision engineering guarantees reliable performance in the demanding environment of data storage.\nFor miniature motors used in various electronic devices, such as smartphones, cameras, and drones, the Stainless Steel Precision Micro Deep Groove Ball Bearings provide the necessary support and rotational smoothness. They enable the motors to operate efficiently, converting electrical energy into precise mechanical motion, enhancing the overall functionality and performance of the devices.\n        •       Medical Devices\nIn insulin pumps and other implantable medical devices, the corrosion resistance and biocompatibility of the stainless steel bearings are of utmost importance. These bearings ensure the reliable operation of the pumping mechanism, delivering precise doses of medication to patients. The micro size and precision also contribute to the miniaturization of the devices, making them more comfortable and convenient for the users.\nSurgical instruments and diagnostic equipment often rely on these bearings for smooth movement and accurate positioning. Whether it's the rotation of a biopsy needle or the adjustment of an optical lens in a microscope, the precision and reliability of our bearings play a critical role in the success of medical procedures and accurate diagnoses.\n        •       Aerospace and Defense\nIn the guidance systems of missiles and satellites, the micro deep groove ball bearings are used to support the precise movement of various components. Their ability to operate in extreme conditions, including high temperatures, vacuum, and strong vibrations, makes them indispensable for aerospace applications. The precision and reliability of these bearings are essential for the accurate navigation and control of these high-tech systems.\nMilitary-grade electronics and communication devices also benefit from the compact size and high performance of our bearings. They enable the smooth operation of antennas, gyroscopes, and other critical components, ensuring the effectiveness and reliability of military equipment in the field.\u003cbr\u003e\u003ch2\u003e4. Product use instructions\u003c\/h2\u003e1、Installation\nBefore installation, ensure that the work area is clean and free from any debris or contaminants that could potentially damage the bearing. Use clean, lint-free gloves to handle the bearing to prevent fingerprints and other residues from affecting its performance.\nInspect the bearing for any signs of damage or defects, such as scratches, dents, or irregularities on the raceways or balls. If any issues are detected, do not install the bearing and contact the supplier for a replacement.\nWhen installing the bearing onto the shaft, use a gentle and even pressure to ensure proper seating. Avoid using excessive force, as this could cause damage to the bearing or the shaft. If necessary, use a suitable installation tool, such as a press fit sleeve or a bearing installer, to ensure accurate and damage-free installation.\nEnsure that the bearing is properly aligned with the shaft and the housing. Any misalignment can lead to increased wear and reduced bearing life. Use alignment tools or precision jigs to achieve the correct alignment, especially in applications where precision is critical.\n2、Operation\nOnce the bearing is installed, start the equipment gradually and allow it to reach its normal operating temperature. Avoid sudden starts and stops, as this can cause excessive stress on the bearing and lead to premature failure.\nMonitor the operating temperature, vibration, and noise levels of the bearing during operation. Any significant changes in these parameters could indicate a problem, such as insufficient lubrication, misalignment, or overloading. If detected, take immediate action to address the issue and prevent further damage.\nEnsure that the equipment is operating within the specified load and speed limits of the bearing. Exceeding these limits can significantly reduce the bearing's lifespan and may result in catastrophic failure. Refer to the product documentation or consult the supplier for the recommended operating parameters.\n3、Maintenance\nRegularly clean the bearing and its surrounding area to remove any dirt, dust, or other contaminants that could accumulate during operation. Use a suitable cleaning solvent and a soft brush or cloth to gently wipe the bearing surfaces. Avoid using harsh chemicals or abrasive materials that could damage the bearing.\nCheck the lubrication level and quality of the bearing regularly. The frequency of lubrication depends on the operating conditions and the type of lubricant used. Use a high-quality lubricant that is suitable for the application and the operating environment. Follow the manufacturer's recommendations for lubricant application methods and quantities.\nPeriodically inspect the bearing for signs of wear, such as pitting, spalling, or increased clearance. If the bearing shows signs of significant wear, it should be replaced promptly to prevent further damage to the equipment. Use a micrometer or other precision measurement tools to accurately assess the bearing's condition.\n        •       By following these guidelines, you can ensure the optimal performance and longevity of our Stainless Steel Precision Micro Deep Groove Ball Bearing in your applications. If you have any questions or need further technical assistance, please do not hesitate to contact our customer support team.","brand":"HomeDIYer","offers":[{"title":"10mmx26mmx8mm \/ Stainless Steels","offer_id":50762424025362,"sku":"GLBZSJ073900","price":2.03,"currency_code":"USD","in_stock":true},{"title":"10mmx28mmx8mm \/ Stainless Steels","offer_id":50762424058130,"sku":"GLBZSJ073902","price":2.21,"currency_code":"USD","in_stock":true},{"title":"15mmx32mmx9mm \/ Stainless Steels","offer_id":50762424090898,"sku":"GLBZSJ073909","price":2.65,"currency_code":"USD","in_stock":true},{"title":"17mmx35mmx10mm \/ Stainless Steels","offer_id":50762424123666,"sku":"GLBZSJ073914","price":3.21,"currency_code":"USD","in_stock":true},{"title":"20mmx42mmx12mm \/ Stainless Steels","offer_id":50762424156434,"sku":"GLBZSJ073920","price":4.58,"currency_code":"USD","in_stock":true},{"title":"25mmx47mmx12mm \/ Stainless 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Product core introduction\u003c\/h2\u003eOur Double Row Self Aligning Ball Bearing Cylindrical Shaft is a top-of-the-line solution for various mechanical applications. This innovative bearing is designed to provide reliable and efficient performance, especially in situations where shaft misalignment is a concern. It combines advanced engineering with high-quality materials to offer a durable and precise rotational support system. Whether it's used in industrial machinery, automotive components, or agricultural equipment, this bearing plays a crucial role in ensuring the smooth operation and longevity of the overall system, reducing maintenance costs and downtime.\u003cbr\u003e\u003ch2\u003e2. The main characteristics of the product\u003c\/h2\u003e        •       Self-Aligning Capability\nThe unique design of the double row self-aligning ball bearing allows it to automatically compensate for angular misalignment of the shaft, up to a certain degree. This feature is invaluable in applications where the shaft may be subject to deflection or misalignment due to factors such as thermal expansion, mounting inaccuracies, or dynamic loads. It helps to evenly distribute the load across the bearing, minimizing stress concentrations and reducing the risk of premature bearing failure.\n        •       High Load Capacity\nWith two rows of precision balls, this bearing is capable of handling significant radial and axial loads. The optimized ball and raceway geometry ensure that the load is effectively distributed, providing excellent load-carrying capacity and rigidity. This makes it suitable for use in heavy-duty applications where reliable performance under high loads is essential.\n        •       Low Friction and High Efficiency\nThe balls and raceways are manufactured to extremely tight tolerances and finished to a high surface smoothness, resulting in low friction during operation. This not only reduces power consumption but also minimizes heat generation, enhancing the overall efficiency and reliability of the bearing and the associated equipment. The low friction characteristics also contribute to a longer service life by reducing wear on the bearing components.\n        •       Precision Engineering\nOur bearings are crafted with precision to meet the strictest quality standards. The dimensional accuracy and geometric tolerances are carefully controlled to ensure proper fit and alignment with the shaft and housing. This precision engineering results in smooth rotation, minimal vibration, and excellent repeatability, making it ideal for applications where accuracy and stability are critical, such as in precision machinery and automated equipment.\n        •       Durable Construction\nMade from high-quality alloy steel, the bearing components are heat-treated to enhance their strength and hardness. The seals and cages are also designed to withstand the rigors of operation, protecting the balls and raceways from contaminants and ensuring proper lubrication retention. This combination of materials and design features ensures the durability and long-term reliability of the bearing, even in harsh operating environments.\u003cbr\u003e\u003ch2\u003e3. Product use scene\u003c\/h2\u003e        •       Industrial Machinery\nIn pumps and compressors, the Double Row Self Aligning Ball Bearing Cylindrical Shaft helps to support the rotating shafts and compensate for any misalignment that may occur during operation. This ensures efficient fluid transfer and compression, reducing energy consumption and maintenance requirements.\nFor conveyor systems, the bearing allows for smooth and reliable movement of the conveyor rollers, even when the shafts are subjected to uneven loads or slight misalignments. This helps to prevent belt slippage and wear, improving the overall performance and productivity of the conveyor.\nIn industrial fans and blowers, the self-aligning feature of the bearing is crucial for maintaining proper balance and alignment of the rotating blades. This results in reduced vibration and noise, as well as improved aerodynamic efficiency, enhancing the performance and lifespan of the fan.\n        •       Automotive Applications\nIn automotive transmissions and axles, the bearing provides reliable support for the rotating shafts, compensating for any misalignment caused by the movement and vibration of the vehicle. This helps to ensure smooth gear shifting and efficient power transfer, enhancing the overall performance and drivability of the vehicle.\nFor automotive wheel hubs, the self-aligning ball bearing helps to accommodate the slight misalignments that can occur during normal driving conditions, such as when going over bumps or turning. This reduces stress on the wheel bearings and other components, improving the safety and reliability of the vehicle.\n        •       Agricultural Equipment\nIn tractors and other agricultural machinery, the Double Row Self Aligning Ball Bearing Cylindrical Shaft is used in various rotating components, such as the engine crankshaft, power take-off shafts, and implement spindles. The self-aligning feature is essential for withstanding the rough operating conditions and vibrations encountered in agricultural applications, ensuring reliable performance and reducing downtime during the busy farming season.\u003cbr\u003e\u003ch2\u003e4. Product use instructions\u003c\/h2\u003e1、Installation\nBefore installation, carefully clean the bearing, shaft, and housing to remove any dirt, debris, or rust. Inspect the bearing for any signs of damage or defects, and ensure that it is the correct size and type for the application.\nApply a suitable lubricant to the bearing surfaces, following the manufacturer's recommendations for lubricant type and quantity. The lubricant should be evenly distributed to ensure proper operation and reduce friction.\nWhen installing the bearing onto the shaft, use appropriate tools and techniques to avoid applying excessive force or damaging the bearing. Ensure that the bearing is properly seated and aligned with the shaft and housing.\nCheck the shaft alignment and bearing clearance after installation to ensure that they are within the specified tolerances. This can be done using alignment tools and feeler gauges.\n2、Operation\nStart the equipment gradually and allow the bearing to warm up to its operating temperature. Avoid sudden starts and stops, as this can cause excessive stress on the bearing and lead to premature failure.\nMonitor the operating temperature, vibration, and noise levels of the bearing during operation. Any significant changes in these parameters could indicate a problem, such as insufficient lubrication, misalignment, or overloading. If detected, take immediate action to address the issue and prevent further damage.\nEnsure that the equipment is operating within the specified load and speed limits of the bearing. Exceeding these limits can significantly reduce the bearing's lifespan and may result in catastrophic failure.\n3、Maintenance\nRegularly inspect the bearing for signs of wear, damage, or contamination. This can be done during routine equipment maintenance or by using condition monitoring techniques such as vibration analysis and oil analysis.\nIf the bearing shows signs of wear, such as pitting, spalling, or increased clearance, it should be replaced promptly. Delaying replacement can lead to further damage to the equipment and increased downtime.\nClean the bearing and its housing periodically to remove dirt, dust, and other contaminants. Use a suitable cleaning solvent and a soft brush or cloth to avoid scratching the bearing surfaces.\nCheck and replenish the lubricant at regular intervals, following the manufacturer's recommended lubrication schedule. Ensure that the lubricant is of the correct type and quality and is applied in the appropriate amount.\n        •       By following these guidelines, you can ensure the optimal performance and longevity of our Double Row Self Aligning Ball Bearing Cylindrical Shaft in your applications. 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Engineered for high radial loads, smooth rotation, and long-lasting performance in machinery, automotive repairs, or DIY projects. Ideal for HomeDIYers tackling industrial equipment maintenance, farm tools, or custom mechanical builds requiring precision and corrosion 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Follower Needle Roller Bearing | High Load Industrial Bearings","description":"\u003cdiv style=\"max-width: 1200px; margin: 0 auto; font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; color: #333; line-height: 1.6;\" class=\"product-description\"\u003e\n\u003ch2 style=\"color: #2d2d2d; border-bottom: 2px solid #e1e1e1; padding-bottom: 10px;\"\u003eHeavy Duty Cam Follower Needle Roller Bearings\u003c\/h2\u003e\n\u003cdiv style=\"background: #f9f9f9; padding: 20px; margin: 20px 0; border-radius: 5px;\" class=\"key-features\"\u003e\n\u003ch3 style=\"color: #e74c3c; margin-top: 0;\"\u003e⚙️ Core Features\u003c\/h3\u003e\n\u003cul style=\"list-style: none; padding-left: 20px;\"\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e✅ \u003cstrong\u003eHigh Load Capacity:\u003c\/strong\u003e 10,000N+ radial load rating\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e✅ \u003cstrong\u003ePrecision Engineering:\u003c\/strong\u003e Grade GCr15 bearing steel\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e✅ \u003cstrong\u003eDurable Design:\u003c\/strong\u003e Through-hardened raceways (HRC 58-62)\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e✅ \u003cstrong\u003eVersatile Mounting:\u003c\/strong\u003e Eccentric collar adjustment system\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin: 25px 0;\" class=\"specs-section\"\u003e\n\u003ch3 style=\"color: #2d2d2d;\"\u003e📏 Technical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 15px; margin-top: 15px;\"\u003e\n\u003cdiv style=\"background: #fff; padding: 15px; border: 1px solid #eee; border-radius: 4px;\"\u003e\n\u003ch4 style=\"margin: 0 0 10px 0; color: #666;\"\u003eSize Parameters\u003c\/h4\u003e\n\u003cp style=\"margin: 0;\"\u003e⌀ Bore: 12mm-30mm\u003cbr\u003e⌀ Outer: 28mm-62mm\u003cbr\u003eLength: 24mm-55mm\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #fff; padding: 15px; border: 1px solid #eee; border-radius: 4px;\"\u003e\n\u003ch4 style=\"margin: 0 0 10px 0; color: #666;\"\u003ePerformance Data\u003c\/h4\u003e\n\u003cp style=\"margin: 0;\"\u003e⚡ Max Speed: 3000 RPM\u003cbr\u003e🔩 Roller Count: 15-28 needles\u003cbr\u003e🛡️ Seal Type: Triple lip contact\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin: 25px 0;\" class=\"usage-section\"\u003e\n\u003ch3 style=\"color: #2d2d2d;\"\u003e🏭 Industrial Applications\u003c\/h3\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 10px; margin-top: 15px;\"\u003e\n\u003cspan style=\"background: #e8f4f8; padding: 8px 15px; border-radius: 20px;\"\u003eConveyor Systems\u003c\/span\u003e \u003cspan style=\"background: #e8f4f8; padding: 8px 15px; border-radius: 20px;\"\u003ePrinting Machinery\u003c\/span\u003e \u003cspan style=\"background: #e8f4f8; padding: 8px 15px; border-radius: 20px;\"\u003ePackaging Equipment\u003c\/span\u003e \u003cspan style=\"background: #e8f4f8; padding: 8px 15px; border-radius: 20px;\"\u003eRobotic Arms\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003e1. Product core introduction\u003c\/h2\u003e\n\u003cp\u003eCam Follower Needle Roller Bearings are essential components in a wide range of mechanical systems. These bearings are specifically designed to provide reliable and efficient support for cam-driven mechanisms. Whether it's in industrial machinery, automotive engines, or various automated equipment, our bearings play a crucial role in ensuring smooth and precise motion. With a focus on durability and performance, they are engineered to withstand heavy loads and high-speed operations, making them the go-to choice for demanding applications.\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e2. The main characteristics of the product\u003c\/h2\u003e\n\u003cp\u003e• High Load Capacity The needle roller design allows for a large number of rollers to be in contact with the cam surface, distributing the load evenly. This enables the bearing to handle significant radial and axial forces, ensuring reliable operation even under extreme conditions. • Precision Engineering Manufactured with tight tolerances, our bearings offer excellent concentricity and dimensional accuracy. This precision ensures minimal clearance and vibration, resulting in smooth and quiet operation, which is vital for applications where accuracy and stability are crucial. • Low Friction The needle rollers are designed to reduce friction between the bearing and the cam, minimizing power loss and wear. This not only improves the overall efficiency of the system but also extends the service life of the bearing and the associated components. • Robust Construction Made from high-quality materials, such as hardened steel for the rollers and a durable outer ring, our bearings are built to last. They are resistant to corrosion, fatigue, and deformation, ensuring reliable performance in harsh operating environments. • Versatile Design Available in various sizes and configurations, our Cam Follower Needle Roller Bearings can be customized to meet the specific requirements of different applications. Whether it's a compact design for space-constrained applications or a heavy-duty version for industrial machinery, we have the right solution for you.\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e3. Product use scene\u003c\/h2\u003e\n\u003cp\u003e• Industrial Automation In conveyor systems, packaging machinery, and robotic arms, these bearings ensure precise and reliable movement of the cam-driven components. They enable the machinery to operate at high speeds and with great accuracy, improving production efficiency and reducing downtime. • Automotive Industry Used in engine camshafts, valve train systems, and fuel injection pumps, our bearings contribute to the smooth operation of the engine. They can withstand the high temperatures and loads generated by the engine, ensuring reliable performance and durability. • Printing and Paper Processing In printing presses and paper converting machinery, the bearings are used to control the movement of rollers and cylinders. Their precision and low friction characteristics are essential for achieving high-quality prints and smooth paper handling. • Textile Machinery For looms, spinning frames, and knitting machines, the Cam Follower Needle Roller Bearings provide the necessary support and precision for the cam-driven mechanisms. This allows for efficient production of high-quality textiles.\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e4. Product use instructions\u003c\/h2\u003e\n\u003cp\u003e1、Installation Before installation, ensure that the bearing and the mating surfaces are clean and free from debris. Lubricate the bearing with the recommended lubricant to reduce friction during installation. Gently insert the bearing into the housing, making sure it is properly aligned. Use a suitable tool to press the bearing into place if necessary, but avoid applying excessive force that could damage the bearing or the housing. Check the fit and clearance of the bearing after installation to ensure it meets the required specifications. 2、Operation Operate the equipment within the specified load and speed limits of the bearing. Excessive loads or speeds can lead to premature wear and failure. Monitor the temperature and vibration of the bearing during operation. Any significant increase in temperature or unusual vibration could indicate a problem and should be investigated immediately. Ensure that the bearing is properly lubricated at all times. Follow the recommended lubrication intervals and use the appropriate lubricant for the operating conditions. 3、Maintenance Regularly inspect the bearing for signs of wear, damage, or contamination. If any issues are detected, replace the bearing promptly to prevent further damage to the equipment. Clean the bearing and the surrounding area periodically to remove dirt, dust, and other contaminants. Use a suitable cleaning solvent and a soft brush or cloth to avoid scratching the bearing surfaces. Check the lubricant level and quality regularly. If the lubricant is contaminated or depleted, drain and replace it with fresh lubricant. • By following these guidelines, you can ensure the optimal performance and longevity of our Cam Follower Needle Roller Bearings in your applications. If you have any further questions or need technical assistance, please do not hesitate to contact our customer support team.\u003c\/p\u003e","brand":"HomeDIYer","offers":[{"title":"CF3 (KR10)","offer_id":50762428023058,"sku":"GLBZSJ074927","price":3.71,"currency_code":"USD","in_stock":true},{"title":"CF4 (KR12)","offer_id":50762428055826,"sku":"GLBZSJ074928","price":2.84,"currency_code":"USD","in_stock":true},{"title":"CF5(KR13)","offer_id":50762428088594,"sku":"GLBZSJ074929","price":2.26,"currency_code":"USD","in_stock":true},{"title":"CF6(KR16)","offer_id":50762428121362,"sku":"GLBZSJ074930","price":2.22,"currency_code":"USD","in_stock":true},{"title":"CF8(KR19)","offer_id":50762428154130,"sku":"GLBZSJ074931","price":2.66,"currency_code":"USD","in_stock":true},{"title":"CF10(KR22)","offer_id":50762428186898,"sku":"GLBZSJ074932","price":3.4,"currency_code":"USD","in_stock":true},{"title":"CF10-1(KR26)","offer_id":50762428219666,"sku":"GLBZSJ074933","price":4.04,"currency_code":"USD","in_stock":true},{"title":"CF12(KR30)","offer_id":50762428252434,"sku":"GLBZSJ074934","price":5.48,"currency_code":"USD","in_stock":true},{"title":"CF12-1(KR32)","offer_id":50762428285202,"sku":"GLBZSJ074935","price":5.68,"currency_code":"USD","in_stock":true},{"title":"CF16(KR35)","offer_id":50762428317970,"sku":"GLBZSJ074936","price":9.37,"currency_code":"USD","in_stock":true},{"title":"CF18(KR40)","offer_id":50762428350738,"sku":"GLBZSJ074937","price":12.38,"currency_code":"USD","in_stock":true},{"title":"CF20-1(KR47)","offer_id":50762428383506,"sku":"GLBZSJ074938","price":18.42,"currency_code":"USD","in_stock":true},{"title":"CF20(KR52)","offer_id":50762428416274,"sku":"GLBZSJ074939","price":21.07,"currency_code":"USD","in_stock":true},{"title":"CF24-1(KR72)","offer_id":50762428449042,"sku":"GLBZSJ074940","price":44.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/04_49f3b376-7f75-47f5-b1f9-ebc101ccf65f.jpg?v=1762198935"},{"product_id":"thrust-ball-bearings-miniature-high-precision","title":"Thrust Ball Bearings Miniature High Precision","description":"\u003ch2\u003e1. Product core introduction\u003c\/h2\u003eOur Thrust Ball Bearings Miniature High Precision are outstanding hardware fittings specifically designed for applications with strict requirements for precision and performance. Whether in precision machinery, small equipment, or creative DIY projects at home, these bearings can play a crucial role, providing stable and efficient operation support for your creations. They are manufactured using high-quality materials and advanced production techniques, ensuring precise thrust bearing within a very small space, making them an ideal choice for realizing the perfect combination of creativity and functionality.\u003cbr\u003e\u003ch2\u003e2. The main characteristics of the product\u003c\/h2\u003e        •       Exceptional Precision\nThe bearings are manufactured with advanced grinding and machining techniques, ensuring that the dimensions of the inner and outer rings, as well as the balls, are held to extremely tight tolerances. This results in a remarkably low coefficient of friction and minimal runout, enabling precise and consistent operation.\n        •       Compact Miniature Design\nTheir small size allows for easy integration into tight spaces, making them suitable for a wide range of miniaturized equipment and DIY gadgets. Despite their diminutive stature, they do not compromise on load-carrying capacity, providing robust support for axial thrust.\n        •       Premium Material Quality\nConstructed from high-strength and corrosion-resistant alloy materials, these bearings offer excellent durability and resistance to wear and tear. This ensures a long service life, even under harsh operating conditions, reducing the need for frequent replacements.\n        •       High Load-Bearing Capacity\nThe unique design of the thrust ball bearings enables them to handle significant axial loads. This makes them ideal for applications where heavy forces need to be managed, ensuring the stability and reliability of the overall system.\u003cbr\u003e\u003ch2\u003e3. Product use scene\u003c\/h2\u003e        •        Smart Home Devices: Such as small smart robots, smart curtain motors, etc., helping them achieve precise motion control, ensuring the stable and quiet operation of the device, and enhancing the overall performance and user experience of the smart home system.\n        •        Precision Instruments and Meters: In various precision measuring instruments and optical equipment, it provides precise support and rotation for key components, ensuring the measurement accuracy and stability of the instrument, meeting the needs of fields with extremely high precision requirements such as scientific research and experiments.\n        •        Creative DIY Projects: For example, self-made small wind generators, personalized rotating display racks, etc. With its miniature size and high precision characteristics, your creativity can be perfectly realized, adding professional charm and practical value to your DIY works.\n        •        Small Electronic Products: Such as portable hard disk drives, mini fans, etc., ensuring the smooth operation of internal rotating parts, improving the reliability and service life of electronic products, and reducing heat and noise generated by friction, optimizing product performance.\u003cbr\u003e\u003ch2\u003e4. Product use instructions\u003c\/h2\u003e        •        Pre-Installation Preparation: Before installation, ensure that the working area is clean and dry to avoid dust and impurities from entering the bearing. Carefully inspect the appearance of the bearing to ensure there is no damage, deformation, or foreign matter attached. At the same time, prepare appropriate installation tools, such as small wrenches, tweezers, etc., and avoid using excessive force to cause damage to the bearing.\n1、Installation Steps:\nGently place the bearing into the installation position, ensuring its correct positioning. The inner and outer rings should fit closely with the mating parts to avoid skew or offset.\nFor bearings that need to be fixed, use appropriate nuts or circlips for fastening. Pay attention to the appropriate tightening torque, which should be sufficient to ensure the firm installation of the bearing without over-tightening that may cause deformation or damage to the bearing.\nDuring the installation process, if significant resistance is encountered, do not force the installation. Instead, check whether there are issues such as inaccurate installation position, overly tight fit, or foreign matter obstruction, and make timely adjustments and clean-ups.\n2、Usage Precautions:\nAvoid operating the bearing under conditions exceeding its rated load. Regularly check the operating status of the equipment. If abnormal noise, vibration, or overheating is detected, immediately stop the machine and check to identify the cause of the fault and prevent further deterioration of the problem.\nDuring use, try to avoid the bearing from being eroded by liquids such as water and oil. If unavoidable contact with liquids occurs, perform cleaning and drying treatment in a timely manner and apply an appropriate amount of rust inhibitor to protect the surface and internal structure of the bearing.\nFor equipment that is not in use for a long time, it is recommended to rotate and maintain the bearing regularly to prevent local indentations or corrosion between the balls and raceways due to long-term inactivity, which may affect the performance and service life of the bearing.\n3、Maintenance and Care:\nDepending on the frequency of use and the working environment, clean and lubricate the bearing regularly. Use a clean lint-free cloth or a special bearing cleaner to wipe the surface of the bearing to remove dirt and impurities, and then apply an appropriate amount of high-performance grease to ensure a good lubricating film is formed between the balls and raceways, reducing friction and wear.\nRegularly check the sealing condition of the bearing. If the seal is found to be aged, damaged, or ineffective, replace it in a timely manner to prevent dust, moisture, and other impurities from entering the bearing and affecting its normal operation and service life.\nWhen performing maintenance or repair on the equipment and if it is necessary to disassemble the bearing, use the correct disassembly method and tools to avoid unnecessary damage to the bearing. After disassembly, conduct a comprehensive inspection and evaluation of the bearing and decide whether it needs to be repaired or replaced based on its wear 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#333; margin-bottom: 20px;\"\u003e📏 Precision Specifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; background: #fff; box-shadow: 0 2px 8px rgba(0,0,0,0.1);\"\u003e\n\u003cthead style=\"background: #2a6496; color: #fff;\"\u003e\n\u003ctr\u003e\n\u003cth style=\"padding: 15px;\"\u003eParameter\u003c\/th\u003e\n\u003cth style=\"padding: 15px;\"\u003eValue\u003c\/th\u003e\n\u003cth style=\"padding: 15px;\"\u003eTolerance\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"border-bottom: 1px solid #eee;\"\u003e\n\u003ctd style=\"padding: 12px;\"\u003ePressure Angle\u003c\/td\u003e\n\u003ctd style=\"padding: 12px;\"\u003e20°\u003c\/td\u003e\n\u003ctd style=\"padding: 12px;\"\u003e±0.25°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #eee;\"\u003e\n\u003ctd style=\"padding: 12px;\"\u003eTooth Width\u003c\/td\u003e\n\u003ctd style=\"padding: 12px;\"\u003e10mm\u003c\/td\u003e\n\u003ctd style=\"padding: 12px;\"\u003e±0.02mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #eee;\"\u003e\n\u003ctd style=\"padding: 12px;\"\u003eRunout\u003c\/td\u003e\n\u003ctd style=\"padding: 12px;\"\u003e0.03mm\u003c\/td\u003e\n\u003ctd style=\"padding: 12px;\"\u003eMAX\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c!-- 应用领域 --\u003e\n\u003cdiv style=\"margin-bottom: 30px;\"\u003e\n\u003ch2 style=\"font-size: 24px; color: #333; margin-bottom: 15px;\"\u003e🏭 Industrial Applications\u003c\/h2\u003e\n\u003cdiv style=\"columns: 2;\"\u003e\n\u003cul style=\"list-style: none; padding-left: 0;\"\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e✅ Robotic Joints\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e✅ CNC Index Tables\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e✅ Packaging Machinery\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul style=\"list-style: none; padding-left: 0;\"\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e✅ Automotive Transmissions\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e✅ 3D Printing Rotary Stage\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e✅ Industrial Conveyors\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"HomeDIYer","offers":[{"title":"8mm \/ 45 Teeth \/ Left Spiral","offer_id":50785586610450,"sku":"GFCD04107","price":14.3,"currency_code":"USD","in_stock":true},{"title":"10mm \/ 45 Teeth \/ Left Spiral","offer_id":50785586643218,"sku":"GFCD04108","price":14.23,"currency_code":"USD","in_stock":true},{"title":"12mm \/ 45 Teeth \/ Left Spiral","offer_id":50785586675986,"sku":"GFCD04109","price":14.14,"currency_code":"USD","in_stock":true},{"title":"12mm \/ keyway 4*1.8 mm \/ 45 Teeth \/ Left Spiral","offer_id":50785586708754,"sku":"GFCD04110","price":14.58,"currency_code":"USD","in_stock":true},{"title":"14mm \/ keyway 5*2.3 mm \/ 45 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Spiral","offer_id":50785587724562,"sku":"GFCD04141","price":80.46,"currency_code":"USD","in_stock":true},{"title":"14mm \/ keyway 5*2.3 mm \/ 48 Teeth \/ Right Spiral","offer_id":50785587757330,"sku":"GFCD04142","price":79.95,"currency_code":"USD","in_stock":true},{"title":"15mm \/ keyway 5*2.3 mm \/ 48 Teeth \/ Right Spiral","offer_id":50785587790098,"sku":"GFCD04143","price":79.66,"currency_code":"USD","in_stock":true},{"title":"17mm \/ keyway 5*2.3 mm \/ 48 Teeth \/ Right Spiral","offer_id":50785587822866,"sku":"GFCD04144","price":79.04,"currency_code":"USD","in_stock":true},{"title":"18mm \/ keyway 6*2.8 mm \/ 48 Teeth \/ Right Spiral","offer_id":50785587855634,"sku":"GFCD04145","price":78.7,"currency_code":"USD","in_stock":true},{"title":"19mm \/ keyway 6*2.8 mm \/ 48 Teeth \/ Right Spiral","offer_id":50785587888402,"sku":"GFCD04146","price":78.33,"currency_code":"USD","in_stock":true},{"title":"20mm \/ keyway 6*2.8 mm \/ 48 Teeth \/ Right 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Spiral","offer_id":50785589690642,"sku":"GFCD04201","price":22.61,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/1_1_f7a31a25-d22f-4c6e-88de-53945fc4530b.jpg?v=1762199059"},{"product_id":"1-mod-45-helical-gear-65-80t-heavy-duty","title":"1 MOD 45° Helical Gear 65-80T Heavy Duty","description":"\u003cdiv class=\"product-description\"\u003e\n\u003c!-- 主标题模块 --\u003e\n\u003ch1 style=\"font-size: 28px; border-bottom: 2px solid #2a6496; padding-bottom: 12px; margin-bottom: 30px;\"\u003e1 MOD 45° Heavy-Duty Helical Gear \u003cspan style=\"display: block; font-size: 20px; color: #666; margin-top: 8px;\"\u003e65-80 Teeth | A-Type Left\/Right Hand | 45# Alloy Steel\u003c\/span\u003e\n\u003c\/h1\u003e\n\u003c!-- 核心参数矩阵 --\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(280px,1fr)); gap: 20px; margin-bottom: 35px;\" class=\"spec-grid\"\u003e\n\u003cdiv style=\"background: #f8f9fa; padding: 20px; border-radius: 8px;\"\u003e\n\u003ch3 style=\"color: #2a6496; margin: 0 0 12px;\"\u003e⚙️ Gear Profile\u003c\/h3\u003e\n\u003cul style=\"list-style: none; padding-left: 0; margin: 0;\"\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e• Module: 1 MOD\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e• Teeth Range: 65-80T\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e• Step Height: 8mm±0.03mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f8f9fa; padding: 20px; border-radius: 8px;\"\u003e\n\u003ch3 style=\"color: #2a6496; margin: 0 0 12px;\"\u003e🔩 Enhanced Specs\u003c\/h3\u003e\n\u003cul style=\"list-style: none; padding-left: 0; margin: 0;\"\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e• Surface Hardness: 52-55HRC\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e• Torque Rating: 280N·m\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e• AGMA Class 8 Standard\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- 性能优势模块 --\u003e\n\u003cdiv style=\"margin-bottom: 35px;\" class=\"performance\"\u003e\n\u003ch2 style=\"font-size: 24px; color: #333; margin-bottom: 20px;\"\u003e✅ Engineering Advantages\u003c\/h2\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(320px,1fr)); gap: 25px;\"\u003e\n\u003cdiv style=\"padding: 20px; background: #fff; box-shadow: 0 2px 12px rgba(0,0,0,0.08);\"\u003e\n\u003ch3 style=\"color: #2a6496; margin: 0 0 12px;\"\u003e🔄 Dual Helix Design\u003c\/h3\u003e\n\u003cp\u003eLeft\/right hand options for complex gear train configurations\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"padding: 20px; background: #fff; box-shadow: 0 2px 12px rgba(0,0,0,0.08);\"\u003e\n\u003ch3 style=\"color: #2a6496; margin: 0 0 12px;\"\u003e⚡ 0.025mm Runout\u003c\/h3\u003e\n\u003cp\u003ePrecision ground teeth with ≤0.025mm radial eccentricity\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"padding: 20px; background: #fff; box-shadow: 0 2px 12px rgba(0,0,0,0.08);\"\u003e\n\u003ch3 style=\"color: #2a6496; margin: 0 0 12px;\"\u003e🔊 Silent Transmission\u003c\/h3\u003e\n\u003cp\u003e45° helix angle reduces noise to ≤62dB at 1500rpm\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- 增强技术参数表 --\u003e\n\u003cdiv style=\"margin-bottom: 35px;\"\u003e\n\u003ch2 style=\"font-size: 24px; color: #333; margin-bottom: 20px;\"\u003e📏 Precision Manufacturing Data\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; background: #fff; box-shadow: 0 2px 8px rgba(0,0,0,0.1);\"\u003e\n\u003cthead style=\"background: #2a6496; color: #fff;\"\u003e\n\u003ctr\u003e\n\u003cth style=\"padding: 12px;\"\u003eParameter\u003c\/th\u003e\n\u003cth style=\"padding: 12px;\"\u003eSpecification\u003c\/th\u003e\n\u003cth style=\"padding: 12px;\"\u003eAGMA Standard\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"border-bottom: 1px solid #eee;\"\u003e\n\u003ctd style=\"padding: 12px;\"\u003eTooth Profile Error\u003c\/td\u003e\n\u003ctd style=\"padding: 12px;\"\u003e≤0.015mm\u003c\/td\u003e\n\u003ctd style=\"padding: 12px;\"\u003eClass 8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #eee;\"\u003e\n\u003ctd style=\"padding: 12px;\"\u003eLead Deviation\u003c\/td\u003e\n\u003ctd style=\"padding: 12px;\"\u003e±0.02mm\/100mm\u003c\/td\u003e\n\u003ctd style=\"padding: 12px;\"\u003eClass 7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #eee;\"\u003e\n\u003ctd style=\"padding: 12px;\"\u003eSurface Roughness\u003c\/td\u003e\n\u003ctd style=\"padding: 12px;\"\u003eRa 0.8μm\u003c\/td\u003e\n\u003ctd style=\"padding: 12px;\"\u003eClass 9\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c!-- 重型应用模块 --\u003e\n\u003cdiv style=\"background: #fff4e6; padding: 25px; border-radius: 8px; margin-bottom: 30px;\" class=\"heavy-duty-apps\"\u003e\n\u003ch2 style=\"font-size: 24px; color: #333; margin-bottom: 20px;\"\u003e🏭 Heavy-Duty Applications\u003c\/h2\u003e\n\u003cdiv style=\"columns: 2;\"\u003e\n\u003cul style=\"list-style: none; padding-left: 0;\"\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e✅ Mining Conveyors\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e✅ Wind Turbine Pitch Drives\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e✅ Steel Rolling Mills\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul style=\"list-style: none; padding-left: 0;\"\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e✅ Marine Gearboxes\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e✅ Hydraulic Power Units\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e✅ Tunnel Boring Machines\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"HomeDIYer","offers":[{"title":"14mm \/ keyway 5*2.3 mm \/ 65 Teeth \/ Left Spiral","offer_id":50785590149394,"sku":"GFCD04202","price":26.92,"currency_code":"USD","in_stock":true},{"title":"15mm \/ keyway 5*2.3 mm \/ 65 Teeth \/ Left Spiral","offer_id":50785590182162,"sku":"GFCD04203","price":26.86,"currency_code":"USD","in_stock":true},{"title":"17mm \/ keyway 5*2.3 mm \/ 65 Teeth \/ Left Spiral","offer_id":50785590214930,"sku":"GFCD04204","price":26.74,"currency_code":"USD","in_stock":true},{"title":"18mm \/ keyway 6*2.8 mm \/ 65 Teeth \/ Left Spiral","offer_id":50785590247698,"sku":"GFCD04205","price":26.67,"currency_code":"USD","in_stock":true},{"title":"19mm \/ keyway 6*2.8 mm \/ 65 Teeth \/ Left Spiral","offer_id":50785590280466,"sku":"GFCD04206","price":26.6,"currency_code":"USD","in_stock":true},{"title":"20mm \/ keyway 6*2.8 mm \/ 65 Teeth \/ Left Spiral","offer_id":50785590313234,"sku":"GFCD04207","price":26.52,"currency_code":"USD","in_stock":true},{"title":"14mm \/ keyway 5*2.3 mm \/ 65 Teeth \/ Right Spiral","offer_id":50785590346002,"sku":"GFCD04208","price":26.92,"currency_code":"USD","in_stock":true},{"title":"15mm \/ keyway 5*2.3 mm \/ 65 Teeth \/ Right Spiral","offer_id":50785590378770,"sku":"GFCD04209","price":26.86,"currency_code":"USD","in_stock":true},{"title":"17mm \/ keyway 5*2.3 mm \/ 65 Teeth \/ Right Spiral","offer_id":50785590411538,"sku":"GFCD04210","price":26.74,"currency_code":"USD","in_stock":true},{"title":"18mm \/ keyway 6*2.8 mm \/ 65 Teeth \/ Right Spiral","offer_id":50785590444306,"sku":"GFCD04211","price":26.67,"currency_code":"USD","in_stock":true},{"title":"19mm \/ keyway 6*2.8 mm \/ 65 Teeth \/ Right Spiral","offer_id":50785590477074,"sku":"GFCD04212","price":26.6,"currency_code":"USD","in_stock":true},{"title":"20mm \/ keyway 6*2.8 mm \/ 65 Teeth \/ Right Spiral","offer_id":50785590509842,"sku":"GFCD04213","price":26.52,"currency_code":"USD","in_stock":true},{"title":"14mm \/ keyway 5*2.3 mm \/ 70 Teeth \/ Left Spiral","offer_id":50785590542610,"sku":"GFCD04214","price":30.6,"currency_code":"USD","in_stock":true},{"title":"15mm \/ keyway 5*2.3 mm \/ 70 Teeth \/ Left Spiral","offer_id":50785590575378,"sku":"GFCD04215","price":30.54,"currency_code":"USD","in_stock":true},{"title":"17mm \/ keyway 5*2.3 mm \/ 70 Teeth \/ Left Spiral","offer_id":50785590608146,"sku":"GFCD04216","price":30.42,"currency_code":"USD","in_stock":true},{"title":"18mm \/ keyway 6*2.8 mm \/ 70 Teeth \/ Left Spiral","offer_id":50785590640914,"sku":"GFCD04217","price":30.35,"currency_code":"USD","in_stock":true},{"title":"19mm \/ keyway 6*2.8 mm \/ 70 Teeth \/ Left Spiral","offer_id":50785590673682,"sku":"GFCD04218","price":30.27,"currency_code":"USD","in_stock":true},{"title":"20mm \/ keyway 6*2.8 mm \/ 70 Teeth \/ Left Spiral","offer_id":50785590706450,"sku":"GFCD04219","price":30.2,"currency_code":"USD","in_stock":true},{"title":"14mm \/ keyway 5*2.3 mm \/ 70 Teeth \/ Right Spiral","offer_id":50785590739218,"sku":"GFCD04220","price":30.6,"currency_code":"USD","in_stock":true},{"title":"15mm \/ keyway 5*2.3 mm \/ 70 Teeth \/ Right Spiral","offer_id":50785590771986,"sku":"GFCD04221","price":30.54,"currency_code":"USD","in_stock":true},{"title":"17mm \/ keyway 5*2.3 mm \/ 70 Teeth \/ Right Spiral","offer_id":50785590804754,"sku":"GFCD04222","price":30.42,"currency_code":"USD","in_stock":true},{"title":"18mm \/ keyway 6*2.8 mm \/ 70 Teeth \/ Right Spiral","offer_id":50785590837522,"sku":"GFCD04223","price":30.35,"currency_code":"USD","in_stock":true},{"title":"19mm \/ keyway 6*2.8 mm \/ 70 Teeth \/ Right Spiral","offer_id":50785590870290,"sku":"GFCD04224","price":30.27,"currency_code":"USD","in_stock":true},{"title":"20mm \/ keyway 6*2.8 mm \/ 70 Teeth \/ Right Spiral","offer_id":50785590903058,"sku":"GFCD04225","price":30.2,"currency_code":"USD","in_stock":true},{"title":"10mm \/ 72 Teeth \/ Left Spiral","offer_id":50785590935826,"sku":"GFCD04226","price":30.39,"currency_code":"USD","in_stock":true},{"title":"12mm \/ keyway 4*1.8 mm \/ 72 Teeth \/ Left Spiral","offer_id":50785590968594,"sku":"GFCD04227","price":32.1,"currency_code":"USD","in_stock":true},{"title":"12mm \/ keyway 5*2.3 mm \/ 72 Teeth \/ Left Spiral","offer_id":50785591001362,"sku":"GFCD04228","price":32.1,"currency_code":"USD","in_stock":true},{"title":"14mm \/ keyway 5*2.3 mm \/ 72 Teeth \/ Left Spiral","offer_id":50785591034130,"sku":"GFCD04229","price":32.0,"currency_code":"USD","in_stock":true},{"title":"15mm \/ keyway 5*2.3 mm \/ 72 Teeth \/ Left Spiral","offer_id":50785591066898,"sku":"GFCD04230","price":31.94,"currency_code":"USD","in_stock":true},{"title":"16mm \/ keyway 5*2.3 mm \/ 72 Teeth \/ Left Spiral","offer_id":50785591099666,"sku":"GFCD04231","price":31.88,"currency_code":"USD","in_stock":true},{"title":"17mm \/ keyway 5*2.3 mm \/ 72 Teeth \/ Left Spiral","offer_id":50785591132434,"sku":"GFCD04232","price":31.82,"currency_code":"USD","in_stock":true},{"title":"18mm \/ keyway 6*2.8 mm \/ 72 Teeth \/ Left Spiral","offer_id":50785591165202,"sku":"GFCD04233","price":31.75,"currency_code":"USD","in_stock":true},{"title":"19mm \/ keyway 6*2.8 mm \/ 72 Teeth \/ Left Spiral","offer_id":50785591197970,"sku":"GFCD04234","price":31.68,"currency_code":"USD","in_stock":true},{"title":"20mm \/ keyway 6*2.8 mm \/ 72 Teeth \/ Left Spiral","offer_id":50785591230738,"sku":"GFCD04235","price":31.6,"currency_code":"USD","in_stock":true},{"title":"22mm \/ keyway 6*2.8 mm \/ 72 Teeth \/ Left Spiral","offer_id":50785591263506,"sku":"GFCD04236","price":31.43,"currency_code":"USD","in_stock":true},{"title":"24mm \/ keyway 8*3.3 mm \/ 72 Teeth \/ Left Spiral","offer_id":50785591296274,"sku":"GFCD04237","price":31.25,"currency_code":"USD","in_stock":true},{"title":"25mm \/ keyway 8*3.3 mm \/ 72 Teeth \/ Left Spiral","offer_id":50785591329042,"sku":"GFCD04238","price":31.16,"currency_code":"USD","in_stock":true},{"title":"10mm \/ 72 Teeth \/ Right Spiral","offer_id":50785591361810,"sku":"GFCD04239","price":31.75,"currency_code":"USD","in_stock":true},{"title":"12mm \/ 72 Teeth \/ Right Spiral","offer_id":50785591394578,"sku":"GFCD04240","price":31.66,"currency_code":"USD","in_stock":true},{"title":"12mm \/ keyway 4*1.8 mm \/ 72 Teeth \/ Right Spiral","offer_id":50785591427346,"sku":"GFCD04241","price":32.1,"currency_code":"USD","in_stock":true},{"title":"12mm \/ keyway 5*2.3 mm \/ 72 Teeth \/ Right Spiral","offer_id":50785591460114,"sku":"GFCD04242","price":32.1,"currency_code":"USD","in_stock":true},{"title":"14mm \/ keyway 5*2.3 mm \/ 72 Teeth \/ Right Spiral","offer_id":50785591492882,"sku":"GFCD04243","price":32.0,"currency_code":"USD","in_stock":true},{"title":"15mm \/ keyway 5*2.3 mm \/ 72 Teeth \/ Right Spiral","offer_id":50785591525650,"sku":"GFCD04244","price":31.94,"currency_code":"USD","in_stock":true},{"title":"16mm \/ keyway 5*2.3 mm \/ 72 Teeth \/ Right Spiral","offer_id":50785591558418,"sku":"GFCD04245","price":31.88,"currency_code":"USD","in_stock":true},{"title":"17mm \/ keyway 5*2.3 mm \/ 72 Teeth \/ Right Spiral","offer_id":50785591591186,"sku":"GFCD04246","price":31.82,"currency_code":"USD","in_stock":true},{"title":"18mm \/ keyway 6*2.8 mm \/ 72 Teeth \/ Right Spiral","offer_id":50785591623954,"sku":"GFCD04247","price":31.75,"currency_code":"USD","in_stock":true},{"title":"19mm \/ keyway 6*2.8 mm \/ 72 Teeth \/ Right Spiral","offer_id":50785591656722,"sku":"GFCD04248","price":31.68,"currency_code":"USD","in_stock":true},{"title":"20mm \/ keyway 6*2.8 mm \/ 72 Teeth \/ Right Spiral","offer_id":50785591689490,"sku":"GFCD04249","price":31.6,"currency_code":"USD","in_stock":true},{"title":"22mm \/ keyway 6*2.8 mm \/ 72 Teeth \/ Right Spiral","offer_id":50785591722258,"sku":"GFCD04250","price":31.43,"currency_code":"USD","in_stock":true},{"title":"24mm \/ keyway 8*3.3 mm \/ 72 Teeth \/ Right Spiral","offer_id":50785591755026,"sku":"GFCD04251","price":31.25,"currency_code":"USD","in_stock":true},{"title":"25mm \/ keyway 8*3.3 mm \/ 72 Teeth \/ Right Spiral","offer_id":50785591787794,"sku":"GFCD04252","price":31.16,"currency_code":"USD","in_stock":true},{"title":"14mm \/ keyway 5*2.3 mm \/ 80 Teeth \/ Left Spiral","offer_id":50785591820562,"sku":"GFCD04253","price":38.86,"currency_code":"USD","in_stock":true},{"title":"15mm \/ keyway 5*2.3 mm \/ 80 Teeth \/ Left Spiral","offer_id":50785591853330,"sku":"GFCD04254","price":38.8,"currency_code":"USD","in_stock":true},{"title":"16mm \/ keyway 5*2.3 mm \/ 80 Teeth \/ Left Spiral","offer_id":50785591886098,"sku":"GFCD04255","price":38.74,"currency_code":"USD","in_stock":true},{"title":"17mm \/ keyway 5*2.3 mm \/ 80 Teeth \/ Left Spiral","offer_id":50785591918866,"sku":"GFCD04256","price":38.67,"currency_code":"USD","in_stock":true},{"title":"18mm \/ keyway 6*2.8 mm \/ 80 Teeth \/ Left Spiral","offer_id":50785591951634,"sku":"GFCD04257","price":38.61,"currency_code":"USD","in_stock":true},{"title":"19mm \/ keyway 6*2.8 mm \/ 80 Teeth \/ Left Spiral","offer_id":50785591984402,"sku":"GFCD04258","price":38.53,"currency_code":"USD","in_stock":true},{"title":"20mm \/ keyway 6*2.8 mm \/ 80 Teeth \/ Left Spiral","offer_id":50785592017170,"sku":"GFCD04259","price":38.46,"currency_code":"USD","in_stock":true},{"title":"22mm \/ keyway 6*2.8 mm \/ 80 Teeth \/ Left Spiral","offer_id":50785592049938,"sku":"GFCD04260","price":38.29,"currency_code":"USD","in_stock":true},{"title":"24mm \/ keyway 8*3.3 mm \/ 80 Teeth \/ Left Spiral","offer_id":50785592082706,"sku":"GFCD04261","price":38.11,"currency_code":"USD","in_stock":true},{"title":"25mm \/ keyway 8*3.3 mm \/ 80 Teeth \/ Left Spiral","offer_id":50785592115474,"sku":"GFCD04262","price":38.02,"currency_code":"USD","in_stock":true},{"title":"14mm \/ keyway 5*2.3 mm \/ 80 Teeth \/ Right Spiral","offer_id":50785592148242,"sku":"GFCD04263","price":38.86,"currency_code":"USD","in_stock":true},{"title":"15mm \/ keyway 5*2.3 mm \/ 80 Teeth \/ Right Spiral","offer_id":50785592181010,"sku":"GFCD04264","price":38.8,"currency_code":"USD","in_stock":true},{"title":"16mm \/ keyway 5*2.3 mm \/ 80 Teeth \/ Right Spiral","offer_id":50785592213778,"sku":"GFCD04265","price":38.74,"currency_code":"USD","in_stock":true},{"title":"17mm \/ keyway 5*2.3 mm \/ 80 Teeth \/ Right Spiral","offer_id":50785592246546,"sku":"GFCD04266","price":38.67,"currency_code":"USD","in_stock":true},{"title":"18mm \/ keyway 6*2.8 mm \/ 80 Teeth \/ Right Spiral","offer_id":50785592279314,"sku":"GFCD04267","price":38.61,"currency_code":"USD","in_stock":true},{"title":"19mm \/ keyway 6*2.8 mm \/ 80 Teeth \/ Right Spiral","offer_id":50785592312082,"sku":"GFCD04268","price":38.53,"currency_code":"USD","in_stock":true},{"title":"20mm \/ keyway 6*2.8 mm \/ 80 Teeth \/ Right Spiral","offer_id":50785592344850,"sku":"GFCD04269","price":38.46,"currency_code":"USD","in_stock":true},{"title":"22mm \/ keyway 6*2.8 mm \/ 80 Teeth \/ Right Spiral","offer_id":50785592377618,"sku":"GFCD04270","price":38.29,"currency_code":"USD","in_stock":true},{"title":"24mm \/ keyway 8*3.3 mm \/ 80 Teeth \/ Right Spiral","offer_id":50785592410386,"sku":"GFCD04271","price":38.11,"currency_code":"USD","in_stock":true},{"title":"25mm \/ keyway 8*3.3 mm \/ 80 Teeth \/ Right Spiral","offer_id":50785592443154,"sku":"GFCD04272","price":38.02,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/1_1_fa6cbb1d-7f29-47ef-ae66-5d90fac7fa46.jpg?v=1762199059"},{"product_id":"tc-oil-seal-nitrile-rotary-shaft-seal-24-30mm","title":"TC Oil Seal Nitrile Rotary Shaft Seal 24-30mm ID","description":"\u003cdiv class=\"product-description\"\u003e\n\u003ch2 style=\"font-size: 24px; margin-bottom: 15px; color: #333;\"\u003eTC Oil Seal Nitrile Rotary Shaft Seal - Double Lipped Design\u003c\/h2\u003e\n\u003cdiv style=\"border: 1px solid #e1e1e1; padding: 20px; margin-bottom: 25px;\" class=\"specs-box\"\u003e\n\u003ch3 style=\"font-size: 20px; margin-bottom: 12px; color: #444;\"\u003e🔧 Technical Specifications\u003c\/h3\u003e\n\u003cul style=\"columns: 2; list-style: none; padding-left: 0;\"\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e✅ Material: Nitrile Rubber (NBR)\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e✅ Inner Diameter: 24mm-30mm\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e✅ Temperature Range: -30°C to +120°C\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e✅ Pressure Rating: Up to 0.5MPa\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e✅ Lip Design: Double Lipped\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e✅ Surface Hardness: 70±5 Shore A\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f8f9fa; padding: 25px; margin-bottom: 30px;\" class=\"key-features\"\u003e\n\u003ch3 style=\"font-size: 20px; margin-bottom: 15px; color: #444;\"\u003e🌟 Key Features\u003c\/h3\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 15px;\"\u003e\n\u003cdiv style=\"padding: 15px; background: white;\"\u003e\n\u003ch4 style=\"margin: 0 0 10px; color: #2a6496;\"\u003eDual Protection\u003c\/h4\u003e\n\u003cp\u003eDouble lip design ensures superior dust and fluid exclusion\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"padding: 15px; background: white;\"\u003e\n\u003ch4 style=\"margin: 0 0 10px; color: #2a6496;\"\u003ePremium Material\u003c\/h4\u003e\n\u003cp\u003eNitrile rubber offers excellent oil resistance and durability\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"padding: 15px; background: white;\"\u003e\n\u003ch4 style=\"margin: 0 0 10px; color: #2a6496;\"\u003eUniversal Fit\u003c\/h4\u003e\n\u003cp\u003e24-30mm ID range fits most standard rotating shafts\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 25px;\" class=\"applications\"\u003e\n\u003ch3 style=\"font-size: 20px; margin-bottom: 12px; color: #444;\"\u003e⚙️ Common Applications\u003c\/h3\u003e\n\u003cul style=\"columns: 2; list-style-type: square;\"\u003e\n\u003cli\u003eIndustrial pumps and compressors\u003c\/li\u003e\n\u003cli\u003eAutomotive transmission systems\u003c\/li\u003e\n\u003cli\u003eAgricultural machinery\u003c\/li\u003e\n\u003cli\u003eMarine equipment\u003c\/li\u003e\n\u003cli\u003eHydraulic cylinders\u003c\/li\u003e\n\u003cli\u003eElectric motors\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-left: 4px solid #2a6496; padding-left: 15px; margin-bottom: 20px;\" class=\"installation-tips\"\u003e\n\u003ch3 style=\"font-size: 20px; color: #444;\"\u003e📌 Professional Installation Tips\u003c\/h3\u003e\n\u003cp\u003e1. 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Sizing\u003c\/strong\u003e – Inner diameter (ID) 55-80 mm, outer diameters (OD) 70–150mm, thickness 7–15mm\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eExtreme Temperature Resistance\u003c\/strong\u003e – Operates from -40°C to +200°C without performance loss\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eChemical Resistant\u003c\/strong\u003e – Withstands oils, fuels, and corrosive chemicals\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eLong Service Life\u003c\/strong\u003e – Pre-lubricated design reduces wear and contamination\u003c\/li\u003e\n\u003cli\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003ch3\u003e🏭 Oil Seal and O-Ring Seal Ideal For\u003c\/h3\u003e\n\u003cul style=\"list-style: none; padding: 0;\"\u003e\n\u003cli\u003e🚜 Agricultural machinery\u003c\/li\u003e\n\u003cli\u003e🚗 Automotive engines \u0026amp; gearboxes\u003c\/li\u003e\n\u003cli\u003e⚙️ Hydraulic \u0026amp; pneumatic systems\u003c\/li\u003e\n\u003cli\u003e🏗️ Construction equipment\u003c\/li\u003e\n\u003cli\u003e🏭 Industrial pumps \u0026amp; motors\u003c\/li\u003e\n\u003cli\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003ch3\u003e📐 Technical Specifications\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; margin-top: 10px; height: 134.414px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 22.4023px;\"\u003e\n\u003ctd style=\"padding: 8px; border-bottom: 1px solid rgb(238, 238, 238); height: 22.4023px;\"\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border-bottom: 1px solid rgb(238, 238, 238); height: 22.4023px;\"\u003eMetal Skeleton + NBR\/FKM Rubber\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 22.4023px;\"\u003e\n\u003ctd style=\"padding: 8px; border-bottom: 1px solid rgb(238, 238, 238); height: 22.4023px;\"\u003e\u003cstrong\u003eInner Diameter (ID)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border-bottom: 1px solid rgb(238, 238, 238); height: 22.4023px;\"\u003e55-80 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 22.4023px;\"\u003e\n\u003ctd style=\"padding: 8px; border-bottom: 1px solid rgb(238, 238, 238); height: 22.4023px;\"\u003e\u003cstrong\u003eOuter Diameter (OD)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border-bottom: 1px solid rgb(238, 238, 238); height: 22.4023px;\"\u003e70mm -150mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 22.4023px;\"\u003e\n\u003ctd style=\"padding: 8px; border-bottom: 1px solid rgb(238, 238, 238); height: 22.4023px;\"\u003e\u003cstrong\u003eThickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border-bottom: 1px solid rgb(238, 238, 238); height: 22.4023px;\"\u003e7mm – 15mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 22.4023px;\"\u003e\n\u003ctd style=\"padding: 8px; border-bottom: 1px solid rgb(238, 238, 238); height: 22.4023px;\"\u003e\u003cstrong\u003eTemperature Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border-bottom: 1px solid rgb(238, 238, 238); height: 22.4023px;\"\u003e-40°C to +200°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 22.4023px;\"\u003e\n\u003ctd style=\"padding: 8px; border-bottom: 1px solid rgb(238, 238, 238); height: 22.4023px;\"\u003e\u003cstrong\u003eApplications\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border-bottom: 1px solid rgb(238, 238, 238); height: 22.4023px;\"\u003eShafts, pumps, gearboxes, motors, and industrial valves\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003ch3\u003e\u003c\/h3\u003e\n\u003ch3\u003e💡 Why Choose Our Oil Seal \u0026amp; O-Ring Seal?\u003c\/h3\u003e\n\u003cul style=\"list-style: none; padding: 0;\"\u003e\n\u003cli\u003e🔹 Industrial-grade materials for long-lasting reliability\u003c\/li\u003e\n\u003cli\u003e🔹 Resistant to wear, corrosion, and temperature extremes\u003c\/li\u003e\n\u003cli\u003e🔹 Versatile use across multiple industries\u003c\/li\u003e\n\u003cli\u003e🔹 Easy installation with pre-lubricated design\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- FAQ Section --\u003e\n\u003cdiv style=\"margin-top: 30px;\"\u003e\n\u003ch3 style=\"text-align: left;\"\u003e\u003c\/h3\u003e\n\u003ch3 style=\"text-align: left;\"\u003e Frequently Oil Seals \u0026amp; O-Ring Seals Asked Questions (FAQ)❓\u003c\/h3\u003e\n\u003cul style=\"list-style-type: none; padding-left: 0; max-width: 800px; margin: 0 auto;\"\u003e\n\u003cli style=\"margin-bottom: 15px;\"\u003e\n\u003cstrong\u003eQ1: What does \"dual-material\" mean in this oil seal?\u003c\/strong\u003e\u003cbr\u003eA: It means the seal uses a strong metal skeleton for structural support combined with flexible NBR or FKM rubber lips for an effective, leak-proof fit.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 15px;\"\u003e\n\u003cstrong\u003eQ2: Can these seals handle extreme temperatures?\u003c\/strong\u003e\u003cbr\u003eA: Yes. They work reliably from -40°C to +200°C, suitable for both cold climates and high-heat industrial environments.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 15px;\"\u003e\n\u003cstrong\u003eQ3: Are these oil seals resistant to chemicals?\u003c\/strong\u003e\u003cbr\u003eA: Absolutely. They are designed to withstand oils, fuels, and corrosive chemicals, making them ideal for heavy-duty applications.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 15px;\"\u003e\n\u003cstrong\u003eQ4: Do I need special tools for installation?\u003c\/strong\u003e\u003cbr\u003eA: No special tools are required. Standard mechanical tools work fine, and the pre-lubricated design ensures easy installation.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 15px;\"\u003e\n\u003cstrong\u003eQ5: Where are these seals commonly used?\u003c\/strong\u003e\u003cbr\u003eA: They are widely used in automotive engines, gearboxes, hydraulic systems, agricultural machinery, and industrial equipment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"HomeDIYer","offers":[{"title":"55x70x7mm \/ NBR","offer_id":50785610662162,"sku":"SHXJZC3649","price":15.48,"currency_code":"USD","in_stock":true},{"title":"55x70x8mm \/ NBR","offer_id":50785610694930,"sku":"SHXJZC3650","price":16.13,"currency_code":"USD","in_stock":true},{"title":"55x70x10mm \/ NBR","offer_id":50785610727698,"sku":"SHXJZC3651","price":18.52,"currency_code":"USD","in_stock":true},{"title":"55x70x12mm \/ 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Multi-Component Precision Fixation System\u003c\/p\u003e\n\u003cp\u003eThe SCS Split Shaft Collar Kit combines adjustable locking clamps, retaining rings, bearing retainers, and positioning rings into one versatile kit. This integrated design ensures precise shaft fixation, alignment, and limit control for machinery components, eliminating the need for multiple separate parts.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e2. High-Precision Adjustable Locking Mechanism\u003c\/p\u003e\n\u003cp\u003eEngineered with precision-machined split collars and locking clamps, this kit offers easy adjustment and secure clamping force for tight tolerances. The adjustable feature allows quick position adjustments on rotating shafts, ensuring reliable retention of pulleys, bearings, gears, and other mechanical parts.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e3. Durable High-Strength Material Construction\u003c\/p\u003e\n\u003cp\u003eConstructed from premium-grade carbon steel or alloy steel (depending on configuration), the kit withstands heavy loads, vibrations, and harsh industrial environments. The hardened surfaces and corrosion-resistant coatings ensure longevity and minimal wear, even under continuous operation.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e4. Universal Compatibility \u0026amp;amp;amp;amp;amp;amp;amp; Easy Installation\u003c\/p\u003e\n\u003cp\u003eDesigned for shaft diameters ranging from [specify range, e.g., 5mm–100mm], the kit accommodates diverse machinery applications. Its split design allows installation without disassembling the shaft, saving time and labor while maintaining alignment accuracy.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e5. Versatile Applications in Industrial Machinery\u003c\/p\u003e\n\u003cp\u003eIdeal for precision engineering, automation, robotics, and heavy machinery, the SCS Split Shaft Collar Kit provides critical positioning and retention for applications such as conveyor systems, pumps, turbines, and precision. It ensures reliable performance in high-speed, high-torque, or high-vibration environments.\u003c\/p\u003e","brand":"HomeDIYer","offers":[{"title":"3mm \/ Aluminum","offer_id":50785617379602,"sku":"SHXJZC0846","price":1.74,"currency_code":"USD","in_stock":true},{"title":"4mm \/ Aluminum","offer_id":50785617412370,"sku":"SHXJZC0847","price":1.77,"currency_code":"USD","in_stock":true},{"title":"5mm \/ Aluminum","offer_id":50785617445138,"sku":"SHXJZC0848","price":1.8,"currency_code":"USD","in_stock":true},{"title":"6mm \/ Aluminum","offer_id":50785617477906,"sku":"SHXJZC0849","price":1.56,"currency_code":"USD","in_stock":true},{"title":"8mm \/ Aluminum","offer_id":50785617510674,"sku":"SHXJZC0850","price":1.69,"currency_code":"USD","in_stock":true},{"title":"10mm \/ Aluminum","offer_id":50785617543442,"sku":"SHXJZC0851","price":2.05,"currency_code":"USD","in_stock":true},{"title":"12mm \/ Aluminum","offer_id":50785617576210,"sku":"SHXJZC0852","price":2.02,"currency_code":"USD","in_stock":true},{"title":"13mm \/ Aluminum","offer_id":50785617608978,"sku":"SHXJZC0853","price":2.01,"currency_code":"USD","in_stock":true},{"title":"14mm \/ Aluminum","offer_id":50785617641746,"sku":"SHXJZC0854","price":1.99,"currency_code":"USD","in_stock":true},{"title":"15mm \/ Aluminum","offer_id":50785617674514,"sku":"SHXJZC0855","price":2.43,"currency_code":"USD","in_stock":true},{"title":"16mm \/ Aluminum","offer_id":50785617707282,"sku":"SHXJZC0856","price":2.41,"currency_code":"USD","in_stock":true},{"title":"17mm \/ Aluminum","offer_id":50785617740050,"sku":"SHXJZC0857","price":2.59,"currency_code":"USD","in_stock":true},{"title":"18mm \/ Aluminum","offer_id":50785617772818,"sku":"SHXJZC0858","price":2.86,"currency_code":"USD","in_stock":true},{"title":"20mm \/ Aluminum","offer_id":50785617805586,"sku":"SHXJZC0859","price":2.82,"currency_code":"USD","in_stock":true},{"title":"22mm \/ Aluminum","offer_id":50785617838354,"sku":"SHXJZC0860","price":3.22,"currency_code":"USD","in_stock":true},{"title":"25mm \/ Aluminum","offer_id":50785617871122,"sku":"SHXJZC0861","price":3.11,"currency_code":"USD","in_stock":true},{"title":"28mm \/ Aluminum","offer_id":50785617903890,"sku":"SHXJZC0862","price":4.01,"currency_code":"USD","in_stock":true},{"title":"30mm \/ Aluminum","offer_id":50785617936658,"sku":"SHXJZC0863","price":4.44,"currency_code":"USD","in_stock":true},{"title":"32mm \/ Aluminum","offer_id":50785617969426,"sku":"SHXJZC0864","price":5.16,"currency_code":"USD","in_stock":true},{"title":"35mm \/ Aluminum","offer_id":50785618002194,"sku":"SHXJZC0865","price":22.17,"currency_code":"USD","in_stock":true},{"title":"40mm \/ Aluminum","offer_id":50785618034962,"sku":"SHXJZC0866","price":35.57,"currency_code":"USD","in_stock":true},{"title":"45mm \/ Aluminum","offer_id":50785618067730,"sku":"SHXJZC0867","price":56.68,"currency_code":"USD","in_stock":true},{"title":"50mm \/ Aluminum","offer_id":50785618100498,"sku":"SHXJZC0868","price":62.91,"currency_code":"USD","in_stock":true},{"title":"60mm \/ Aluminum","offer_id":50785618133266,"sku":"SHXJZC0869","price":73.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/1_1_1fefa135-fe67-4842-badb-938c7a3eefa0.jpg?v=1762199069"},{"product_id":"round-flange-router-shaft-linear-bushing-bearings-bearing-steel","title":"Round flange linear motion bearings LMF6\/8\/10\/12\/13\/16\/20\/25\/30\/35\/40\/50\/60UU","description":"\u003cp\u003eExtensive Size Compatibility: Available in models LMF6, LMF8, LMF10, LMF12, LMF13, LMF16, LMF20, LMF25, LMF30, LMF35, LMF40, LMF50, and LMF60UU, catering to diverse shaft diameters (6mm to 60mm) and load capacities \u003c\/p\u003e\n\u003cp\u003efor precision linear motion systems.\u003c\/p\u003e\n\u003cp\u003eRound Flange Mounting Design: The integrated circular flange ensures easy installation and secure alignment, ideal for applications requiring stability in CNC machines, robotic arms, and automated assembly lines.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eHigh-Strength Material Construction: Crafted from hardened high-carbon chromium steel or corrosion-resistant stainless steel, these bearings deliver durability, wear resistance, and long-term performance in harsh industrial environments.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eSealed \u0026amp;amp;amp;amp;amp;amp;amp;amp; Lubricated for Low Maintenance: Features double-lip rubber seals (UU designation) to block dust, debris, and moisture, paired with pre-applied grease for smooth, quiet operation and \u003cbr\u003ereduced friction.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eVersatile Industrial Applications: Perfect for 3D printers, medical imaging devices, packaging machinery, and semiconductor equipment where precise linear guidance and minimal backlash are critical.\u003c\/p\u003e","brand":"HomeDIYer","offers":[{"title":"LMF6UU \/ 6mmx12mmx19mm","offer_id":50785618886930,"sku":"SHXJZC5064","price":2.2,"currency_code":"USD","in_stock":true},{"title":"LMF8UU \/ 8mmx15mmx24mm","offer_id":50785618919698,"sku":"SHXJZC5065","price":2.64,"currency_code":"USD","in_stock":true},{"title":"LMF10UU \/ 10mmx19mmx29mm","offer_id":50785618952466,"sku":"SHXJZC5066","price":3.97,"currency_code":"USD","in_stock":true},{"title":"LMF12UU \/ 12mmx21mmx30mm","offer_id":50785618985234,"sku":"SHXJZC5067","price":4.17,"currency_code":"USD","in_stock":true},{"title":"LMF13UU \/ 13mmx23mmx32mm","offer_id":50785619018002,"sku":"SHXJZC5068","price":4.74,"currency_code":"USD","in_stock":true},{"title":"LMF16UU \/ 16mmx28mmx37mm","offer_id":50785619050770,"sku":"SHXJZC5069","price":5.75,"currency_code":"USD","in_stock":true},{"title":"LMF20UU \/ 20mmx32mmx42mm","offer_id":50785619083538,"sku":"SHXJZC5070","price":7.89,"currency_code":"USD","in_stock":true},{"title":"LMF25UU \/ 25mmx40mmx59mm","offer_id":50785619116306,"sku":"SHXJZC5071","price":13.74,"currency_code":"USD","in_stock":true},{"title":"LMF30UU \/ 30mmx45mmx64mm","offer_id":50785619149074,"sku":"SHXJZC5072","price":18.5,"currency_code":"USD","in_stock":true},{"title":"LMF35UU \/ 35mmx52mmx70mm","offer_id":50785619181842,"sku":"SHXJZC5073","price":25.76,"currency_code":"USD","in_stock":true},{"title":"LMF40UU \/ 40mmx60mmx80mm","offer_id":50785619214610,"sku":"SHXJZC5074","price":40.02,"currency_code":"USD","in_stock":true},{"title":"LMF50UU \/ 50mmx80mmx100mm","offer_id":50785619247378,"sku":"SHXJZC5075","price":83.27,"currency_code":"USD","in_stock":true},{"title":"LMF60UU \/ 60mmx90mmx110mm","offer_id":50785619280146,"sku":"SHXJZC5076","price":113.18,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/GYJLT0715_5.jpg?v=1762199070"},{"product_id":"flexible-plum-spider-jaw-coupling-cnc-shaft-coupler-stepper-all-bore-sizes","title":"Flexible Plum Spider Jaw Coupling CNC Shaft Coupler Stepper All Bore Sizes","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eFlexible Plum Spider Jaw Coupling — Precision Shaft Connection for CNC \u0026amp; Stepper Motor Builds\u003c\/h2\u003e\n\u003cp\u003eWhen shaft misalignment causes vibration, noise, or premature wear in your CNC router, 3D printer, or stepper motor drive system, the coupling is often the first component to fail. Engineers, makers, and machine builders who demand reliable torque transmission without rigid stress concentration need a coupling that flexibly compensates for angular, parallel, and axial misalignment — that's exactly what this flexible plum spider jaw coupling is designed to do.\u003c\/p\u003e\n\u003cp\u003eEach coupler consists of two precision-machined aluminum alloy hubs and a polyurethane spider insert (plum-shaped elastomer). The hubs are available in outer diameters from 20mm to 40mm (~0.79\" to 1.57\") and lengths from 25mm to 55mm (~0.98\" to 2.17\"). Bore combinations span 4mm through 19mm (~0.16\" to 0.75\") on each side, with same-bore and mixed-bore configurations available to match your exact shaft pairing.\u003c\/p\u003e\n\u003cp\u003eTypical use cases include CNC axis drives requiring low-backlash shaft coupling, stepper motor to leadscrew connections in 3D printers and laser engravers, and servo motor coupling in light industrial automation where vibration damping is critical for positional accuracy.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e⚙️\u003c\/span\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Fits stepper motors, servo motors, DC motors, and leadscrews with shaft diameters from 4mm to 19mm. Compatible with NEMA 17, NEMA 23, and similar frame motors. Verify your shaft diameters before selecting a variant.\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These Flexible Plum Spider Jaw Couplings\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-icon\"\u003e🔩\u003c\/div\u003e\n\u003cstrong\u003eDual Aluminum Alloy Hubs\u003c\/strong\u003e\n\u003cp\u003eMachined aluminum hubs deliver a strong, lightweight grip on both shafts. Clamping screws secure each hub independently, allowing quick installation and removal without special tools.\u003c\/p\u003e\n\u003cdiv class=\"hdiy-icon\"\u003e🌀\u003c\/div\u003e\n\u003cstrong\u003ePolyurethane Spider Insert\u003c\/strong\u003e\n\u003cp\u003eThe elastomeric plum spider absorbs shock loads and dampens vibration between hubs, protecting motor bearings and reducing resonance in precision motion systems.\u003c\/p\u003e\n\u003cdiv class=\"hdiy-icon\"\u003e📐\u003c\/div\u003e\n\u003cstrong\u003eWide Bore Size Range\u003c\/strong\u003e\n\u003cp\u003eAvailable in mixed and matched bore combinations from 4mm to 19mm per side, covering the most common stepper and servo motor shaft diameters in a single product line.\u003c\/p\u003e\n\u003cdiv class=\"hdiy-icon\"\u003e🔄\u003c\/div\u003e\n\u003cstrong\u003eMisalignment Compensation\u003c\/strong\u003e\n\u003cp\u003eAccommodates angular misalignment (typically up to 1°), parallel offset, and axial displacement — reducing stress on motor shafts and bearings during operation.\u003c\/p\u003e\n\u003cdiv class=\"hdiy-icon\"\u003e🛡️\u003c\/div\u003e\n\u003cstrong\u003eCorrosion-Resistant Construction\u003c\/strong\u003e\n\u003cp\u003eAluminum hubs with natural or anodized finish resist oxidation in workshop and light industrial environments. The polyurethane spider is oil- and grease-resistant for long service life.\u003c\/p\u003e\n\u003cdiv class=\"hdiy-icon\"\u003e⚡\u003c\/div\u003e\n\u003cstrong\u003eLow Backlash Design\u003c\/strong\u003e\n\u003cp\u003eThe jaw-and-spider engagement geometry minimizes rotational play, making these couplers suitable for CNC positioning axes and closed-loop stepper systems where accuracy matters.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — Plum Spider Jaw Shaft Coupler\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eCoupler Type\u003c\/th\u003e\n\u003ctd\u003eFlexible Jaw (Plum Spider \/ Oldham-style)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHub Material\u003c\/th\u003e\n\u003ctd\u003eAluminum Alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSpider Insert Material\u003c\/th\u003e\n\u003ctd\u003ePolyurethane (PU) Elastomer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOuter Diameter (OD)\u003c\/th\u003e\n\u003ctd\u003eD20mm – D40mm (0.79\" – 1.57\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCoupler Length\u003c\/th\u003e\n\u003ctd\u003eL25mm – L55mm (0.98\" – 2.17\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Diameter Range\u003c\/th\u003e\n\u003ctd\u003e4mm – 19mm per side (0.16\" – 0.75\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Configuration\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFastening Method\u003c\/th\u003e\n\u003ctd\u003eSet screw (clamping)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAngular Misalignment Tolerance\u003c\/th\u003e\n\u003ctd\u003eTypically up to 1°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eQuantity per Order\u003c\/th\u003e\n\u003ctd\u003e1 piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-faq\"\u003e\n\u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I choose the right coupler dimension and bore size?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eSelect the Coupler Dimension (OD × Length) based on the physical space available in your build — larger OD couplers handle higher torque. Then select the Shaft Diameter option that matches your motor shaft on one side and your leadscrew or driven shaft on the other. Both values must match your actual shaft diameters exactly for a secure fit.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan this coupler connect two shafts of different diameters?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. Many variants in this listing are specifically designed for mixed-bore configurations — for example, 4mm to 10mm or 6mm to 8mm. Select the Shaft Diameter option that lists your two shaft sizes. If you need a combination not shown, contact us to confirm availability.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow strong is the connection — will the coupler slip under load?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThe aluminum hubs use set screws to clamp firmly onto each shaft. For added security, ensure the set screw seats against a flat on the motor shaft if one is present. The polyurethane spider transmits torque through jaw engagement, not friction alone, so the connection remains positive under normal CNC and stepper motor loads.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs this coupler corrosion-resistant for use in humid or outdoor environments?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThe aluminum alloy hubs resist oxidation well in typical workshop and indoor industrial conditions. The polyurethane spider is resistant to oils and greases. For prolonged outdoor or high-humidity exposure, consider applying a light protective coating to the hubs. This coupler is not rated for submersion or highly corrosive chemical environments.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs this compatible with NEMA 17 and NEMA 23 stepper motors?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. NEMA 17 motors typically have 5mm shafts and NEMA 23 motors commonly use 6.35mm or 8mm shafts — all of which are covered by available bore options in this listing. Select the Shaft Diameter variant that matches your motor's output shaft diameter on one side and your leadscrew or coupling target on the other.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between a rigid coupling and this flexible jaw coupling?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eA rigid coupling requires near-perfect shaft alignment and transmits all vibration and shock directly between components. This flexible jaw coupling uses a polyurethane spider insert to absorb misalignment (angular, parallel, and axial) and dampen vibration, protecting motor bearings and reducing noise — making it the preferred choice for most CNC and 3D printer builds.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I replace just the spider insert if it wears out?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThe polyurethane spider insert is a separate component from the aluminum hubs. In many jaw coupling designs, the spider can be replaced independently without removing the hubs from the shafts. Contact us to confirm spider insert availability for your specific coupler size.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-cta\"\u003e\n🛒 Select your Coupler Dimension and Shaft Diameter above, then add to cart.\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I choose the right coupler dimension and bore size?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Select the Coupler Dimension (OD x Length) based on the physical space available in your build. Then select the Shaft Diameter option that matches your motor shaft on one side and your leadscrew or driven shaft on the other. Both values must match your actual shaft diameters exactly for a secure fit.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can this coupler connect two shafts of different diameters?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. Many variants are designed for mixed-bore configurations such as 4mm to 10mm or 6mm to 8mm. Select the Shaft Diameter option that lists your two shaft sizes.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How strong is the connection — will the coupler slip under load?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The aluminum hubs use set screws to clamp firmly onto each shaft. The polyurethane spider transmits torque through jaw engagement, not friction alone, so the connection remains positive under normal CNC and stepper motor loads.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is this coupler corrosion-resistant for use in humid or outdoor environments?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The aluminum alloy hubs resist oxidation well in typical workshop and indoor industrial conditions. The polyurethane spider is resistant to oils and greases. For prolonged outdoor or high-humidity exposure, consider applying a light protective coating to the hubs.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is this compatible with NEMA 17 and NEMA 23 stepper motors?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. NEMA 17 motors typically have 5mm shafts and NEMA 23 motors commonly use 6.35mm or 8mm shafts — all covered by available bore options. Select the Shaft Diameter variant that matches your motor output shaft.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the difference between a rigid coupling and this flexible jaw coupling?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"A rigid coupling requires near-perfect shaft alignment and transmits all vibration directly. This flexible jaw coupling uses a polyurethane spider insert to absorb misalignment and dampen vibration, protecting motor bearings and reducing noise.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I replace just the spider insert if it wears out?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The polyurethane spider insert is a separate component from the aluminum hubs and can typically be replaced independently without removing the hubs from the shafts. Contact us to confirm spider insert availability for your specific coupler size.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"HomeDIYer","offers":[{"title":"D20mm x L25mm \/ 10mm to 10mm","offer_id":52421708841234,"sku":"GY$$$BJT01187x1","price":16.88,"currency_code":"USD","in_stock":true},{"title":"D20mm x L25mm \/ 4mm to 10mm","offer_id":52421708874002,"sku":"GY$$$BJT01193x1","price":16.88,"currency_code":"USD","in_stock":true},{"title":"D20mm x L25mm \/ 5mm to 5mm","offer_id":52421708906770,"sku":"GY$$$BJT01180x1","price":16.88,"currency_code":"USD","in_stock":true},{"title":"D20mm x L25mm \/ 5mm to 8mm","offer_id":52421708939538,"sku":"GY$$$BJT01192x1","price":16.88,"currency_code":"USD","in_stock":true},{"title":"D20mm x L25mm \/ 6mm to 35mm","offer_id":52421708972306,"sku":"GY$$$BJT01186x1","price":16.88,"currency_code":"USD","in_stock":true},{"title":"D20mm x L25mm \/ 6mm to 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19mm","offer_id":52421710151954,"sku":"GY$$$BJT01262x1","price":26.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture2of9_c9142fa5-e140-4693-a47e-9f216be8f316.jpg?v=1783069236"},{"product_id":"flexible-plum-coupling-servo-motor-jaw-spider-shaft-coupler-cnc-3d-printer","title":"Flexible Plum Coupling Servo Motor Jaw Spider Shaft Coupler for CNC 3D Printer","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\n  \u003cdiv class=\"hdiy-overview\"\u003e\n    \u003ch2\u003eFlexible Plum Shaft Coupler — Precision Motion Control for CNC \u0026amp; 3D Printer Builds\u003c\/h2\u003e\n    \u003cp\u003eShaft misalignment is one of the most common causes of premature bearing wear, vibration noise, and lost positional accuracy in CNC routers, 3D printers, and servo-driven automation systems. Engineers, makers, and machine builders who demand tight tolerances need a coupler that compensates for angular, parallel, and axial misalignment without sacrificing torque transmission. This flexible plum coupling — also called a jaw spider shaft coupler — is engineered for exactly that job.\u003c\/p\u003e\n    \u003cp\u003eEach coupler consists of two aluminum alloy hubs and a polyurethane spider insert (plum-shaped elastomer). The hubs are precision-bored to accept shaft diameters ranging from 5 mm to 28 mm (approx. 0.20\"–1.10\"), with outer diameters spanning 20 mm to 55 mm (approx. 0.79\"–2.17\") and body lengths from 25 mm to 80 mm (approx. 0.98\"–3.15\"). Set screws lock each hub firmly onto the shaft. Variants with equal bore diameters (e.g., d6-6, d8-8) and reducing bore options (e.g., d15-18, d12-28) are available.\u003c\/p\u003e\n    \u003cp\u003eTypical use cases include stepper and servo motor coupling on CNC milling machines and laser engravers, lead-screw connections on Cartesian 3D printers such as Ender and Prusa-style frames, and flexible coupling for rotary encoders and pump drives where vibration damping is critical. Search terms like \"flexible jaw coupler for NEMA 23 motor,\" \"spider coupler CNC lead screw,\" and \"plum coupling 3D printer Z-axis\" describe exactly what this product solves.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-compat\"\u003e\n    \u003cspan class=\"hdiy-compat-icon\"\u003e⚙️\u003c\/span\u003e\n    Compatible with NEMA 17 \/ NEMA 23 stepper motors, servo motors, CNC routers, laser engravers, 3D printers (Cartesian \u0026amp; CoreXY), rotary encoders, and lead-screw assemblies. Verify shaft diameters before ordering.\n  \u003c\/div\u003e\n\n  \u003ch2\u003e✅ Key Features of These Flexible Plum Shaft Couplers\u003c\/h2\u003e\n  \u003cdiv class=\"hdiy-features\"\u003e\n\n    \u003cdiv\u003e\n      \u003cdiv class=\"hdiy-icon\"\u003e🔩\u003c\/div\u003e\n      \u003cstrong\u003eDual Aluminum Alloy Hubs\u003c\/strong\u003e\n      \u003cp\u003ePrecision-machined aluminum hubs deliver low rotational inertia and corrosion resistance, keeping your drivetrain responsive and rust-free over long service cycles.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv\u003e\n      \u003cdiv class=\"hdiy-icon\"\u003e🌀\u003c\/div\u003e\n      \u003cstrong\u003ePolyurethane Spider Insert\u003c\/strong\u003e\n      \u003cp\u003eThe elastomeric plum insert absorbs shock loads and dampens vibration, protecting downstream components like encoders and ball screws from impact fatigue.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv\u003e\n      \u003cdiv class=\"hdiy-icon\"\u003e📐\u003c\/div\u003e\n      \u003cstrong\u003eWide Size Range — 20 mm to 55 mm OD\u003c\/strong\u003e\n      \u003cp\u003e27 variants cover outer diameters from D20 to D55 and bore diameters from 5 mm to 28 mm, making it straightforward to match your motor shaft and driven shaft in one order.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv\u003e\n      \u003cdiv class=\"hdiy-icon\"\u003e↔️\u003c\/div\u003e\n      \u003cstrong\u003eMisalignment Compensation\u003c\/strong\u003e\n      \u003cp\u003eAccommodates angular misalignment (typically up to 1°), parallel offset, and axial displacement, reducing stress on motor bearings and extending machine life.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv\u003e\n      \u003cdiv class=\"hdiy-icon\"\u003e🔧\u003c\/div\u003e\n      \u003cstrong\u003eSet-Screw Clamping\u003c\/strong\u003e\n      \u003cp\u003eEach hub is secured with grub set screws for tool-free shaft swaps during maintenance or machine reconfiguration — no press-fit required.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv\u003e\n      \u003cdiv class=\"hdiy-icon\"\u003e🖨️\u003c\/div\u003e\n      \u003cstrong\u003eCNC \u0026amp; 3D Printer Ready\u003c\/strong\u003e\n      \u003cp\u003eSized and bored to match common NEMA 17 (5 mm shaft), NEMA 23 (6.35 mm shaft), and servo motor shaft standards used in hobbyist and professional CNC builds.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\n  \u003ch2\u003e📐 Technical Specifications — Flexible Jaw Spider Shaft Coupler\u003c\/h2\u003e\n  \u003cdiv class=\"hdiy-table-wrap\"\u003e\n    \u003ctable\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003cth\u003eProduct Type\u003c\/th\u003e\n\u003ctd\u003eFlexible Jaw (Plum \/ Spider) Shaft Coupler\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eHub Material\u003c\/th\u003e\n\u003ctd\u003eAluminum Alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eInsert Material\u003c\/th\u003e\n\u003ctd\u003ePolyurethane Elastomer (Spider \/ Plum)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eOuter Diameter (D)\u003c\/th\u003e\n\u003ctd\u003e20 mm – 55 mm (0.79\" – 2.17\")\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eBody Length (L)\u003c\/th\u003e\n\u003ctd\u003e25 mm – 80 mm (0.98\" – 3.15\")\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eBore Diameter (d)\u003c\/th\u003e\n\u003ctd\u003e5 mm – 28 mm (0.20\" – 1.10\") — See variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eBore Configuration\u003c\/th\u003e\n\u003ctd\u003eEqual bore \u0026amp; reducing bore variants available\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eClamping Method\u003c\/th\u003e\n\u003ctd\u003eSet Screw (Grub Screw)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eNatural Aluminum (anodized or brushed) — See variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eMisalignment Tolerance\u003c\/th\u003e\n\u003ctd\u003eAngular: typically ≤1°; Parallel: See variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003ctd\u003eCNC Router, 3D Printer, Servo \/ Stepper Motor, Lead Screw, Encoder\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eQuantity per Order\u003c\/th\u003e\n\u003ctd\u003e1 piece\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-faq\"\u003e\n    \u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eHow do I choose the right bore diameter for my motor and lead screw?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eCheck the shaft diameter of both your motor and the driven component (e.g., lead screw or encoder). Select a variant whose bore values match — for example, \"d6.35-6.35\" for a NEMA 23 motor paired with a 6.35 mm lead screw, or a reducing variant like \"d15-18\" when the two shafts differ in size. Measure with calipers before ordering to confirm.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat is the difference between equal-bore and reducing-bore variants?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eEqual-bore couplers (e.g., d8-8) have the same bore diameter on both hubs and are used when the motor shaft and driven shaft are the same size. Reducing-bore couplers (e.g., d12-28) have different bore diameters on each hub, allowing you to connect two shafts of different diameters without an adapter sleeve.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eHow strong is the polyurethane spider insert, and will it wear out quickly?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003ePolyurethane spider inserts are designed for continuous duty in light-to-medium torque applications typical of CNC and 3D printer drives. They resist oil, grease, and moderate heat. Under normal operating loads the insert outlasts many machine service intervals; however, if you notice increased backlash or cracking, the insert can be replaced independently without replacing the aluminum hubs.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eIs this coupler suitable for outdoor or high-humidity environments?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThe aluminum hubs offer good corrosion resistance in typical indoor workshop and light industrial environments. For prolonged outdoor or high-humidity exposure, applying a light coat of anti-corrosion spray to the hub exterior is recommended. The polyurethane insert itself is moisture-resistant and will not swell or degrade under normal humidity levels.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWill this coupler fit my NEMA 17 or NEMA 23 stepper motor?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eNEMA 17 motors typically have a 5 mm output shaft — select a variant with d5 bore. NEMA 23 motors commonly use a 6.35 mm (1\/4\") shaft — choose a d6.35 variant. Always verify your specific motor's datasheet, as some NEMA 23 motors ship with 8 mm or 10 mm shafts depending on the manufacturer.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eCan I use this coupler on a 3D printer Z-axis lead screw?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. This is one of the most common applications. The flexible spider insert compensates for the slight angular misalignment that often exists between a stepper motor shaft and a lead screw, reducing Z-axis wobble artifacts (\"Z-banding\") in prints. Match the bore to your motor shaft and lead screw diameter, and ensure the outer diameter fits within your printer's frame clearance.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eHow do I install and secure the coupler onto the shafts?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eSlide each hub onto its respective shaft, align the hubs so the spider insert seats evenly between the jaw fingers, then tighten the set screws with the appropriate hex key (typically 2–3 mm). Ensure the shaft end is flush with or slightly recessed from the inner face of the hub for maximum grip. Do not overtighten — snug and firm is sufficient to prevent slipping under normal torque loads.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-cta\"\u003e\n    🛒 Select your Diameter * Length * Aperture above, then add to cart.\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I choose the right bore diameter for my motor and lead screw?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Check the shaft diameter of both your motor and the driven component. Select a variant whose bore values match — for example, d6.35-6.35 for a NEMA 23 motor paired with a 6.35 mm lead screw, or a reducing variant like d15-18 when the two shafts differ in size. Measure with calipers before ordering to confirm.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the difference between equal-bore and reducing-bore variants?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Equal-bore couplers have the same bore diameter on both hubs and are used when the motor shaft and driven shaft are the same size. Reducing-bore couplers have different bore diameters on each hub, allowing you to connect two shafts of different diameters without an adapter sleeve.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How strong is the polyurethane spider insert, and will it wear out quickly?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Polyurethane spider inserts are designed for continuous duty in light-to-medium torque applications. They resist oil, grease, and moderate heat. The insert can be replaced independently without replacing the aluminum hubs if wear occurs.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is this coupler suitable for outdoor or high-humidity environments?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The aluminum hubs offer good corrosion resistance in typical indoor workshop environments. For prolonged outdoor or high-humidity exposure, applying a light coat of anti-corrosion spray is recommended. The polyurethane insert is moisture-resistant.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Will this coupler fit my NEMA 17 or NEMA 23 stepper motor?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"NEMA 17 motors typically have a 5 mm output shaft — select a d5 bore variant. NEMA 23 motors commonly use a 6.35 mm shaft — choose a d6.35 variant. Always verify your specific motor's datasheet as shaft sizes can vary.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I use this coupler on a 3D printer Z-axis lead screw?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. The flexible spider insert compensates for slight angular misalignment between a stepper motor shaft and a lead screw, reducing Z-axis wobble artifacts in prints. Match the bore to your motor shaft and lead screw diameter.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I install and secure the coupler onto the shafts?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Slide each hub onto its respective shaft, align the hubs so the spider insert seats evenly between the jaw fingers, then tighten the set screws with the appropriate hex key (typically 2–3 mm). Ensure the shaft end is flush with or slightly recessed from the inner face of the hub.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"HomeDIYer","offers":[{"title":"D20* L25* d5-5","offer_id":52421710184722,"sku":"LXDBJT02690x1","price":11.36,"currency_code":"USD","in_stock":true},{"title":"D20* L30* d6-6","offer_id":52421710217490,"sku":"LXDBJT02697x1","price":12.23,"currency_code":"USD","in_stock":true},{"title":"D20* L30* d6.35-6.35","offer_id":52421710250258,"sku":"LXDBJT02709x1","price":12.23,"currency_code":"USD","in_stock":true},{"title":"D25* L30* d6-6","offer_id":52421710283026,"sku":"LXDBJT02707x1","price":11.49,"currency_code":"USD","in_stock":true},{"title":"D25* L30* d6.35-6.35","offer_id":52421710315794,"sku":"LXDBJT02676x1","price":12.77,"currency_code":"USD","in_stock":true},{"title":"D30* L35* d6.35-6.35","offer_id":52421710348562,"sku":"LXDBJT02673x1","price":15.9,"currency_code":"USD","in_stock":true},{"title":"D30* L35* d8-8","offer_id":52421710381330,"sku":"LXDBJT02675x1","price":16.03,"currency_code":"USD","in_stock":true},{"title":"D30* L40* d8-8","offer_id":52421710414098,"sku":"LXDBJT02678x1","price":16.58,"currency_code":"USD","in_stock":true},{"title":"D30* L40* d12-12","offer_id":52421710446866,"sku":"LXDBJT02677x1","price":16.71,"currency_code":"USD","in_stock":true},{"title":"D30* L55* d6-6","offer_id":52421710479634,"sku":"LXDBJT02687x1","price":13.26,"currency_code":"USD","in_stock":true},{"title":"D40* L50* d15-18","offer_id":52421710512402,"sku":"LXDBJT02689x1","price":17.61,"currency_code":"USD","in_stock":true},{"title":"D40* L55* d8-8","offer_id":52421710545170,"sku":"LXDBJT02694x1","price":18.62,"currency_code":"USD","in_stock":true},{"title":"D40* L55* d10-10","offer_id":52421710577938,"sku":"LXDBJT02700x1","price":18.07,"currency_code":"USD","in_stock":true},{"title":"D40* L55* d12-12","offer_id":52421710610706,"sku":"LXDBJT02674x1","price":20.11,"currency_code":"USD","in_stock":true},{"title":"D40* L55* d14-14","offer_id":52421710643474,"sku":"LXDBJT02695x1","price":18.62,"currency_code":"USD","in_stock":true},{"title":"D40* L55* d17-17","offer_id":52421710676242,"sku":"LXDBJT02708x1","price":18.62,"currency_code":"USD","in_stock":true},{"title":"D40* L55* d18-18","offer_id":52421710709010,"sku":"LXDBJT02699x1","price":18.07,"currency_code":"USD","in_stock":true},{"title":"D40* L55* d19-19","offer_id":52421710741778,"sku":"LXDBJT02711x1","price":18.62,"currency_code":"USD","in_stock":true},{"title":"D40* L55* d20-20","offer_id":52421710774546,"sku":"LXDBJT02710x1","price":18.07,"currency_code":"USD","in_stock":true},{"title":"D40* L65* d14-14","offer_id":52421710807314,"sku":"LXDBJT02693x1","price":20.39,"currency_code":"USD","in_stock":true},{"title":"D40* L65* d15-15","offer_id":52421710840082,"sku":"LXDBJT02701x1","price":18.62,"currency_code":"USD","in_stock":true},{"title":"D40* L65* d16-16","offer_id":52421710872850,"sku":"LXDBJT02686x1","price":18.62,"currency_code":"USD","in_stock":true},{"title":"D40* L65* d19-19","offer_id":52421710905618,"sku":"LXDBJT02688x1","price":24.87,"currency_code":"USD","in_stock":true},{"title":"D40* L65* d20-20","offer_id":52421710938386,"sku":"LXDBJT02696x1","price":18.62,"currency_code":"USD","in_stock":true},{"title":"D40* L66* d16-16","offer_id":52421710971154,"sku":"LXDBJT02698x1","price":18.62,"currency_code":"USD","in_stock":true},{"title":"D40* L66* d17-17","offer_id":52421711003922,"sku":"LXDBJT02679x1","price":20.11,"currency_code":"USD","in_stock":true},{"title":"D55* L80* d12-28","offer_id":52421711036690,"sku":"LXDBJT02692x1","price":37.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture9of38_96be193c-ade3-442b-86f2-a810d04cd975.jpg?v=1783069271"},{"product_id":"d18-l25-rigid-shaft-coupling-cnc-motor-coupler-3d-printer","title":"D18*L25 Flexible Shaft Coupling Rigid CNC Motor Coupler 3D Printer 3\/4\/5\/6\/7\/8mm","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eD18*L25 Rigid Shaft Coupling — Zero-Backlash CNC Motor Coupler for Precision Motion Control\u003c\/h2\u003e\n\u003cp\u003eWhen even the slightest rotational play ruins a cut, a print, or a calibration run, engineers and makers need a coupling that transmits torque without compromise. The D18*L25 rigid shaft coupling is designed for CNC router builders, 3D printer enthusiasts, and automation technicians who demand exact shaft alignment and zero backlash in every axis.\u003c\/p\u003e\n\u003cp\u003eThis coupler features a one-piece aluminum alloy body measuring 18mm in outer diameter and 25mm in length (approximately 0.71 in × 0.98 in). Bore combinations range from 3mm to 8mm (approx. 0.12 in to 0.31 in) on each side, with both same-diameter and stepped-bore configurations available. Clamping is achieved via radial set screws for a firm, slip-resistant grip on each shaft end.\u003c\/p\u003e\n\u003cp\u003eTypical applications include connecting NEMA 17 and NEMA 23 stepper motor shafts to lead screws on CNC mills and laser engravers, coupling servo motor outputs to encoder shafts in robotics platforms, and linking motor shafts to ball screws in DIY linear actuator builds — all scenarios where a rigid shaft coupler for stepper motors outperforms flexible alternatives.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e⚙️\u003c\/span\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Fits NEMA 17 \/ NEMA 23 stepper motors, standard lead screws, ball screws, and encoder shafts with bore diameters from 3mm to 8mm (including 6.35mm \/ ¼ inch). Verify shaft diameters before ordering.\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These D18*L25 Rigid Shaft Couplings\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-list\"\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\n\u003cstrong\u003eZero-Backlash Rigid Design\u003c\/strong\u003e\n\u003cp\u003eOne-piece construction eliminates rotational play, ensuring direct torque transfer from motor shaft to lead screw with no lost motion.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\n\u003cstrong\u003eCompact D18 × L25mm Body\u003c\/strong\u003e\n\u003cp\u003eThe 18mm outer diameter and 25mm length fit into tight motor mounts and carriage assemblies where larger couplers cannot.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔧\u003c\/span\u003e\n\u003cstrong\u003eWide Bore Range (3–8mm)\u003c\/strong\u003e\n\u003cp\u003eAvailable in 28 bore combinations — same-diameter and stepped — covering the most common stepper motor and lead screw shaft sizes, including the 6.35mm (¼ in) imperial standard.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🏗️\u003c\/span\u003e\n\u003cstrong\u003eAluminum Alloy Construction\u003c\/strong\u003e\n\u003cp\u003eLightweight yet rigid aluminum alloy body resists deformation under continuous rotational load, keeping shaft alignment stable over long duty cycles.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔒\u003c\/span\u003e\n\u003cstrong\u003eSet Screw Clamping\u003c\/strong\u003e\n\u003cp\u003eRadial set screws on each bore end clamp firmly to the shaft, preventing axial slip during direction reversals and high-acceleration moves.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e\n\u003cstrong\u003eFlexible Quantity Options\u003c\/strong\u003e\n\u003cp\u003eOrder as a single piece for a repair or upgrade, or choose 5, 10, or 20-piece packs for machine builds, classroom kits, or workshop stock.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — Rigid Shaft Coupling\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eOuter Diameter (D)\u003c\/th\u003e\n\u003ctd\u003e18mm (approx. 0.71 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLength (L)\u003c\/th\u003e\n\u003ctd\u003e25mm (approx. 0.98 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Diameter (d1)\u003c\/th\u003e\n\u003ctd\u003e3mm – 8mm (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Diameter (d2)\u003c\/th\u003e\n\u003ctd\u003e3mm – 8mm (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Combinations\u003c\/th\u003e\n\u003ctd\u003e28 options including 6.35mm (¼ in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eAluminum alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCoupling Type\u003c\/th\u003e\n\u003ctd\u003eRigid (zero-backlash)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eClamping Method\u003c\/th\u003e\n\u003ctd\u003eRadial set screws\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMax Shaft Misalignment\u003c\/th\u003e\n\u003ctd\u003eDesigned for aligned shafts only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAvailable Quantities\u003c\/th\u003e\n\u003ctd\u003e1 \/ 5 \/ 10 \/ 20 pcs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-faq\"\u003e\n\u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between a rigid and a flexible shaft coupling?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eA rigid shaft coupling transmits torque with zero rotational play, making it ideal for CNC and 3D printer axes where positional accuracy is critical. A flexible coupling absorbs minor misalignment and vibration but introduces a small amount of backlash. If your shafts are precisely aligned, a rigid coupler delivers more accurate motion.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I choose the correct bore size for my motor and lead screw?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eMeasure the outer diameter of both your motor shaft and your lead screw or ball screw shaft with a caliper. Select the variant whose d1 matches your motor shaft and d2 matches your lead screw. Common NEMA 17 motor shafts are 5mm; common lead screws are 8mm. If one shaft is imperial (¼ in = 6.35mm), choose a variant that includes 6.35mm.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWill this coupler work with my NEMA 17 or NEMA 23 stepper motor?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. NEMA 17 motors typically have a 5mm output shaft, and NEMA 23 motors commonly use 6.35mm or 8mm shafts. Both are covered by the available bore combinations. Confirm your motor's shaft diameter in its datasheet before selecting a variant.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs this coupling suitable for high-speed or high-torque applications?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThis D18*L25 rigid coupler is well-suited for the torque and speed ranges typical of CNC routers, 3D printers, and light automation equipment. For very high-torque industrial drives or applications with significant shaft misalignment, consult the torque rating of your specific motor and verify that a rigid coupling is appropriate — misaligned shafts can cause bearing wear when using rigid couplers.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDoes aluminum corrode, and how should I maintain this coupler?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eAluminum alloy forms a natural oxide layer that resists corrosion in typical indoor workshop and machine environments. For humid or mildly corrosive environments, a light coat of machine oil on the exterior is sufficient. Keep the set screw threads clean and re-torque periodically if the machine experiences heavy vibration.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I install and secure the coupler to the shafts?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eSlide each shaft end into the corresponding bore until it reaches the center of the coupler body. Align the shafts as precisely as possible — rigid couplers do not compensate for misalignment. Tighten the set screws on each side with an appropriate hex key until firm. Avoid over-tightening, which can deform the bore or damage the shaft surface.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eShould I order a single piece or a multi-pack?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eIf you are replacing a single coupler or testing a design, the 1-piece option is the most economical starting point. For full machine builds with multiple axes, the 5 or 10-piece packs offer a lower per-unit cost. The 20-piece pack is suited for classroom kits, batch production, or workshop inventory.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-cta\"\u003e\n🛒 Select your Hole (d1 × d2) size and quantity above, then add to cart.\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the difference between a rigid and a flexible shaft coupling?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"A rigid shaft coupling transmits torque with zero rotational play, making it ideal for CNC and 3D printer axes where positional accuracy is critical. A flexible coupling absorbs minor misalignment and vibration but introduces a small amount of backlash. If your shafts are precisely aligned, a rigid coupler delivers more accurate motion.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I choose the correct bore size for my motor and lead screw?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Measure the outer diameter of both your motor shaft and your lead screw or ball screw shaft with a caliper. Select the variant whose d1 matches your motor shaft and d2 matches your lead screw. Common NEMA 17 motor shafts are 5mm; common lead screws are 8mm. If one shaft is imperial (1\/4 in = 6.35mm), choose a variant that includes 6.35mm.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Will this coupler work with my NEMA 17 or NEMA 23 stepper motor?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. NEMA 17 motors typically have a 5mm output shaft, and NEMA 23 motors commonly use 6.35mm or 8mm shafts. Both are covered by the available bore combinations. Confirm your motor's shaft diameter in its datasheet before selecting a variant.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is this coupling suitable for high-speed or high-torque applications?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"This D18*L25 rigid coupler is well-suited for the torque and speed ranges typical of CNC routers, 3D printers, and light automation equipment. For very high-torque industrial drives or applications with significant shaft misalignment, consult the torque rating of your specific motor and verify that a rigid coupling is appropriate.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Does aluminum corrode, and how should I maintain this coupler?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Aluminum alloy forms a natural oxide layer that resists corrosion in typical indoor workshop and machine environments. For humid or mildly corrosive environments, a light coat of machine oil on the exterior is sufficient. Keep the set screw threads clean and re-torque periodically if the machine experiences heavy vibration.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I install and secure the coupler to the shafts?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Slide each shaft end into the corresponding bore until it reaches the center of the coupler body. Align the shafts as precisely as possible. Tighten the set screws on each side with an appropriate hex key until firm. Avoid over-tightening, which can deform the bore or damage the shaft surface.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Should I order a single piece or a multi-pack?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"If you are replacing a single coupler or testing a design, the 1-piece option is the most economical starting point. For full machine builds with multiple axes, the 5 or 10-piece packs offer a lower per-unit cost. The 20-piece pack is suited for classroom kits, batch production, or workshop inventory.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"HomeDIYer","offers":[{"title":"3mm * 3mm \/ 1","offer_id":52421711069458,"sku":"LXDLIIIIU0001x1","price":4.75,"currency_code":"USD","in_stock":true},{"title":"3mm * 4mm \/ 1","offer_id":52421711102226,"sku":"LXDLIIIIU0002x1","price":4.75,"currency_code":"USD","in_stock":true},{"title":"3mm * 5mm \/ 1","offer_id":52421711134994,"sku":"LXDLIIIIU0003x1","price":4.75,"currency_code":"USD","in_stock":true},{"title":"3mm * 6mm \/ 1","offer_id":52421711167762,"sku":"LXDLIIIIU0004x1","price":4.75,"currency_code":"USD","in_stock":true},{"title":"3mm * 6.35mm \/ 1","offer_id":52421711200530,"sku":"LXDLIIIIU0005x1","price":4.75,"currency_code":"USD","in_stock":true},{"title":"3mm * 8mm \/ 1","offer_id":52421711233298,"sku":"LXDLIIIIU0006x1","price":4.75,"currency_code":"USD","in_stock":true},{"title":"4mm * 4mm \/ 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This flexible plum coupling is engineered for builders, machinists, and repair technicians who need a reliable, zero-backlash connection between two shafts of equal or different diameters.\u003c\/p\u003e\n\u003cp\u003eEach coupler features an aluminum alloy body (D45mm outer diameter) paired with a polyurethane spider insert that absorbs shock and dampens vibration. Two body lengths are available — L66mm (~2.60 in) and L78mm (~3.07 in) — with dual-bore hole combinations ranging from 6mm×6mm up to 25mm×25mm (approximately 0.24 in to 0.98 in per bore). The spider insert fits between the two jaw halves, providing flexible plum coupling performance without metal-to-metal contact.\u003c\/p\u003e\n\u003cp\u003eTypical use cases include CNC stepper motor shaft coupling for lead-screw drives, 3D printer Z-axis flexible coupler replacement, servo motor shaft connector for light-duty automation, and DIY lathe or milling machine flexible shaft adapter projects.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e⚙️\u003c\/span\u003e\n\u003cstrong\u003eCompatible with:\u003c\/strong\u003e NEMA 17 \/ NEMA 23 stepper motors, standard CNC lead screws, 3D printer Z-axis rods, servo motor shafts, and DIY motion control systems with shaft diameters 6–25mm.\n\u003c\/div\u003e\n\n\u003ch2\u003e✅ Key Features of These Flexible Plum Shaft Couplers\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\n\u003cstrong\u003eDual-Bore Precision Fit\u003c\/strong\u003e\n\u003cp\u003eAvailable in same-diameter and stepped-bore combinations (e.g., 6×6mm through 25×25mm), letting you connect shafts of different sizes without adapters.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🌀\u003c\/span\u003e\n\u003cstrong\u003ePolyurethane Spider Insert\u003c\/strong\u003e\n\u003cp\u003eThe plum-shaped elastomer spider absorbs shock loads and dampens torsional vibration, protecting motors and lead screws from impact damage.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\n\u003cstrong\u003eTwo Body Lengths: L66 \u0026amp; L78\u003c\/strong\u003e\n\u003cp\u003eChoose D45×L66mm (~2.60 in) for compact builds or D45×L78mm (~3.07 in) where additional flex travel or clearance is needed.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚡\u003c\/span\u003e\n\u003cstrong\u003eZero-Backlash Torque Transmission\u003c\/strong\u003e\n\u003cp\u003eThe jaw-and-spider design maintains consistent angular positioning, critical for CNC stepper motor shaft coupling and 3D printer Z-axis accuracy.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e\n\u003cstrong\u003eAluminum Alloy Body\u003c\/strong\u003e\n\u003cp\u003eLightweight yet rigid aluminum jaws resist corrosion and handle continuous rotational loads typical of stepper and servo motor applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔧\u003c\/span\u003e\n\u003cstrong\u003eSet-Screw Clamping\u003c\/strong\u003e\n\u003cp\u003eEach bore is secured with set screws for tool-free shaft changes during prototyping or maintenance — no press-fit required.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003ch2\u003e📐 Technical Specifications — Flexible Plum Shaft Coupler\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eOuter Diameter (D)\u003c\/th\u003e\n\u003ctd\u003e45mm (~1.77 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBody Length (L)\u003c\/th\u003e\n\u003ctd\u003e66mm (~2.60 in) or 78mm (~3.07 in) — see variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Hole Combination (d1 × d2)\u003c\/th\u003e\n\u003ctd\u003e6mm×6mm to 25mm×25mm — see variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBody Material\u003c\/th\u003e\n\u003ctd\u003eAluminum alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSpider Insert Material\u003c\/th\u003e\n\u003ctd\u003ePolyurethane (PU)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCoupling Type\u003c\/th\u003e\n\u003ctd\u003eJaw \/ Plum (spider) flexible coupling\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eClamping Method\u003c\/th\u003e\n\u003ctd\u003eSet screw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMax Recommended Speed\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eQuantity per Order\u003c\/th\u003e\n\u003ctd\u003e1 piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-faq\"\u003e\n\u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eHow do I choose the right bore hole combination?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eMeasure the shaft diameter of your motor (d1) and the shaft or lead screw it connects to (d2). Select the matching d1×d2 option from the dropdown. If both shafts are the same size, choose an equal-bore variant such as 8mm×8mm. If they differ, choose the stepped option, e.g., 6mm×8mm.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between the L66 and L78 body lengths?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThe L66 (66mm \/ ~2.60 in) version is suited for compact CNC and 3D printer frames where axial space is limited. The L78 (78mm \/ ~3.07 in) version provides slightly more spider travel and is preferred when greater angular misalignment compensation or additional clearance between motor face and lead screw nut is needed.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eCan this coupler handle angular and parallel shaft misalignment?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. The polyurethane spider insert accommodates minor angular misalignment (typically up to ~1°) and small parallel offsets. For best results, align shafts as closely as possible before installation — the coupler is designed to compensate for residual misalignment, not replace proper alignment.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eIs the spider insert replaceable if it wears out?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. The two aluminum jaw halves separate to allow the spider insert to be swapped without removing the coupler from the shafts. This makes maintenance straightforward in production or workshop environments.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWill this coupler work with NEMA 17 and NEMA 23 stepper motors?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eNEMA 17 motors typically have a 5mm shaft, and NEMA 23 motors commonly use 6.35mm (1\/4 in) or 8mm shafts. Check your motor's shaft diameter and select the matching bore option. The D45 outer diameter fits standard CNC and 3D printer frame clearances for both motor sizes.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eHow do I secure the coupler to the shaft?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eEach jaw half is secured with set screws. Insert the shaft into the bore until it reaches the correct depth, then tighten the set screw with an appropriate hex key. For high-torque applications, apply a small amount of thread-locking compound to the set screw threads to prevent loosening from vibration.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat torque can this coupling transmit?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eRated torque depends on bore size and operating speed. For typical CNC stepper motor and 3D printer Z-axis applications the transmitted torque is well within the coupler's capacity. Contact us to confirm specifications for high-torque or high-speed servo applications.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-cta\"\u003e\n🛒 Select your Hole (d1 × d2) and Size (D × L) above, then add to cart.\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I choose the right bore hole combination?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Measure the shaft diameter of your motor (d1) and the shaft or lead screw it connects to (d2). Select the matching d1×d2 option from the dropdown. If both shafts are the same size, choose an equal-bore variant such as 8mm×8mm. If they differ, choose the stepped option, e.g., 6mm×8mm.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the difference between the L66 and L78 body lengths?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The L66 (66mm \/ ~2.60 in) version is suited for compact CNC and 3D printer frames where axial space is limited. The L78 (78mm \/ ~3.07 in) version provides slightly more spider travel and is preferred when greater angular misalignment compensation or additional clearance is needed.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can this coupler handle angular and parallel shaft misalignment?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. The polyurethane spider insert accommodates minor angular misalignment (typically up to ~1°) and small parallel offsets. Align shafts as closely as possible before installation.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is the spider insert replaceable if it wears out?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. The two aluminum jaw halves separate to allow the spider insert to be swapped without removing the coupler from the shafts.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Will this coupler work with NEMA 17 and NEMA 23 stepper motors?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"NEMA 17 motors typically have a 5mm shaft, and NEMA 23 motors commonly use 6.35mm or 8mm shafts. Check your motor's shaft diameter and select the matching bore option.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I secure the coupler to the shaft?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Each jaw half is secured with set screws. Insert the shaft into the bore, then tighten the set screw with a hex key. For high-torque applications, apply thread-locking compound to prevent loosening.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What torque can this coupling transmit?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Rated torque depends on bore size and operating speed. For typical CNC stepper motor and 3D printer Z-axis applications the transmitted torque is well within the coupler's capacity. Contact us to confirm for high-torque or high-speed servo applications.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"HomeDIYer","offers":[{"title":"6mm * 6mm \/ D45 * L66 \/ 1","offer_id":52421714739474,"sku":"LXDLIIIIU1468x1","price":37.39,"currency_code":"USD","in_stock":true},{"title":"6mm * 7mm \/ D45 * L66 \/ 1","offer_id":52421714772242,"sku":"LXDLIIIIU1469x1","price":37.39,"currency_code":"USD","in_stock":true},{"title":"6mm * 8mm \/ D45 * L66 \/ 1","offer_id":52421714805010,"sku":"LXDLIIIIU1470x1","price":37.39,"currency_code":"USD","in_stock":true},{"title":"6mm * 9mm \/ D45 * L66 \/ 1","offer_id":52421714837778,"sku":"LXDLIIIIU1471x1","price":37.39,"currency_code":"USD","in_stock":true},{"title":"6mm * 10mm \/ D45 * L66 \/ 1","offer_id":52421714870546,"sku":"LXDLIIIIU1472x1","price":37.39,"currency_code":"USD","in_stock":true},{"title":"6mm * 11mm \/ D45 * L66 \/ 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L78 \/ 1","offer_id":52421722505490,"sku":"LXDLIIIIU1809x1","price":40.32,"currency_code":"USD","in_stock":true},{"title":"23mm * 25mm \/ D45 * L78 \/ 1","offer_id":52421722538258,"sku":"LXDLIIIIU1810x1","price":40.32,"currency_code":"USD","in_stock":true},{"title":"24mm * 24mm \/ D45 * L78 \/ 1","offer_id":52421722571026,"sku":"LXDLIIIIU1811x1","price":40.32,"currency_code":"USD","in_stock":true},{"title":"24mm * 25mm \/ D45 * L78 \/ 1","offer_id":52421722603794,"sku":"LXDLIIIIU1812x1","price":40.32,"currency_code":"USD","in_stock":true},{"title":"25mm * 25mm \/ D45 * L78 \/ 1","offer_id":52421722636562,"sku":"LXDLIIIIU1813x1","price":40.32,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture14of23_bcd1ddc7-48b5-4c8f-bb89-3ca8495a6565.jpg?v=1783069367"},{"product_id":"flexible-plum-spider-jaw-shaft-coupler-cnc-stepper-motor","title":"CNC Shaft Coupler Flexible Plum Spider Jaw Coupling Stepper Motor D14mm - 150mm","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\n  \u003cdiv class=\"hdiy-overview\"\u003e\n    \u003ch2\u003eCNC Shaft Coupler Flexible Plum Spider Jaw Coupling — Precision Motion for Every Build\u003c\/h2\u003e\n    \u003cp\u003eWhen shaft misalignment, vibration, or angular offset causes premature wear on your CNC machine, 3D printer, or stepper motor drive system, the weak link is almost always the coupling. Engineers, makers, and automation builders who demand reliable torque transmission without sacrificing flexibility need a coupling that can handle real-world imperfections — and that's exactly what this flexible plum spider jaw shaft coupler is designed to do.\u003c\/p\u003e\n    \u003cp\u003eEach coupler consists of two aluminum alloy hubs and a polyurethane (PU) spider insert. The hubs are precision-machined from 6061-T6 aluminum alloy with a natural anodized finish, offering a lightweight yet rigid structure. The PU spider element sits between the jaws of both hubs, absorbing shock and compensating for parallel, angular, and axial misalignment. Available in coupler body diameters from 14mm to 105mm (0.55\" to 4.13\") and lengths from 22mm to 140mm (0.87\" to 5.51\"), with bore shaft diameter ranges from 3mm to 60mm (0.12\" to 2.36\") depending on the selected variant.\u003c\/p\u003e\n    \u003cp\u003eTypical use cases include CNC router Z-axis and lead screw connections, NEMA 17\/23\/34 stepper motor shaft coupling for 3D printers and laser engravers, servo motor coupling in pick-and-place automation systems, and flexible shaft coupling for DIY robotics and linear actuator assemblies.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-compat\"\u003e\n    \u003cspan class=\"hdiy-compat-icon\"\u003e⚙️\u003c\/span\u003e\n    Compatible with CNC routers, 3D printers, laser engravers, stepper \u0026amp; servo motors, and linear actuator systems. Select your coupler dimension and shaft diameter from the variant options above.\n  \u003c\/div\u003e\n\n  \u003ch2\u003e✅ Key Features of These CNC Shaft Couplers\u003c\/h2\u003e\n  \u003cdiv class=\"hdiy-features\"\u003e\n\n    \u003cdiv\u003e\n      \u003cdiv class=\"hdiy-icon\"\u003e🔩\u003c\/div\u003e\n      \u003cstrong\u003eJaw Coupling Design\u003c\/strong\u003e\n      \u003cp\u003eThree-jaw interlocking hub geometry maximizes torque transfer while the PU spider insert absorbs shock loads and dampens vibration between connected shafts.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv\u003e\n      \u003cdiv class=\"hdiy-icon\"\u003e📐\u003c\/div\u003e\n      \u003cstrong\u003eWide Size Range\u003c\/strong\u003e\n      \u003cp\u003e22 variants spanning coupler OD from 14mm to 105mm and shaft bore from 3mm to 60mm — covering NEMA 17 through large-frame servo motor applications in a single product line.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv\u003e\n      \u003cdiv class=\"hdiy-icon\"\u003e🛡️\u003c\/div\u003e\n      \u003cstrong\u003eMisalignment Compensation\u003c\/strong\u003e\n      \u003cp\u003eAccommodates parallel misalignment up to typically 0.2–0.5mm, angular misalignment up to typically 1°–3°, and axial float, reducing bearing load and extending drivetrain life.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv\u003e\n      \u003cdiv class=\"hdiy-icon\"\u003e⚡\u003c\/div\u003e\n      \u003cstrong\u003eAluminum Alloy Hubs\u003c\/strong\u003e\n      \u003cp\u003ePrecision-machined 6061-T6 aluminum hubs deliver a high strength-to-weight ratio, corrosion resistance, and dimensional stability across a wide operating temperature range.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv\u003e\n      \u003cdiv class=\"hdiy-icon\"\u003e🔧\u003c\/div\u003e\n      \u003cstrong\u003eSet Screw Clamping\u003c\/strong\u003e\n      \u003cp\u003eEach hub is secured to the shaft via set screws, enabling tool-free shaft swaps and quick repositioning without permanent modification to the motor or lead screw shaft.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv\u003e\n      \u003cdiv class=\"hdiy-icon\"\u003e🔄\u003c\/div\u003e\n      \u003cstrong\u003eElectrically Isolating Spider\u003c\/strong\u003e\n      \u003cp\u003eThe polyurethane spider insert provides electrical isolation between the two hubs, protecting sensitive motor encoders and control electronics from ground loop interference.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\n  \u003ch2\u003e📐 Technical Specifications — Flexible Plum Spider Jaw Shaft Coupler\u003c\/h2\u003e\n  \u003cdiv class=\"hdiy-table-wrap\"\u003e\n    \u003ctable\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003cth\u003eCoupler Body Diameter (OD)\u003c\/th\u003e\n\u003ctd\u003e14mm – 105mm (0.55\" – 4.13\")\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eCoupler Body Length\u003c\/th\u003e\n\u003ctd\u003e22mm – 140mm (0.87\" – 5.51\")\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eShaft Bore Diameter Range\u003c\/th\u003e\n\u003ctd\u003e3mm – 60mm (0.12\" – 2.36\") — See variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eHub Material\u003c\/th\u003e\n\u003ctd\u003e6061-T6 Aluminum Alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eSpider Insert Material\u003c\/th\u003e\n\u003ctd\u003ePolyurethane (PU)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eSurface Finish\u003c\/th\u003e\n\u003ctd\u003eNatural Anodized\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eCoupling Type\u003c\/th\u003e\n\u003ctd\u003eFlexible Jaw \/ Plum Spider\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eFastening Method\u003c\/th\u003e\n\u003ctd\u003eSet Screw\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eMisalignment Tolerance (Parallel)\u003c\/th\u003e\n\u003ctd\u003eTypically 0.2–0.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eMisalignment Tolerance (Angular)\u003c\/th\u003e\n\u003ctd\u003eTypically 1°–3°\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eOperating Temperature\u003c\/th\u003e\n\u003ctd\u003eTypically –30°C to +100°C\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eNumber of Variants\u003c\/th\u003e\n\u003ctd\u003e22 sizes\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-faq\"\u003e\n    \u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eHow do I choose the right coupler size for my stepper motor?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eMatch the coupler's shaft bore range to your motor shaft diameter and lead screw diameter. For example, a NEMA 17 stepper typically has a 5mm shaft — select a variant whose shaft bore range includes 5mm (e.g., D14mm x L22mm, bore 3–8mm). The coupler OD and length should fit within your motor mount clearance.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eCan this coupler handle both metric and imperial shaft sizes?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThe bore is sized for metric shafts. Imperial shafts that fall within the listed bore range (e.g., 1\/4\" ≈ 6.35mm) can typically be accommodated, but verify the exact bore diameter of the selected variant against your shaft's imperial measurement before ordering.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eHow strong is the torque transmission through the PU spider?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThe polyurethane spider insert is rated for moderate-to-high torque transmission suitable for CNC lead screws, 3D printer axes, and light servo applications. Exact torque ratings vary by coupler size — larger diameter couplers (D40mm and above) handle significantly higher torque loads than smaller variants.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eIs this coupler corrosion-resistant for use in humid or outdoor environments?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThe anodized 6061-T6 aluminum hubs offer good corrosion resistance for indoor and moderately humid environments. The anodizing layer protects against oxidation. For prolonged outdoor or salt-spray exposure, additional protective coating is recommended.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWill this coupling work with both stepper motors and servo motors?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. The flexible jaw design is compatible with stepper motors (NEMA 17, 23, 34) and servo motors, provided the shaft diameter falls within the selected variant's bore range. The PU spider also helps dampen the torque ripple characteristic of stepper motors, reducing resonance in the drivetrain.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat is the difference between the two shaft bore values listed per variant?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eEach variant lists two bore values — one for each hub. For example, \"3mm to 8mm\" means one hub is bored to 3mm and the other to 8mm, allowing you to connect two shafts of different diameters. If you need both ends the same size, select a variant where both values match your shaft diameter, or contact us to confirm bore configuration.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eCan I replace just the spider insert without buying a new coupler?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThe PU spider insert is a wear component and can typically be replaced independently of the aluminum hubs. If the spider shows cracking or deformation from overload, replacing only the insert restores coupling performance without replacing the entire assembly.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-cta\"\u003e\n    🛒 Select your Coupler Dimension and Shaft Diameter above, then add to cart.\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I choose the right coupler size for my stepper motor?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Match the coupler's shaft bore range to your motor shaft diameter and lead screw diameter. For example, a NEMA 17 stepper typically has a 5mm shaft — select a variant whose shaft bore range includes 5mm (e.g., D14mm x L22mm, bore 3–8mm). The coupler OD and length should fit within your motor mount clearance.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can this coupler handle both metric and imperial shaft sizes?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The bore is sized for metric shafts. Imperial shafts that fall within the listed bore range (e.g., 1\/4\\\" ≈ 6.35mm) can typically be accommodated, but verify the exact bore diameter of the selected variant against your shaft's imperial measurement before ordering.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How strong is the torque transmission through the PU spider?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The polyurethane spider insert is rated for moderate-to-high torque transmission suitable for CNC lead screws, 3D printer axes, and light servo applications. Exact torque ratings vary by coupler size — larger diameter couplers (D40mm and above) handle significantly higher torque loads than smaller variants.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is this coupler corrosion-resistant for use in humid or outdoor environments?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The anodized 6061-T6 aluminum hubs offer good corrosion resistance for indoor and moderately humid environments. The anodizing layer protects against oxidation. For prolonged outdoor or salt-spray exposure, additional protective coating is recommended.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Will this coupling work with both stepper motors and servo motors?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. The flexible jaw design is compatible with stepper motors (NEMA 17, 23, 34) and servo motors, provided the shaft diameter falls within the selected variant's bore range. The PU spider also helps dampen the torque ripple characteristic of stepper motors, reducing resonance in the drivetrain.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the difference between the two shaft bore values listed per variant?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Each variant lists two bore values — one for each hub. For example, '3mm to 8mm' means one hub is bored to 3mm and the other to 8mm, allowing you to connect two shafts of different diameters. If you need both ends the same size, select a variant where both values match your shaft diameter, or contact us to confirm bore configuration.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I replace just the spider insert without buying a new coupler?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The PU spider insert is a wear component and can typically be replaced independently of the aluminum hubs. If the spider shows cracking or deformation from overload, replacing only the insert restores coupling performance without replacing the entire assembly.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"HomeDIYer","offers":[{"title":"D14mm x L22mm \/ 3mm to 8mm","offer_id":52421722669330,"sku":"SSJWYXKJGK0001x1","price":7.41,"currency_code":"USD","in_stock":true},{"title":"D14mm x L22mm \/ 3mm to 6mm","offer_id":52421722702098,"sku":"SSJWYXKJGK0002x1","price":7.41,"currency_code":"USD","in_stock":true},{"title":"D20mm x L25mm \/ 4mm to 10mm","offer_id":52421722734866,"sku":"SSJWYXKJGK0003x1","price":7.98,"currency_code":"USD","in_stock":true},{"title":"D20mm x L30mm \/ 4mm to 10mm","offer_id":52421722767634,"sku":"SSJWYXKJGK0004x1","price":8.27,"currency_code":"USD","in_stock":true},{"title":"D25mm x L30mm \/ 5mm to 14mm","offer_id":52421722800402,"sku":"SSJWYXKJGK0005x1","price":8.8,"currency_code":"USD","in_stock":true},{"title":"D25mm x L35mm \/ 5mm to 14mm","offer_id":52421722833170,"sku":"SSJWYXKJGK0006x1","price":10.47,"currency_code":"USD","in_stock":true},{"title":"D30mm x L35mm \/ 5mm to 16mm","offer_id":52421722865938,"sku":"SSJWYXKJGK0007x1","price":12.95,"currency_code":"USD","in_stock":true},{"title":"D30mm x L40mm \/ 5mm to 16mm","offer_id":52421722898706,"sku":"SSJWYXKJGK0008x1","price":13.8,"currency_code":"USD","in_stock":true},{"title":"D35mm x L50mm \/ 6mm to 19mm","offer_id":52421722931474,"sku":"SSJWYXKJGK0009x1","price":16.16,"currency_code":"USD","in_stock":true},{"title":"D35mm x L60mm \/ 6mm to 19mm","offer_id":52421722964242,"sku":"SSJWYXKJGK0010x1","price":17.31,"currency_code":"USD","in_stock":true},{"title":"D40mm x L50mm \/ 6mm to 22mm","offer_id":52421722997010,"sku":"SSJWYXKJGK0011x1","price":19.65,"currency_code":"USD","in_stock":true},{"title":"D40mm x L55mm \/ 6mm to 22mm","offer_id":52421723029778,"sku":"SSJWYXKJGK0012x1","price":20.81,"currency_code":"USD","in_stock":true},{"title":"D40mm x L66mm \/ 6mm to 22mm","offer_id":52421723062546,"sku":"SSJWYXKJGK0013x1","price":22.55,"currency_code":"USD","in_stock":true},{"title":"D40mm x L78mm \/ 8mm to 22mm","offer_id":52421723095314,"sku":"SSJWYXKJGK0014x1","price":28.34,"currency_code":"USD","in_stock":true},{"title":"D45mm x L66mm \/ 6mm to 25mm","offer_id":52421723128082,"sku":"SSJWYXKJGK0015x1","price":33.5,"currency_code":"USD","in_stock":true},{"title":"D45mm x L78mm \/ 10mm to 25mm","offer_id":52421723160850,"sku":"SSJWYXKJGK0016x1","price":35.86,"currency_code":"USD","in_stock":true},{"title":"D55mm x L66mm \/ 12mm to 30mm","offer_id":52421723193618,"sku":"SSJWYXKJGK0017x1","price":43.4,"currency_code":"USD","in_stock":true},{"title":"D55mm x L78mm \/ 14mm to 28mm","offer_id":52421723226386,"sku":"SSJWYXKJGK0018x1","price":48.59,"currency_code":"USD","in_stock":true},{"title":"D65mm x L90mm \/ 14mm to 35mm","offer_id":52421723259154,"sku":"SSJWYXKJGK0019x1","price":76.43,"currency_code":"USD","in_stock":true},{"title":"D80mm x L114mm \/ 24mm to 45mm","offer_id":52421723291922,"sku":"SSJWYXKJGK0020x1","price":131.57,"currency_code":"USD","in_stock":true},{"title":"D95mm x L126mm \/ 30mm to 55mm","offer_id":52421723324690,"sku":"SSJWYXKJGK0021x1","price":209.62,"currency_code":"USD","in_stock":true},{"title":"D105mm x L140mm \/ 35mm to 60mm","offer_id":52421723357458,"sku":"SSJWYXKJGK0022x1","price":324.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture5of33_45d4ea7f-e2b6-43f6-9941-5b9dcfdbae20.jpg?v=1783069391"},{"product_id":"flexible-shaft-coupling-bellows-cnc-aluminum-alloy-coupler","title":"Flexible Shaft Coupling Connector Coupler CNC Aluminum Alloy Bellows 3mm-45mm","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eFlexible Shaft Coupling Bellows Coupler — Precision Motion Control for CNC \u0026amp; Automation\u003c\/h2\u003e\n\u003cp\u003eWhen shaft misalignment causes vibration, backlash, or premature wear in your CNC machine, 3D printer, or servo-driven system, a rigid coupling simply cannot compensate. Engineers, machine builders, and serious DIY machinists need a coupling that absorbs angular, parallel, and axial misalignment without sacrificing torque transmission accuracy. These CNC-machined aluminum alloy bellows shaft couplings are engineered for exactly that demand.\u003c\/p\u003e\n\u003cp\u003eEach coupler is precision-machined from 6061 aluminum alloy with a stainless steel bellows element, available in seven size variants ranging from D20mm × L33mm up to D80mm × L103mm. Bore capacity spans 3mm to 45mm (approximately 0.12\" to 1.77\"), covering the most common shaft diameters used in stepper motors, servo motors, and lead screw assemblies. The two-piece clamp design allows tool-free shaft insertion and secure clamping without set screws that can mar shaft surfaces.\u003c\/p\u003e\n\u003cp\u003eTypical applications include CNC router Z-axis lead screw connections, 3D printer Z-axis motor couplings, laser engraver drive shaft connections, and light-duty servo motor-to-encoder shaft links. The bellows element makes these couplings especially well-suited for flexible shaft coupling for stepper motor 3D printer builds and CNC bellows coupler for lead screw setups where zero-backlash performance is critical.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e⚙️\u003c\/span\u003e Compatible with stepper motors, servo motors, NEMA 17 \/ NEMA 23 frames, lead screws, and encoder shafts with bore diameters from 3mm to 45mm (0.12\"–1.77\").\u003c\/div\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These Bellows Shaft Couplings\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-list\"\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\u003cstrong\u003eCNC-Machined 6061 Aluminum Body\u003c\/strong\u003e\u003cp\u003ePrecision-turned aluminum hubs deliver consistent bore concentricity and a secure clamp fit, reducing runout in high-speed applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🌀\u003c\/span\u003e\u003cstrong\u003eStainless Steel Bellows Element\u003c\/strong\u003e\u003cp\u003eThe flexible bellows absorbs angular, parallel, and axial misalignment simultaneously, protecting bearings and encoders from side-load stress.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\u003cstrong\u003e7 Size Options — D20mm to D80mm\u003c\/strong\u003e\u003cp\u003eChoose from seven coupler dimensions with matching bore ranges (3–10mm up to 12–45mm) to fit your exact motor and shaft combination.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔒\u003c\/span\u003e\u003cstrong\u003eClamp-Style Shaft Retention\u003c\/strong\u003e\u003cp\u003eSplit-clamp hubs grip shafts firmly without set screws, eliminating shaft surface damage and allowing quick repositioning during assembly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚡\u003c\/span\u003e\u003cstrong\u003eZero-Backlash Torque Transmission\u003c\/strong\u003e\u003cp\u003eThe bellows design transmits torque with minimal angular play, making it suitable for closed-loop servo and stepper positioning systems.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e\u003cstrong\u003eCorrosion-Resistant Construction\u003c\/strong\u003e\u003cp\u003eAluminum hubs with a natural anodize-ready finish and stainless steel bellows resist oxidation in workshop and light industrial environments.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — Bellows Shaft Coupling\u003c\/h2\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial — Hub\u003c\/th\u003e\n\u003ctd\u003e6061 Aluminum Alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial — Bellows\u003c\/th\u003e\n\u003ctd\u003eStainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCoupler Dimensions\u003c\/th\u003e\n\u003ctd\u003eD20×L33 \/ D25×L38 \/ D32×L43 \/ D40×L62 \/ D55×L72 \/ D65×L81 \/ D80×L103 (mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Range (d1–d2)\u003c\/th\u003e\n\u003ctd\u003e3–10mm \/ 4–12mm \/ 5–16mm \/ 6–22mm \/ 8–28mm \/ 10–38mm \/ 12–45mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Range (inches)\u003c\/th\u003e\n\u003ctd\u003e0.12\"–0.39\" to 0.47\"–1.77\" depending on variant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCoupling Type\u003c\/th\u003e\n\u003ctd\u003eBellows \/ Flexible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShaft Retention\u003c\/th\u003e\n\u003ctd\u003eSplit Clamp (no set screw)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMisalignment Compensation\u003c\/th\u003e\n\u003ctd\u003eAngular, Parallel, Axial\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eNatural Aluminum (anodize-ready)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMax Recommended RPM\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOperating Temperature\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-faq\"\u003e\n\u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eHow do I choose the right coupler size for my motor and lead screw?\u003c\/summary\u003e\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eMatch the Coupler Dimension (D × L) to the space available in your machine, then confirm both shaft diameters fall within the listed Inner Hole Range (d1–d2) for that variant. For example, if your stepper motor shaft is 5mm and your lead screw is 8mm, the D25×L38 variant (4–12mm range) covers both. Always measure your actual shaft diameters before ordering.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat is the difference between a bellows coupling and a jaw (spider) coupling?\u003c\/summary\u003e\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eA bellows coupling uses a thin-walled corrugated metal tube to transmit torque, offering true zero-backlash performance and the ability to compensate for angular, parallel, and axial misalignment simultaneously. A jaw coupling uses an elastomeric spider insert that introduces a small amount of backlash and dampens shock loads. Bellows couplings are preferred for closed-loop servo and precision CNC positioning; jaw couplings are better for applications with shock or vibration damping requirements.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan these couplings handle both metric and imperial shaft sizes?\u003c\/summary\u003e\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThe bore ranges are specified in metric (mm). Many common imperial shaft sizes fall within these ranges — for example, a 1\/4\" (6.35mm) shaft fits within the D20×L33 variant's 3–10mm bore range. Check the exact bore range for your chosen variant and convert your imperial shaft diameter to millimeters to confirm compatibility.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHow strong is the bellows element — will it fatigue or break under continuous use?\u003c\/summary\u003e\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThe stainless steel bellows is designed for continuous cyclic flexing under normal misalignment conditions. Fatigue life depends on the degree of misalignment and operating speed. To maximize service life, align shafts as closely as possible before tightening the clamp hubs — the bellows should compensate for residual misalignment, not serve as the primary alignment correction. Avoid exceeding the rated misalignment angles for your selected size.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eAre these couplings suitable for 3D printer Z-axis applications?\u003c\/summary\u003e\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. The D20×L33 and D25×L38 variants are the most commonly used sizes for NEMA 17 stepper motor shafts (typically 5mm) paired with TR8 or M5 lead screws (typically 5–8mm). The zero-backlash bellows design helps eliminate Z-axis wobble and layer inconsistency caused by coupling play, making it a direct upgrade over standard flexible jaw couplings in FDM 3D printers.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHow do I install and tighten the clamp-style hubs correctly?\u003c\/summary\u003e\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eInsert each shaft into its respective hub bore until it reaches the midpoint of the hub depth. Align the coupling so the bellows is not pre-compressed or pre-stretched. Tighten the clamp screws gradually and evenly — typically to the torque specification for the screw size used (refer to your variant's documentation). Do not overtighten, as this can distort the bore and reduce clamping effectiveness. Re-check alignment after initial tightening.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWill the aluminum hubs corrode in a humid workshop environment?\u003c\/summary\u003e\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003e6061 aluminum alloy forms a natural oxide layer that provides good corrosion resistance in typical indoor workshop conditions. The stainless steel bellows adds further resistance to oxidation. For environments with exposure to cutting fluids, coolants, or high humidity, consider applying a light coat of corrosion-inhibiting oil to the hub exterior periodically. The bore interior should be kept clean and dry for reliable clamping.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e\u003cp\u003e🛒 Select your Coupler Dimension and Inner Hole Range above, then add to cart.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"How do I choose the right coupler size for my motor and lead screw?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Match the Coupler Dimension (D x L) to the space available in your machine, then confirm both shaft diameters fall within the listed Inner Hole Range (d1-d2) for that variant. Always measure your actual shaft diameters before ordering.\"}},{\"@type\":\"Question\",\"name\":\"What is the difference between a bellows coupling and a jaw (spider) coupling?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"A bellows coupling uses a thin-walled corrugated metal tube to transmit torque with zero backlash and compensates for angular, parallel, and axial misalignment. A jaw coupling uses an elastomeric spider insert with slight backlash and shock damping. Bellows couplings are preferred for closed-loop servo and precision CNC positioning.\"}},{\"@type\":\"Question\",\"name\":\"Can these couplings handle both metric and imperial shaft sizes?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The bore ranges are specified in metric (mm). Many imperial shaft sizes fall within these ranges. Convert your imperial shaft diameter to millimeters and check it against the bore range for your chosen variant.\"}},{\"@type\":\"Question\",\"name\":\"How strong is the bellows element — will it fatigue or break under continuous use?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The stainless steel bellows is designed for continuous cyclic flexing. To maximize service life, align shafts as closely as possible before tightening — the bellows compensates for residual misalignment, not primary alignment correction.\"}},{\"@type\":\"Question\",\"name\":\"Are these couplings suitable for 3D printer Z-axis applications?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. The D20x L33 and D25xL38 variants suit NEMA 17 stepper motor shafts (5mm) paired with TR8 or M5 lead screws. The zero-backlash bellows design eliminates Z-axis wobble caused by coupling play.\"}},{\"@type\":\"Question\",\"name\":\"How do I install and tighten the clamp-style hubs correctly?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Insert each shaft into its hub bore to mid-depth. Align the coupling so the bellows is neither pre-compressed nor pre-stretched. Tighten clamp screws gradually and evenly. Re-check alignment after initial tightening.\"}},{\"@type\":\"Question\",\"name\":\"Will the aluminum hubs corrode in a humid workshop environment?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"6061 aluminum forms a natural oxide layer providing good corrosion resistance in typical indoor workshop conditions. The stainless steel bellows adds further oxidation resistance. Apply corrosion-inhibiting oil periodically in high-humidity or coolant-exposed environments.\"}}]}\u003c\/script\u003e","brand":"HomeDIYer","offers":[{"title":"D20mm x L33mm \/ 3mm to 10mm","offer_id":52421723422994,"sku":"SSJWYXKJGK0336x1","price":21.53,"currency_code":"USD","in_stock":true},{"title":"D25mm x L38mm \/ 4mm to 12mm","offer_id":52421723455762,"sku":"SSJWYXKJGK0337x1","price":27.24,"currency_code":"USD","in_stock":true},{"title":"D40mm x L62mm \/ 6mm to 22mm","offer_id":52421723488530,"sku":"SSJWYXKJGK0339x1","price":48.1,"currency_code":"USD","in_stock":true},{"title":"D55mm x L72mm \/ 8mm to 28mm","offer_id":52421723521298,"sku":"SSJWYXKJGK0340x1","price":96.83,"currency_code":"USD","in_stock":true},{"title":"D65mm x L81mm \/ 10mm to 38mm","offer_id":52421723554066,"sku":"SSJWYXKJGK0341x1","price":134.08,"currency_code":"USD","in_stock":true},{"title":"D80mm x L103mm \/ 12mm to 45mm","offer_id":52421723586834,"sku":"SSJWYXKJGK0342x1","price":229.76,"currency_code":"USD","in_stock":true},{"title":"D32mm x L43mm \/ 5mm to 16mm","offer_id":52421723619602,"sku":"SSJWYXKJGK0338x1","price":32.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture3of18_b66550b1-0c8e-4480-af83-e8e97e45fb11.jpg?v=1783070646"},{"product_id":"3-8mm-brass-rc-car-wheels-shaft-motor-flexible-coupling-coupler-hex-connector","title":"3-8mm Brass RC Car Wheels Shaft Motor Flexible Coupling Coupler Hex Connector","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003e3–8mm Flexible Shaft Coupling Coupler — Precision Hex Connector for RC Cars \u0026amp; Motors\u003c\/h2\u003e\n\u003cp\u003eWhen a misaligned motor shaft causes vibration, slippage, or premature wear on your RC car or DIY drive system, the root cause is almost always a poorly fitted coupler. Hobbyists, robotics builders, and RC enthusiasts who demand tight tolerances and reliable torque transfer need a flexible shaft coupling that holds its position under load without stripping or loosening.\u003c\/p\u003e\n\u003cp\u003eThese flexible coupling couplers are available in two materials — brass and 45 steel — and span a shaft diameter range of 2mm to 8mm (approximately 0.079 in to 0.315 in). Each hex connector is machined to close tolerances, with a set-screw locking mechanism that grips the shaft securely. Packing options include 1, 2, 4, or 10 pieces per order to suit single builds or bulk workshop stock.\u003c\/p\u003e\n\u003cp\u003eTypical use cases include RC car wheel-to-motor shaft connections, small DC motor couplings in desktop CNC and 3D printer extruder drives, and flexible shaft joints in DIY robotics arm assemblies — all scenarios where a rigid coupling would crack under slight angular misalignment.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e🔧\u003c\/span\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Fits standard round motor shafts from 2mm to 8mm (0.079\"–0.315\"). Compatible with most RC car motors, hobby DC motors, stepper motors, and small servo shafts. Verify your shaft diameter before ordering.\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These Flexible Shaft Coupling Couplers\u003c\/h2\u003e\n\u003cul class=\"hdiy-list\"\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚙️\u003c\/span\u003e\u003cstrong\u003eWide Size Range:\u003c\/strong\u003e Available in 2, 3, 3.17, 4, 5, 6, 7, and 8mm shaft diameters to cover the most common RC and hobby motor shaft standards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\u003cstrong\u003eDual Material Options:\u003c\/strong\u003e Choose brass for corrosion resistance and lightweight performance, or 45 steel for higher torque loads and greater mechanical strength.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🎯\u003c\/span\u003e\u003cstrong\u003eHex Connector Design:\u003c\/strong\u003e The hex-profile bore and set-screw locking system prevents rotational slippage, maintaining consistent shaft engagement under dynamic loads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e\u003cstrong\u003eFlexible Coupling Action:\u003c\/strong\u003e Absorbs minor angular and parallel misalignment between motor and driven shaft, reducing vibration transmission and protecting bearings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e\u003cstrong\u003eFlexible Pack Quantities:\u003c\/strong\u003e Order 1, 2, 4, or 10 pieces — ideal for single project builds, spares kits, or workshop bulk stock.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🏗️\u003c\/span\u003e\u003cstrong\u003eBroad Application Fit:\u003c\/strong\u003e Suited for RC cars, desktop CNC machines, 3D printer extruder drives, DIY robotics, and small automation systems requiring reliable shaft-to-shaft connection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — Flexible Shaft Coupling Coupler\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eShaft Diameter Range\u003c\/th\u003e\n\u003ctd\u003e2mm – 8mm (0.079\" – 0.315\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAvailable Sizes\u003c\/th\u003e\n\u003ctd\u003e2mm, 3mm, 3.17mm, 4mm, 5mm, 6mm, 7mm, 8mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial Options\u003c\/th\u003e\n\u003ctd\u003eBrass \/ 45 Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eConnector Type\u003c\/th\u003e\n\u003ctd\u003eHex Flexible Coupling with Set Screw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Tolerance\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOverall Length\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOuter Diameter\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eNatural machined (Brass) \/ Oxide-treated (45 Steel)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePacking Quantity\u003c\/th\u003e\n\u003ctd\u003e1 pcs \/ 2 pcs \/ 4 pcs \/ 10 pcs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003ctd\u003eRC cars, hobby motors, CNC, robotics, 3D printers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-faq\"\u003e\n\u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I choose the right shaft diameter for my motor?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eMeasure your motor output shaft with a digital caliper. Match that measurement to the available sizes: 2mm, 3mm, 3.17mm, 4mm, 5mm, 6mm, 7mm, or 8mm. If your shaft falls between sizes, always size down and use the set screw to secure — never force a coupler that is too small onto a shaft.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between the brass and 45 steel versions?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eBrass couplers are lighter, naturally corrosion-resistant, and well-suited for low-to-medium torque applications such as RC car wheel hubs and small hobby motors. The 45 steel variants offer higher tensile strength and are better suited for applications with greater torque demands, such as CNC spindle couplings or heavier drive systems. For most RC car builds, brass is the practical choice.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWill this coupler resist rust or corrosion outdoors?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eBrass couplers offer inherent corrosion resistance and perform well in humid or mildly wet outdoor environments. The 45 steel versions have an oxide surface treatment that provides basic protection, but for prolonged outdoor or wet exposure, brass is the recommended choice. Applying a light machine oil to steel couplers after use will extend their service life.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these couplers compatible with stepper motors and servo shafts?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. These flexible shaft couplings are compatible with most standard round motor shafts including DC hobby motors, stepper motors, and small servo output shafts, provided the shaft diameter matches one of the available sizes (2–8mm). Always confirm your shaft is round and within the listed diameter range before ordering.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow strong is the set-screw grip — will it slip under load?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThe hex bore combined with the set screw provides a secure mechanical lock on the shaft. For typical RC car and hobby motor torque levels, slippage is not expected under normal operating conditions. For very high-torque applications, consider applying a small amount of thread-locking compound to the set screw for added security.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use one coupler to connect two different shaft diameters?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eNo — each coupler listed here is a single-bore size designed for shafts of the same diameter on both ends. If you need to connect two shafts of different diameters, you would require a reducing or stepped coupling, which is a different product type. Check the variant options carefully and match both shaft ends before purchasing.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow many pieces should I order for a typical RC car build?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eMost RC car builds require 2 to 4 couplers depending on the drivetrain configuration (2WD vs 4WD). The 2-piece and 4-piece packing options are the most popular for single vehicle builds. The 10-piece pack offers the best per-unit value for workshop stock or multi-vehicle projects.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-cta\"\u003e\n🛒 Select your size, material, and packing quantity above, then add to cart.\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I choose the right shaft diameter for my motor?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Measure your motor output shaft with a digital caliper. Match that measurement to the available sizes: 2mm, 3mm, 3.17mm, 4mm, 5mm, 6mm, 7mm, or 8mm. If your shaft falls between sizes, always size down and use the set screw to secure.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the difference between the brass and 45 steel versions?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Brass couplers are lighter, naturally corrosion-resistant, and suited for low-to-medium torque applications. The 45 steel variants offer higher tensile strength for greater torque demands such as CNC spindle couplings.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Will this coupler resist rust or corrosion outdoors?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Brass couplers offer inherent corrosion resistance for humid or mildly wet environments. The 45 steel versions have an oxide surface treatment for basic protection. Applying light machine oil to steel couplers after use extends service life.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Are these couplers compatible with stepper motors and servo shafts?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes, compatible with most standard round motor shafts including DC hobby motors, stepper motors, and small servo output shafts, provided the shaft diameter matches one of the available sizes (2–8mm).\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How strong is the set-screw grip — will it slip under load?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The hex bore combined with the set screw provides a secure mechanical lock. For typical RC car and hobby motor torque levels, slippage is not expected. For very high-torque applications, apply thread-locking compound to the set screw.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I use one coupler to connect two different shaft diameters?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"No — each coupler is a single-bore size designed for shafts of the same diameter on both ends. To connect two shafts of different diameters, a reducing or stepped coupling is required.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How many pieces should I order for a typical RC car build?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Most RC car builds require 2 to 4 couplers depending on drivetrain configuration. The 2-piece and 4-piece packing options suit single vehicle builds. The 10-piece pack offers the best per-unit value for workshop stock.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"HomeDIYer","offers":[{"title":"8mm \/ Brass \/ 1 pcs","offer_id":52421723652370,"sku":"GYZLPJSCS00092x1","price":2.46,"currency_code":"USD","in_stock":true},{"title":"3mm \/ Brass \/ 1 pcs","offer_id":52421723685138,"sku":"GYZLPJSCS00093x1","price":2.46,"currency_code":"USD","in_stock":true},{"title":"2mm \/ Brass \/ 1 pcs","offer_id":52421723717906,"sku":"GYZLPJSCS00094x1","price":2.46,"currency_code":"USD","in_stock":true},{"title":"3.17mm \/ Brass \/ 1 pcs","offer_id":52421723750674,"sku":"GYZLPJSCS00095x1","price":2.46,"currency_code":"USD","in_stock":true},{"title":"5mm \/ 45 steel \/ 1 pcs","offer_id":52421723783442,"sku":"GYZLPJSCS00096x1","price":2.46,"currency_code":"USD","in_stock":true},{"title":"6mm \/ 45 steel \/ 1 pcs","offer_id":52421723816210,"sku":"GYZLPJSCS00097x1","price":2.46,"currency_code":"USD","in_stock":true},{"title":"5mm \/ Brass \/ 1 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pcs","offer_id":52421724930322,"sku":"GYZLPJSCS00101x10","price":12.73,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture9of20_bd2ba0dc-0594-4072-be97-1e003fd0cb5b.jpg?v=1783070893"},{"product_id":"flexible-shaft-coupling-3-10mm-stepper-motor-coupler-connector","title":"Flexible Shaft Coupling Joint Stepper Motor Coupler Connector 3-10mm All Size","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eFlexible Shaft Coupling Connector for Stepper Motors — Zero-Backlash 3–10mm All Sizes\u003c\/h2\u003e\n\u003cp\u003eConnecting a stepper motor shaft to a lead screw or encoder with a rigid coupler often results in backlash, vibration, and positional error that degrades print quality on 3D printers or reduces accuracy on CNC machines. Makers, engineers, and automation builders who need a reliable, low-backlash flexible shaft coupling connector in the 3–10mm bore range will find this coupler covers virtually every common shaft size combination in a single product listing.\u003c\/p\u003e\n\u003cp\u003eThis flexible shaft coupling is machined from aluminum alloy and uses a helical-cut body that acts as a spring element, absorbing angular misalignment and axial play without a separate elastomeric insert. The outer body is a single-piece construction. Bore combinations span 3mm to 10mm (~0.12 in to 0.39 in) on each side, including same-bore and mixed-bore pairings such as 3mm-to-5mm, 4mm-to-8mm, 5mm-to-10mm, and all intermediate steps. Each hub is secured by set screws.\u003c\/p\u003e\n\u003cp\u003eTypical use cases include NEMA 17 stepper motor to T8 lead-screw connections on 3D printer Z-axes, stepper-to-encoder shaft links on CNC router axes, and small servo motor to pump shaft couplings in laboratory automation. The helical-cut flexible shaft coupler is also widely used in rotary stage drives and optical positioning equipment where low backlash and smooth torque transmission are critical.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e⚙️\u003c\/span\u003e Compatible with NEMA 17 and NEMA 23 stepper motors, DC gear motors, servo motors, encoders, and lead screws with shaft diameters from 3mm to 10mm. Fits standard CNC, 3D printer, and automation drive trains.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These Flexible Shaft Coupling Connectors\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-list\"\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\u003cstrong\u003eAluminum Alloy Single-Piece Body\u003c\/strong\u003e\u003cp\u003eThe coupler is machined from aluminum alloy in a single piece with a helical cut, eliminating the need for a separate spider insert and reducing the number of parts that can wear or fail over time.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🌀\u003c\/span\u003e\u003cstrong\u003eHelical-Cut Flexible Design\u003c\/strong\u003e\u003cp\u003eThe helical slot pattern allows the coupler to flex under angular and axial misalignment while transmitting torque continuously, reducing vibration transmitted to the driven shaft and protecting motor bearings.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\u003cstrong\u003eAll Sizes 3mm to 10mm\u003c\/strong\u003e\u003cp\u003eWith bore combinations covering 3mm to 10mm on each side — including same-bore and mixed-bore pairings — this listing replaces the need to search for multiple individual couplers for different axis configurations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔧\u003c\/span\u003e\u003cstrong\u003eSet-Screw Shaft Fixation\u003c\/strong\u003e\u003cp\u003eEach end is secured to its shaft via set screws, enabling tool-assisted installation and removal without damaging the shaft surface, and allowing quick swaps during prototyping or maintenance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚖️\u003c\/span\u003e\u003cstrong\u003eLightweight Construction\u003c\/strong\u003e\u003cp\u003eThe aluminum alloy body keeps rotating mass low, which is important for stepper motor systems where high inertia loads can cause missed steps or reduced acceleration performance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🎯\u003c\/span\u003e\u003cstrong\u003eLow Backlash Torque Transmission\u003c\/strong\u003e\u003cp\u003eThe helical-cut structure maintains continuous contact between the two shaft ends, minimizing rotational play and delivering consistent positional accuracy for CNC and 3D printing applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — Flexible Shaft Coupling Connector\u003c\/h2\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eCoupling Type\u003c\/th\u003e\n\u003ctd\u003eHelical-cut flexible shaft coupling\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBody Material\u003c\/th\u003e\n\u003ctd\u003eAluminum alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eConstruction\u003c\/th\u003e\n\u003ctd\u003eSingle-piece helical-cut body\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Range (each end)\u003c\/th\u003e\n\u003ctd\u003e3mm to 10mm (~0.12 in to 0.39 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Combination (d1 \/ d2)\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOuter Diameter\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBody Length\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShaft Fixation\u003c\/th\u003e\n\u003ctd\u003eSet screw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eNatural aluminum (uncoated)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eQuantity per Order\u003c\/th\u003e\n\u003ctd\u003e1 piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-faq\"\u003e\n\u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eHow do I select the correct bore size combination?\u003c\/summary\u003e\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eMeasure the shaft diameter of your motor (d1) and the shaft diameter of your driven component such as a lead screw or encoder (d2). Then select the variant that matches both values. For example, if your NEMA 17 stepper motor has a 5mm shaft and your T8 lead screw has an 8mm shaft, choose the 5mm to 8mm variant. All combinations from 3mm to 10mm are available, including same-bore pairings.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat is the difference between a helical-cut coupler and a jaw spider coupler?\u003c\/summary\u003e\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eA helical-cut coupler is machined from a single piece of aluminum with a spiral slot that provides flexibility. It has no separate insert to wear out and generally offers lower backlash. A jaw spider coupler uses two separate hubs and a polyurethane spider insert between them, which provides better vibration damping but may introduce slightly more backlash as the insert wears. For precision positioning on 3D printers and CNC machines, the helical-cut design is typically preferred.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan this coupler handle angular misalignment between the motor and lead screw?\u003c\/summary\u003e\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. The helical-cut flexible shaft coupling is designed to accommodate small degrees of angular misalignment (typically up to 1°) and minor axial offset. For best results, align the motor and driven shaft as closely as possible during installation and use the coupler's flexibility to absorb residual misalignment rather than as a primary correction for large offsets.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eIs aluminum strong enough for continuous stepper motor operation?\u003c\/summary\u003e\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eAluminum alloy is well suited for the torque levels produced by NEMA 17 and NEMA 23 stepper motors used in 3D printers, CNC routers, and light automation equipment. The material provides a good strength-to-weight ratio and resists fatigue under cyclic loading at typical stepper motor speeds. For very high-torque or high-speed industrial drives, verify the coupler's torque rating against your motor specifications.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWill the coupler corrode in a workshop or outdoor environment?\u003c\/summary\u003e\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eAluminum alloy naturally forms a thin oxide layer that provides moderate corrosion resistance in typical indoor workshop environments. For applications involving moisture, cutting fluids, or chemical exposure, consider applying a protective coating such as anodizing or a clear lacquer. The set screws are typically steel and may show surface rust in very humid conditions; applying a small amount of anti-seize compound during installation can help.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHow do I install the coupler correctly to avoid slipping?\u003c\/summary\u003e\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eInsert the motor shaft into one end of the coupler until the shaft end is flush with or slightly recessed from the inner face of the set-screw bore. Tighten the set screw firmly using the appropriate hex key. Repeat for the driven shaft on the other end. Ensure both set screws are tightened before running the motor. If the shaft has a flat (D-cut), align the set screw with the flat for a more secure grip.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhich 3D printer and CNC applications is this coupler best suited for?\u003c\/summary\u003e\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThis flexible shaft coupling connector is widely used on 3D printer Z-axis lead screws (typically 5mm motor shaft to 8mm lead screw), CNC router axis drives, rotary encoder connections, and small pump or fan shaft couplings. The 3mm to 10mm bore range covers the most common shaft sizes found in NEMA 17 and NEMA 23 stepper motor builds.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e\u003cp\u003e🛒 Select your shaft size combination above, then add to cart.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"HomeDIYer","offers":[{"title":"3mm to 5mm Shaft","offer_id":52421724963090,"sku":"GF3831-0","price":8.01,"currency_code":"USD","in_stock":true},{"title":"3mm to 6.35mm Shaft","offer_id":52421724995858,"sku":"GF3831-1","price":13.99,"currency_code":"USD","in_stock":true},{"title":"3mm to 8mm Shaft","offer_id":52421725028626,"sku":"GF3831-2","price":9.07,"currency_code":"USD","in_stock":true},{"title":"4mm to 4mm Shaft","offer_id":52421725061394,"sku":"GF3831-3","price":13.99,"currency_code":"USD","in_stock":true},{"title":"4mm to 5mm Shaft","offer_id":52421725094162,"sku":"GF3831-4","price":13.99,"currency_code":"USD","in_stock":true},{"title":"4mm to 6mm Shaft","offer_id":52421725126930,"sku":"GF3831-5","price":13.99,"currency_code":"USD","in_stock":true},{"title":"4mm to 6.35mm Shaft","offer_id":52421725159698,"sku":"GF3831-6","price":9.0,"currency_code":"USD","in_stock":true},{"title":"4mm to 8mm Shaft","offer_id":52421725192466,"sku":"GF3831-7","price":9.07,"currency_code":"USD","in_stock":true},{"title":"4mm to 10mm Shaft","offer_id":52421725225234,"sku":"GF3831-8","price":8.01,"currency_code":"USD","in_stock":true},{"title":"5mm to 5mm Shaft","offer_id":52421725258002,"sku":"GF3831-9","price":9.0,"currency_code":"USD","in_stock":true},{"title":"5mm to 6mm Shaft","offer_id":52421725290770,"sku":"GF3831-10","price":9.07,"currency_code":"USD","in_stock":true},{"title":"5mm to 6.35mm Shaft","offer_id":52421725323538,"sku":"GF3831-11","price":13.99,"currency_code":"USD","in_stock":true},{"title":"5mm to 8mm Shaft","offer_id":52421725356306,"sku":"GF3831-12","price":9.07,"currency_code":"USD","in_stock":true},{"title":"5mm to 10mm Shaft","offer_id":52421725389074,"sku":"GF3831-13","price":13.99,"currency_code":"USD","in_stock":true},{"title":"6mm to 6mm Shaft","offer_id":52421725421842,"sku":"GF3831-14","price":9.07,"currency_code":"USD","in_stock":true},{"title":"6mm to 6.35mm Shaft","offer_id":52421725454610,"sku":"GF3831-15","price":9.07,"currency_code":"USD","in_stock":true},{"title":"6mm to 7mm Shaft","offer_id":52421725487378,"sku":"GF3831-16","price":8.01,"currency_code":"USD","in_stock":true},{"title":"6mm to 8mm Shaft","offer_id":52421725520146,"sku":"GF3831-17","price":13.99,"currency_code":"USD","in_stock":true},{"title":"6.35mm to 10mm Shaft","offer_id":52421725552914,"sku":"GF3831-18","price":9.07,"currency_code":"USD","in_stock":true},{"title":"6.35mm to 6.35mm Shaft","offer_id":52421725585682,"sku":"GF3831-19","price":13.99,"currency_code":"USD","in_stock":true},{"title":"6.35mm to 8mm Shaft","offer_id":52421725618450,"sku":"GF3831-20","price":13.99,"currency_code":"USD","in_stock":true},{"title":"8mm to 10mm Shaft","offer_id":52421725651218,"sku":"GF3831-21","price":8.01,"currency_code":"USD","in_stock":true},{"title":"10mm to 10mm Shaft","offer_id":52421725683986,"sku":"GF3831-22","price":9.07,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Main-01_0adbd437-1925-4744-b141-4afda1d04db9.jpg?v=1783070920"},{"product_id":"25mm-jaw-spider-shaft-coupling-cnc-flexible-coupler","title":"25mm CNC Flexible Shaft Coupling Spider Splined Jaw Plum Coupler Alu Pumps Motor","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003e25mm Jaw Spider Shaft Coupling — Flexible CNC Coupler for Pumps \u0026amp; Motors\u003c\/h2\u003e\n\u003cp\u003eWhen misalignment between two shafts causes vibration, noise, or premature wear on your CNC machine, pump, or motor drive system, the root cause is often a rigid coupling that cannot absorb angular or parallel offset. Engineers, makers, and automation technicians who need a compact, torque-transmitting solution rely on a jaw spider shaft coupling to bridge the gap without sacrificing rotational accuracy.\u003c\/p\u003e\n\u003cp\u003eThis 25mm jaw spider shaft coupling is machined from aluminum alloy and consists of two jaw hubs and a polyurethane spider insert. The outer diameter is 25mm (approximately 0.98 in), with body lengths of 30mm (~1.18 in) or 35mm (~1.38 in) depending on the variant selected. Bore combinations range from 4mm to 12mm (approximately 0.16 in to 0.47 in) on each side, covering same-bore and mixed-bore configurations.\u003c\/p\u003e\n\u003cp\u003eTypical applications include stepper motor to lead-screw connections on 3D printers and CNC routers, pump shaft couplings in fluid-handling systems, and servo motor drives in light industrial automation. The spider insert dampens shock loads and reduces backlash, making this coupler well suited for encoder-driven positioning stages and ball-screw assemblies.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e⚙️\u003c\/span\u003e Compatible with stepper motors, servo motors, DC gear motors, pumps, and lead screws with shaft diameters from 4mm to 12mm. Fits D25mm outer diameter bore housings.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These 25mm Jaw Spider Shaft Couplings\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-list\"\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\u003cstrong\u003eAluminum Alloy Hubs\u003c\/strong\u003e\u003cp\u003eMachined aluminum alloy hubs deliver a strong, lightweight body that resists corrosion and handles continuous rotational loads without deforming under typical motor torque ranges.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🌀\u003c\/span\u003e\u003cstrong\u003ePolyurethane Spider Insert\u003c\/strong\u003e\u003cp\u003eThe flexible spider element absorbs vibration and shock between the two hubs, reducing transmitted noise and protecting connected components from sudden load spikes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\u003cstrong\u003eWide Bore Range (4–12mm)\u003c\/strong\u003e\u003cp\u003eAvailable in same-bore and mixed-bore combinations from 4mm to 12mm, covering the most common stepper motor shaft and lead-screw shaft diameters used in CNC and automation builds.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📏\u003c\/span\u003e\u003cstrong\u003eTwo Body Lengths: 30mm \u0026amp; 35mm\u003c\/strong\u003e\u003cp\u003eChoose D25×L30mm for compact installations or D25×L35mm where additional axial clearance is needed between motor face and driven component.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔧\u003c\/span\u003e\u003cstrong\u003eSet-Screw Clamping\u003c\/strong\u003e\u003cp\u003eEach hub is secured to its shaft via set screws, allowing tool-free disassembly and reassembly during maintenance or shaft swaps without damaging the shaft surface.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e\u003cstrong\u003eSingle or 5-Pack Quantity\u003c\/strong\u003e\u003cp\u003eOrder as a single coupler for a one-off build or select the 5-piece pack for multi-axis machines, spare inventory, or workshop stock at a reduced per-unit cost.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — Jaw Spider Shaft Coupling\u003c\/h2\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eCoupling Type\u003c\/th\u003e\n\u003ctd\u003eJaw Spider (Plum \/ Oldham style)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOuter Diameter\u003c\/th\u003e\n\u003ctd\u003e25mm (~0.98 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBody Length\u003c\/th\u003e\n\u003ctd\u003e30mm (~1.18 in) or 35mm (~1.38 in) — see variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Range (d1 \/ d2)\u003c\/th\u003e\n\u003ctd\u003e4mm to 12mm (~0.16 in to 0.47 in) — see variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHub Material\u003c\/th\u003e\n\u003ctd\u003eAluminum alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSpider Insert Material\u003c\/th\u003e\n\u003ctd\u003ePolyurethane (PU)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShaft Fixation\u003c\/th\u003e\n\u003ctd\u003eSet screw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eQuantity per Order\u003c\/th\u003e\n\u003ctd\u003e1 Pcs or 5 Pcs — see variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eNatural aluminum (uncoated)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMax Recommended Speed\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-faq\"\u003e\n\u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eHow do I choose the right bore size for my motor and lead screw?\u003c\/summary\u003e\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eMeasure the shaft diameter of your motor (d1) and the shaft diameter of your driven component such as a lead screw or pump shaft (d2). Select the variant that matches both values. For example, if your stepper motor shaft is 5mm and your lead screw is 8mm, choose the 5mm * 8mm option. Mixed-bore combinations are available across the full 4–12mm range.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan this coupling handle angular and parallel misalignment?\u003c\/summary\u003e\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. The polyurethane spider insert allows the coupling to accommodate small degrees of angular misalignment (typically up to 1°) and minor parallel offset between the two shaft centerlines. For best performance and longevity, align shafts as closely as possible during installation and use the spider insert to absorb residual misalignment rather than as a primary correction method.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eIs the aluminum hub strong enough for continuous motor operation?\u003c\/summary\u003e\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eAluminum alloy hubs are well suited for the torque levels produced by NEMA 17 and NEMA 23 stepper motors, small servo motors, and light-duty pump drives. The material provides a favorable strength-to-weight ratio and resists fatigue under cyclic loading. For very high-torque or high-speed industrial applications, confirm the torque rating against your motor specifications before ordering.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWill the aluminum corrode in humid or wet environments?\u003c\/summary\u003e\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eAluminum alloy naturally forms a thin oxide layer that provides moderate corrosion resistance in typical workshop and indoor automation environments. For applications involving direct water contact or chemical exposure, consider applying a protective coating or selecting a stainless steel coupling instead. The polyurethane spider insert is resistant to oils and mild solvents.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat is the difference between the 30mm and 35mm body length variants?\u003c\/summary\u003e\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThe D25×L30mm variant is the more compact option and fits installations where axial space between the motor face and the driven shaft is limited. The D25×L35mm variant provides 5mm of additional length, which can be useful when the motor shaft protrudes further or when you need more clearance for a shaft collar or locking nut. Both variants share the same 25mm outer diameter and bore range.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eShould I order 1 piece or the 5-piece pack?\u003c\/summary\u003e\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eIf you are building or repairing a single-axis machine, the 1-piece option is sufficient. The 5-piece pack is cost-effective for multi-axis CNC routers, 3D printers with multiple lead screws, or workshop stock where having spares on hand avoids downtime. The per-unit cost is lower in the 5-piece pack.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHow do I install and secure the coupling on the shaft?\u003c\/summary\u003e\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eSlide each hub onto its respective shaft until the shaft end is flush with or slightly recessed from the outer face of the hub. Tighten the set screw(s) using the appropriate hex key until the hub is firmly clamped. Insert the spider element between the two hubs, then bring the hubs together so the spider fingers engage the jaw slots on both sides. Verify that the assembly rotates smoothly before powering the motor.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e\u003cp\u003e🛒 Select your Dia. x Length, bore size (φd1 * φd2), and quantity above, then add to cart.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"HomeDIYer","offers":[{"title":"D25mm x L30mm \/ 4mm * 12mm \/ 1 Pcs","offer_id":52421725716754,"sku":"FOB08319x1","price":8.06,"currency_code":"USD","in_stock":true},{"title":"D25mm x L30mm \/ 04mm * 4mm \/ 1 Pcs","offer_id":52421725749522,"sku":"FOB08320x1","price":8.06,"currency_code":"USD","in_stock":true},{"title":"D25mm x L30mm \/ 05mm * 5mm \/ 1 Pcs","offer_id":52421725782290,"sku":"FOB08321x1","price":8.06,"currency_code":"USD","in_stock":true},{"title":"D25mm x L30mm \/ 06mm * 6mm \/ 1 Pcs","offer_id":52421725815058,"sku":"FOB08322x1","price":8.06,"currency_code":"USD","in_stock":true},{"title":"D25mm x L30mm \/ 07mm * 7mm \/ 1 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Precision D44 Double Diaphragm CNC Coupler","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eD44 Double Diaphragm CNC Shaft Coupling — Zero-Backlash Precision for Servo \u0026amp; Stepper Systems\u003c\/h2\u003e\n\u003cp\u003eWhen misalignment, vibration, or backlash creep into your motion system, positioning accuracy suffers and components wear prematurely. Engineers, CNC builders, and automation technicians who demand repeatable, sub-micron performance need a coupling that transmits torque faithfully while absorbing angular and axial deviation without play. These D44 double diaphragm flexible shaft couplings are engineered for exactly that application.\u003c\/p\u003e\n\u003cp\u003eEach coupling features a precision-machined aluminum alloy body with a fixed outer diameter of 44mm (1.73 in) and an overall length of 50mm (1.97 in). The double diaphragm design uses two thin stainless steel diaphragm discs to achieve torsional rigidity while accommodating angular misalignment of typically 1–3° and axial displacement of typically ±0.5–1.0mm. Bore options span φd1 and φd2 from 8mm to 22mm (0.31–0.87 in), covering the most common servo and stepper motor shaft sizes.\u003c\/p\u003e\n\u003cp\u003eTypical use cases include CNC router and milling machine Z-axis ballscrew connections, servo motor to encoder shaft coupling for closed-loop feedback systems, and precision linear actuator drive trains where zero-backlash double diaphragm couplings are required to maintain positioning repeatability across thousands of cycles.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e⚙️\u003c\/span\u003e \u003cstrong\u003eCompatibility:\u003c\/strong\u003e Fits servo motors, stepper motors, and ballscrew assemblies with shaft diameters from 8mm to 22mm. Verify your φd1 (motor shaft) and φd2 (load shaft) before ordering.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These D44 Double Diaphragm CNC Shaft Couplings\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-list\"\u003e\n\u003cdiv class=\"hdiy-icon\"\u003e🔩\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eZero-Backlash Double Diaphragm Design\u003c\/strong\u003e\u003cbr\u003eTwin stainless steel diaphragm discs transmit torque with no rotational play, preserving positioning accuracy in closed-loop servo and CNC systems.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-icon\"\u003e📐\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eWide Bore Range: 8mm–22mm\u003c\/strong\u003e\u003cbr\u003eCovers the most common servo and stepper motor shaft diameters. Select your φd1 (drive side) and φd2 (load side) independently for mixed-shaft configurations.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-icon\"\u003e🏗️\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003ePrecision Aluminum Alloy Body\u003c\/strong\u003e\u003cbr\u003eLightweight yet rigid aluminum alloy construction keeps rotational inertia low while maintaining structural integrity under continuous cyclic loading.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-icon\"\u003e🔄\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMisalignment Compensation\u003c\/strong\u003e\u003cbr\u003eAccommodates angular misalignment (typically 1–3°) and axial displacement (typically ±0.5–1.0mm), reducing bearing load and extending drivetrain service life.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-icon\"\u003e📏\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eFixed D44mm × L50mm Envelope\u003c\/strong\u003e\u003cbr\u003eConsistent outer diameter of 44mm and length of 50mm simplifies machine design and allows direct drop-in replacement across compatible setups.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-icon\"\u003e📦\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eAvailable in 1-Piece or 5-Piece Packs\u003c\/strong\u003e\u003cbr\u003eOrder a single coupling for a repair or prototype, or choose the 5-piece pack for production builds and spare-parts inventory.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — D44 Double Diaphragm Flexible Shaft Coupling\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eCoupling Type\u003c\/th\u003e\n\u003ctd\u003eDouble Diaphragm Flexible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOuter Diameter (D)\u003c\/th\u003e\n\u003ctd\u003e44mm (1.73 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOverall Length (L)\u003c\/th\u003e\n\u003ctd\u003e50mm (1.97 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore φd1 Range\u003c\/th\u003e\n\u003ctd\u003e8mm – 22mm (0.31–0.87 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore φd2 Range\u003c\/th\u003e\n\u003ctd\u003e8mm – 22mm (0.31–0.87 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBody Material\u003c\/th\u003e\n\u003ctd\u003eAluminum Alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDiaphragm Material\u003c\/th\u003e\n\u003ctd\u003eStainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAngular Misalignment\u003c\/th\u003e\n\u003ctd\u003eTypically 1–3°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAxial Displacement\u003c\/th\u003e\n\u003ctd\u003eTypically ±0.5–1.0mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBacklash\u003c\/th\u003e\n\u003ctd\u003eZero (rigid torsional transmission)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePack Quantity\u003c\/th\u003e\n\u003ctd\u003e1 Pcs \/ 5 Pcs (select above)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-faq\"\u003e\n\u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I choose the correct bore sizes (φd1 and φd2)?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMeasure the outer diameter of your motor shaft (φd1) and your load shaft or ballscrew end (φd2) with a caliper. Select the matching combination from the φd1 * φd2 option menu. Both bores can be the same size (e.g., 10mm * 10mm) or different (e.g., 8mm * 12mm) for mixed-shaft setups.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the torque capacity of this coupling?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eExact rated torque depends on the specific bore configuration and operating conditions. For a D44 double diaphragm coupling of this size, typical continuous torque capacity is in the range of 5–15 Nm. Contact us to confirm the rated torque for your specific bore selection and application.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs this coupling truly zero-backlash?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. The double diaphragm design transmits torque through thin stainless steel diaphragm discs that flex to accommodate misalignment without any rotational play. This makes it suitable for closed-loop servo systems and CNC axes where backlash would cause positioning error.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan this coupling handle angular and axial misalignment simultaneously?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. The double diaphragm configuration compensates for angular misalignment (typically 1–3°) and axial displacement (typically ±0.5–1.0mm) at the same time. Avoid exceeding these limits simultaneously, as combined misalignment reduces the effective capacity of each type.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs the aluminum body strong enough for industrial CNC use?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eAluminum alloy couplings are the standard choice for CNC routers, milling machines, and servo-driven linear axes because they offer an excellent strength-to-weight ratio. Lower rotational inertia compared to steel couplings improves servo response. For very high-torque or shock-load environments, contact us to discuss suitability.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between the 1-piece and 5-piece options?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eBoth options contain identical couplings. The 1-piece pack is ideal for single-machine builds, repairs, or prototyping. The 5-piece pack offers a lower per-unit cost and is suited for production runs, multi-axis machines, or maintaining a spare-parts inventory.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWill this coupling fit my specific servo motor brand?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eCompatibility depends on your motor's shaft diameter, not the brand. As long as your motor shaft diameter falls within the 8–22mm bore range offered, the coupling will fit. Verify the shaft diameter in your motor's datasheet and select the matching φd1 bore size.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your bore size (φd1 * φd2) and quantity above, then add to cart.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"HomeDIYer","offers":[{"title":"D44mm x L50mm \/ 8mm * 22mm \/ 1 Pcs","offer_id":52421731647762,"sku":"FOB08897x1","price":24.87,"currency_code":"USD","in_stock":true},{"title":"D44mm x L50mm \/ 8mm * 8mm \/ 1 Pcs","offer_id":52421731680530,"sku":"FOB08898x1","price":24.87,"currency_code":"USD","in_stock":true},{"title":"D44mm x L50mm \/ 9mm * 9mm \/ 1 Pcs","offer_id":52421731713298,"sku":"FOB08899x1","price":24.87,"currency_code":"USD","in_stock":true},{"title":"D44mm x L50mm \/ 10mm * 10mm \/ 1 Pcs","offer_id":52421731746066,"sku":"FOB08900x1","price":24.87,"currency_code":"USD","in_stock":true},{"title":"D44mm x L50mm \/ 11mm * 11mm \/ 1 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Coupler","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eD32 Single Diaphragm Flexible Shaft Coupling for CNC Servomotors\u003c\/h2\u003e\n\u003cp\u003eWhen misalignment between a servo motor and a lead screw causes vibration, lost steps, or premature bearing wear, the coupling is often the first component to blame. Engineers and machine builders working on CNC routers, laser engravers, 3D printers, and precision automation systems need a coupling that absorbs angular and axial misalignment without sacrificing torque transmission accuracy — and that is exactly what this single diaphragm design delivers.\u003c\/p\u003e\n\u003cp\u003eThis flexible shaft coupling features an aluminum alloy body with a stainless steel single diaphragm flexing element. The outer diameter is D32mm (approximately 1.26 inches) and the body length is L29mm (approximately 1.14 inches). Bore sizes (φd1 × φd2) range from 6mm to 14mm on each side, covering the most common servo and stepper motor shaft diameters. Clamping is achieved via split-clamp collar design with set screws for secure shaft retention.\u003c\/p\u003e\n\u003cp\u003eTypical use cases include connecting NEMA 23\/34 servo motors to ball screws on CNC milling machines, coupling stepper motors to lead screws on gantry-style routers, and linking encoder shafts to drive shafts in precision motion control systems where zero-backlash flexible shaft coupling performance is required.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e⚙️\u003c\/span\u003e Compatible with NEMA 17, NEMA 23, and NEMA 34 servo and stepper motor shafts with bore diameters φ6mm–φ14mm. Verify your motor and lead screw shaft diameters before selecting a variant.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These Flexible Shaft Couplings\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-list\"\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e \u003cstrong\u003eSingle Diaphragm Flexing Element\u003c\/strong\u003e — Stainless steel diaphragm absorbs angular, axial, and parallel misalignment while maintaining consistent torque transmission without backlash.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🏗️\u003c\/span\u003e \u003cstrong\u003eAluminum Alloy Body\u003c\/strong\u003e — Lightweight yet rigid aluminum construction reduces rotational inertia, making it well-suited for high-speed servo and stepper motor applications.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e \u003cstrong\u003eD32mm × L29mm Compact Form Factor\u003c\/strong\u003e — Outer diameter 32mm (≈1.26 in), body length 29mm (≈1.14 in) fits within tight machine enclosures and standard CNC axis configurations.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔧\u003c\/span\u003e \u003cstrong\u003eWide Bore Range φ6–14mm\u003c\/strong\u003e — Both bore ends (φd1 and φd2) are independently selectable from 6mm to 14mm, accommodating mixed shaft diameter pairings across servo motors and ball screws.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔒\u003c\/span\u003e \u003cstrong\u003eSplit-Clamp Collar with Set Screws\u003c\/strong\u003e — Secure shaft retention via split-clamp design prevents slippage under dynamic load reversals typical in CNC servo drive cycles.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e \u003cstrong\u003eMulti-Pack Quantity Options\u003c\/strong\u003e — Available in 1, 3, 5, 10, and 15-piece packs, allowing builders to stock spares or outfit multi-axis machines in a single order.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — Flexible Shaft Coupling\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eCoupling Type\u003c\/th\u003e\n\u003ctd\u003eSingle Diaphragm Flexible Shaft Coupling\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOuter Diameter (D)\u003c\/th\u003e\n\u003ctd\u003e32mm (≈1.26 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBody Length (L)\u003c\/th\u003e\n\u003ctd\u003e29mm (≈1.14 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Diameter φd1\u003c\/th\u003e\n\u003ctd\u003e6mm – 14mm (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Diameter φd2\u003c\/th\u003e\n\u003ctd\u003e6mm – 14mm (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBody Material\u003c\/th\u003e\n\u003ctd\u003eAluminum Alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDiaphragm Material\u003c\/th\u003e\n\u003ctd\u003eStainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eClamping Method\u003c\/th\u003e\n\u003ctd\u003eSplit-clamp collar with set screws\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBacklash\u003c\/th\u003e\n\u003ctd\u003eZero backlash (diaphragm design)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMisalignment Compensation\u003c\/th\u003e\n\u003ctd\u003eAngular, axial, and parallel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eQuantity per Pack\u003c\/th\u003e\n\u003ctd\u003e1 \/ 3 \/ 5 \/ 10 \/ 15 Pcs (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight (per piece)\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-faq\"\u003e\n\u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I choose the correct bore sizes (φd1 and φd2)?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMeasure the shaft diameter of your motor (φd1) and the shaft diameter of your lead screw or driven component (φd2) using a digital caliper. Select the variant that matches both measurements. The two bore ends can be different sizes — for example, a 6.35mm (1\/4 inch) motor shaft paired with an 8mm lead screw would use the 6mm × 8mm variant (6mm is the closest standard bore to 6.35mm; confirm fit before ordering).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between a single diaphragm and a double diaphragm coupling?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eA single diaphragm coupling uses one flexing disc to accommodate misalignment and is generally more compact and lower in inertia, making it suitable for most CNC servo and stepper motor applications. A double diaphragm coupling uses two discs and can handle greater angular misalignment but is longer. For standard CNC axis applications with well-aligned shafts, the single diaphragm design is the more common and cost-effective choice.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs this coupling truly zero-backlash?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. The diaphragm flexing element transmits torque through elastic deformation of the stainless steel disc rather than through mechanical contact between mating teeth or jaws. This eliminates the clearance gaps that cause backlash in jaw or oldham couplings, making diaphragm couplings the preferred choice for closed-loop servo systems where positional accuracy is critical.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat misalignment can this coupling tolerate?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eSingle diaphragm couplings of this size typically accommodate angular misalignment of approximately 1°–3° and axial displacement of typically 0.1–0.5mm. Exact values depend on operating speed and torque load. For best coupling life, align shafts as precisely as possible during installation and use the coupling's flexibility only to absorb residual misalignment, not as a substitute for proper alignment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWill this coupling fit my NEMA 23 or NEMA 34 servo motor?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eNEMA 23 motors commonly have 6.35mm (1\/4 in) or 8mm output shafts. NEMA 34 motors typically have 12mm or 14mm output shafts. Select the bore variant that matches your specific motor's shaft diameter. The D32mm outer diameter is compatible with standard NEMA 23 and NEMA 34 motor face clearances in most CNC machine designs.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use this coupling on a 3D printer or laser engraver?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. This coupling is well-suited for 3D printers using lead screw Z-axis drives and for laser engravers with servo or stepper-driven axes. The compact D32 × L29mm form factor fits within the tight clearances typical of desktop CNC and laser systems. Confirm your motor and lead screw shaft diameters match the available bore options before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I install and secure the coupling on the shaft?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eSlide each bore end onto the respective shaft until the shaft is flush with or slightly recessed from the inner face of the coupling body. Tighten the split-clamp set screws evenly using the appropriate hex key (typically M3 or M4 depending on bore size). Apply thread-locking compound to the set screws if the application involves frequent direction reversals or vibration. Do not overtighten, as this can deform the bore or damage the diaphragm.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your Dia. × Length, bore size (φd1 × φd2), and quantity above, then add to cart.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"HomeDIYer","offers":[{"title":"D32mm x L29mm \/ 6mm * 14mm \/ 1 Pcs","offer_id":52421739577618,"sku":"FOB08723x1","price":15.2,"currency_code":"USD","in_stock":true},{"title":"D32mm x L29mm \/ 6mm * 6mm \/ 1 Pcs","offer_id":52421739610386,"sku":"FOB08724x1","price":15.2,"currency_code":"USD","in_stock":true},{"title":"D32mm x L29mm \/ 7mm * 7mm \/ 1 Pcs","offer_id":52421739643154,"sku":"FOB08725x1","price":15.2,"currency_code":"USD","in_stock":true},{"title":"D32mm x L29mm \/ 8mm * 8mm \/ 1 Pcs","offer_id":52421739675922,"sku":"FOB08726x1","price":15.2,"currency_code":"USD","in_stock":true},{"title":"D32mm x L29mm \/ 9mm * 9mm \/ 1 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Engineers, makers, and machine builders who demand smooth, low-backlash power transmission need a coupling that absorbs shock without sacrificing torque accuracy. This aluminum jaw shaft coupler with a flexible plum spider insert is engineered for exactly that application.\u003c\/p\u003e\n\u003cp\u003eEach coupler consists of two precision-machined aluminum alloy hubs and a polyurethane spider (plum) insert seated between them. The outer diameter spans D20mm (0.79 in) to D95mm (3.74 in), with lengths from L25mm (0.98 in) to L126mm (4.96 in). Shaft bore compatibility ranges from 4mm to 55mm depending on the selected coupler dimension, covering the most common stepper motor and servo shaft sizes.\u003c\/p\u003e\n\u003cp\u003eTypical use cases include NEMA 17 and NEMA 23 stepper motor drives on FDM 3D printers and laser engravers, Z-axis and lead-screw connections on CNC milling machines, and servo-to-gearbox shaft connections in light industrial automation. The flexible spider insert accommodates angular, parallel, and axial misalignment, making this a reliable flexible plum jaw coupling for demanding motion control applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e⚙️\u003c\/span\u003e \u003cstrong\u003eCompatibility:\u003c\/strong\u003e Fits stepper motors (NEMA 14 \/ 17 \/ 23 \/ 34), servo motors, lead screws, and CNC spindle shafts. Shaft bore range 4mm–55mm (varies by coupler size). Confirm your motor shaft diameter and coupler OD before ordering.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These Aluminum Jaw Shaft Couplers\u003c\/h2\u003e\n\u003cul class=\"hdiy-list\"\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\u003cstrong\u003ePrecision Aluminum Hubs\u003c\/strong\u003e\u003cbr\u003eBoth hubs are CNC-machined from aluminum alloy for dimensional accuracy and a secure clamping fit on motor and driven shafts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🌟\u003c\/span\u003e\u003cstrong\u003eFlexible Plum Spider Insert\u003c\/strong\u003e\u003cbr\u003eThe polyurethane spider element absorbs vibration and shock loads, reducing noise and protecting connected components from impact damage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\u003cstrong\u003eWide Size Range\u003c\/strong\u003e\u003cbr\u003eAvailable from D20×L25mm up to D95×L126mm with shaft bore compatibility from 4mm to 55mm — one product line covers most stepper and servo motor applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e\u003cstrong\u003eMisalignment Tolerance\u003c\/strong\u003e\u003cbr\u003eAccommodates angular, parallel, and axial shaft misalignment, reducing stress on bearings and extending the service life of connected machinery.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚡\u003c\/span\u003e\u003cstrong\u003eLow Backlash Transmission\u003c\/strong\u003e\u003cbr\u003eThe interference-fit spider insert minimizes rotational play, maintaining positioning accuracy in CNC, 3D printing, and servo-driven systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e\u003cstrong\u003eMulti-Pack Options\u003c\/strong\u003e\u003cbr\u003eAvailable in packs of 1, 2, 3, or 5 pieces — stock up for multi-axis builds or keep spares on hand for maintenance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — Flexible Jaw Shaft Coupler\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eCoupler Type\u003c\/th\u003e\n\u003ctd\u003eJaw \/ Plum Spider (flexible)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHub Material\u003c\/th\u003e\n\u003ctd\u003eAluminum alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSpider Insert Material\u003c\/th\u003e\n\u003ctd\u003ePolyurethane (PU)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOuter Diameter (D)\u003c\/th\u003e\n\u003ctd\u003e20mm – 95mm (0.79 in – 3.74 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLength (L)\u003c\/th\u003e\n\u003ctd\u003e25mm – 126mm (0.98 in – 4.96 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShaft Bore Range\u003c\/th\u003e\n\u003ctd\u003e4mm – 55mm (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMisalignment Tolerance\u003c\/th\u003e\n\u003ctd\u003eAngular, parallel, and axial (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eClamp Style\u003c\/th\u003e\n\u003ctd\u003eSet screw (grub screw)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePack Quantity\u003c\/th\u003e\n\u003ctd\u003e1 \/ 2 \/ 3 \/ 5 pcs (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSurface Finish\u003c\/th\u003e\n\u003ctd\u003eNatural anodized \/ mill finish\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003ctd\u003e3D printers, CNC machines, stepper\/servo motor drives\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-faq\"\u003e\n\u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I choose the right coupler dimension for my stepper motor?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMatch the coupler's shaft bore range to your motor shaft diameter and your driven shaft diameter. For example, a NEMA 17 stepper typically has a 5mm shaft, so any coupler with a bore range that includes 5mm will fit. Then select the outer diameter (D) and length (L) that fits within your machine's available space. Refer to the variant options for the exact bore range of each coupler size.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the purpose of the plum spider insert?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe polyurethane spider insert sits between the two aluminum hubs and acts as a flexible element. It absorbs vibration and shock, accommodates minor shaft misalignment (angular, parallel, and axial), and reduces noise during operation. It also provides a degree of electrical isolation between the two shafts.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan this coupler handle angular and parallel misalignment?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. The flexible plum spider insert allows the coupler to tolerate angular misalignment (shafts at a slight angle), parallel misalignment (shafts offset laterally), and axial misalignment (shafts slightly apart or compressed). For best results, minimize misalignment during installation to extend the service life of the spider insert.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs this coupler suitable for 3D printer lead screw connections?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. This jaw coupling is widely used on 3D printer Z-axis lead screw connections. The flexible spider compensates for minor misalignment between the stepper motor shaft and the lead screw, reducing binding and improving print quality. Select the coupler dimension that matches your motor shaft and lead screw diameter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow is the coupler secured to the shaft?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eEach hub is secured using set screws (grub screws) that clamp onto the shaft. Tighten the set screws firmly with the appropriate hex key after aligning the coupler. For shafts with a flat (D-cut), align the set screw to the flat for a more secure grip and to prevent rotation under load.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWill the spider insert wear out, and can it be replaced?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe polyurethane spider insert can wear over time, especially under high-cycle or high-torque conditions. In most jaw couplings, the spider insert is a separate component that can be replaced without replacing the aluminum hubs. If you notice increased backlash or vibration, inspect the spider for wear and replace it as needed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between the various coupler sizes (D20 vs D40 vs D95)?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eLarger outer diameters (D) generally correspond to higher torque capacity and larger shaft bore ranges. Smaller couplers (D20–D25mm) are suited for light-duty applications such as small 3D printers and NEMA 14\/17 motors. Mid-range sizes (D30–D45mm) cover NEMA 23 motors and medium CNC axes. Larger sizes (D55–D95mm) are intended for NEMA 34 motors, servo drives, and heavier industrial applications. Always verify the shaft bore range for your selected size.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your Coupler Dimension, Shaft Diameter, and Pack Quantity above, then add to cart.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"HomeDIYer","offers":[{"title":"D 20mm x L 25mm \/ 4mm to 10mm \/ 1","offer_id":52421746950418,"sku":"GYWHLYXKJGK0003x1","price":4.61,"currency_code":"USD","in_stock":true},{"title":"D 20mm x L 30mm \/ 4mm to 10mm \/ 1","offer_id":52421746983186,"sku":"GYWHLYXKJGK0004x1","price":4.75,"currency_code":"USD","in_stock":true},{"title":"D 25mm x L 30mm \/ 5mm to 14mm \/ 1","offer_id":52421747015954,"sku":"GYWHLYXKJGK0005x1","price":5.02,"currency_code":"USD","in_stock":true},{"title":"D 25mm x L 35mm \/ 5mm to 14mm \/ 1","offer_id":52421747048722,"sku":"GYWHLYXKJGK0006x1","price":5.83,"currency_code":"USD","in_stock":true},{"title":"D 30mm x L 35mm \/ 5mm to 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5","offer_id":52421749047570,"sku":"GYWHLYXKJGK0015x5","price":84.71,"currency_code":"USD","in_stock":true},{"title":"D 45mm x L 78mm \/ 10mm to 25mm \/ 5","offer_id":52421749080338,"sku":"GYWHLYXKJGK0016x5","price":90.7,"currency_code":"USD","in_stock":true},{"title":"D 55mm x L 66mm \/ 12mm to 30mm \/ 5","offer_id":52421749113106,"sku":"GYWHLYXKJGK0017x5","price":110.15,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture12of31_a2f0ee7e-eca7-4b15-b1a3-3ba515ad9ffe.jpg?v=1783314797"},{"product_id":"servomotor-flexible-shaft-couplings-precision-d39-double-diaphragm-cnc-coupler","title":"Servomotor Flexible Shaft Couplings Precision D39 Double Diaphragm CNC Coupler","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eD39 Double Diaphragm CNC Shaft Coupler — Zero-Backlash Precision for Servo \u0026amp; Stepper Drives\u003c\/h2\u003e\n\u003cp\u003eWhen misalignment between a servo motor and a lead screw causes vibration, lost steps, or premature bearing wear, the coupling is almost always the culprit. Engineers and CNC builders who demand repeatable positioning accuracy need a coupling that eliminates backlash entirely while still absorbing the angular and axial misalignment that real-world assemblies produce. This D39 double diaphragm flexible shaft coupler is engineered for exactly that application.\u003c\/p\u003e\n\u003cp\u003eEach coupler consists of two precision-machined aluminum alloy hubs joined by a dual stainless-steel diaphragm pack. The outer diameter is 39 mm (≈1.54 in) and the overall length is 49 mm (≈1.93 in). Bore diameters span 8–19 mm (≈0.31–0.75 in) on both sides, with same-bore and mixed-bore configurations available to match your specific shaft pairing. Set screws secure each hub to its shaft.\u003c\/p\u003e\n\u003cp\u003eTypical use cases include CNC router Z-axis drives where axial stiffness prevents tool chatter, servo-driven ball screw assemblies on milling machines and laser cutters, and rotary encoder coupling on precision measurement rigs where zero-backlash transmission is non-negotiable.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e⚙️\u003c\/span\u003e \u003cstrong\u003eCompatibility:\u003c\/strong\u003e Fits NEMA 17, NEMA 23, and NEMA 34 stepper\/servo motor shafts with bore diameters 8–19 mm. Verify your motor shaft and lead screw shaft diameters before selecting a variant.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These D39 Double Diaphragm CNC Shaft Couplers\u003c\/h2\u003e\n\u003cul class=\"hdiy-list\"\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\u003cstrong\u003eTrue Zero-Backlash Design\u003c\/strong\u003e — Dual diaphragm construction transmits torque with no rotational play, preserving positioning accuracy in closed-loop servo systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\u003cstrong\u003eWide Bore Range (8–19 mm)\u003c\/strong\u003e — Same-bore and mixed-bore variants cover the most common servo motor and lead screw shaft combinations without adapters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e\u003cstrong\u003eStainless-Steel Diaphragm Pack\u003c\/strong\u003e — The flexible element resists fatigue and corrosion, maintaining consistent stiffness across temperature cycles typical of enclosed CNC enclosures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚖️\u003c\/span\u003e\u003cstrong\u003eLightweight Aluminum Alloy Hubs\u003c\/strong\u003e — Reduced rotational inertia allows faster acceleration and deceleration without overloading servo amplifiers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔧\u003c\/span\u003e\u003cstrong\u003eSet-Screw Clamping\u003c\/strong\u003e — Each hub is secured with radial set screws for straightforward installation and re-adjustment without special tooling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e\u003cstrong\u003eMulti-Pack Options (1 \/ 3 \/ 5 pcs)\u003c\/strong\u003e — Order a single coupler for a repair or a multi-pack for a full machine build or spare-parts inventory.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — D39 Double Diaphragm Shaft Coupler\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eCoupling Type\u003c\/th\u003e\n\u003ctd\u003eDouble Diaphragm Flexible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOuter Diameter (D)\u003c\/th\u003e\n\u003ctd\u003e39 mm (≈1.54 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOverall Length (L)\u003c\/th\u003e\n\u003ctd\u003e49 mm (≈1.93 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Diameter Range (φd1 \/ φd2)\u003c\/th\u003e\n\u003ctd\u003e8–19 mm (≈0.31–0.75 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHub Material\u003c\/th\u003e\n\u003ctd\u003eAluminum Alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFlexible Element Material\u003c\/th\u003e\n\u003ctd\u003eStainless Steel Diaphragm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eClamping Method\u003c\/th\u003e\n\u003ctd\u003eSet Screw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBacklash\u003c\/th\u003e\n\u003ctd\u003eZero\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMisalignment Compensation\u003c\/th\u003e\n\u003ctd\u003eAngular \u0026amp; Axial\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eQuantity per Order\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight (per piece)\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-faq\"\u003e\n\u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I choose the correct bore size for my application?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMeasure the shaft diameter of your motor (φd1) and the shaft diameter of your lead screw or driven component (φd2) with a digital caliper. Select the variant whose φd1 × φd2 combination matches your measurements. If both shafts are the same diameter, choose a same-bore variant (e.g., 10 mm × 10 mm). If they differ, choose the appropriate mixed-bore variant (e.g., 8 mm × 12 mm).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the torque capacity of this coupler?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe double diaphragm design is suited for servo and stepper motor applications in the light-to-medium duty range, typically up to the torque ratings of NEMA 17–34 motors. For exact torque figures for your specific bore and speed combination, contact us to confirm before ordering for high-load applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs this coupler resistant to corrosion?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. The flexible diaphragm element is stainless steel, which provides good resistance to moisture and mild chemical exposure. The aluminum alloy hubs are naturally oxide-coated. For highly corrosive environments (salt spray, strong acids), additional protective measures may be needed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWill this coupler work with my NEMA 23 stepper motor?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eNEMA 23 motors typically have 6.35 mm or 8 mm output shafts. This coupler's bore range starts at 8 mm, so it is compatible with standard 8 mm NEMA 23 shafts. Verify your motor's exact shaft diameter in its datasheet before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between a single diaphragm and a double diaphragm coupler?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eA single diaphragm coupler compensates primarily for angular misalignment. A double diaphragm coupler adds a second flexible element, which also accommodates axial (end-play) misalignment while maintaining higher torsional stiffness and zero backlash. This makes the double diaphragm design preferable for precision CNC and servo applications where both misalignment types are present.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I install the coupler onto the shafts?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eSlide each hub onto its respective shaft, aligning the set-screw hole with a flat on the shaft if present. Bring the shafts into alignment as closely as possible, then tighten the set screws with the appropriate hex key to the recommended torque for the screw size. Avoid over-tightening, which can deform the bore. Re-check alignment after initial run-in.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eShould I order 1, 3, or 5 pieces?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eOrder 1 piece for a single-axis repair or prototype build. Choose 3 pieces for a 3-axis CNC machine (X, Y, Z) in one order. The 5-piece pack is ideal for multi-axis machines or when you want spare couplers on hand for maintenance. Multi-pack pricing offers a lower per-unit cost compared to single-piece orders.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your bore size (φd1 × φd2) and quantity above, then add to cart.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"HomeDIYer","offers":[{"title":"D39mm x L49mm \/ 8mm * 19mm \/ 1 Pcs","offer_id":52421749145874,"sku":"FOB08884x1","price":37.6,"currency_code":"USD","in_stock":true},{"title":"D39mm x L49mm \/ 8mm * 8mm \/ 1 Pcs","offer_id":52421749178642,"sku":"FOB08885x1","price":37.6,"currency_code":"USD","in_stock":true},{"title":"D39mm x L49mm \/ 9mm * 9mm \/ 1 Pcs","offer_id":52421749211410,"sku":"FOB08886x1","price":37.6,"currency_code":"USD","in_stock":true},{"title":"D39mm x L49mm \/ 10mm * 10mm \/ 1 Pcs","offer_id":52421749244178,"sku":"FOB08887x1","price":37.6,"currency_code":"USD","in_stock":true},{"title":"D39mm x L49mm \/ 11mm * 11mm \/ 1 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Engineers, machinists, and DIY builders working on CNC routers, stepper motor assemblies, pump drives, and servo systems need a coupling that absorbs shock, compensates for minor shaft misalignment, and transmits torque reliably — without backlash buildup over time.\u003c\/p\u003e\n\u003cp\u003eThis spider jaw plum coupler is machined from aluminum alloy and consists of two jaw hubs paired with a polyurethane spider insert. The outer diameter is 35mm (≈1.38 in) with a body length of 50mm (≈1.97 in). Bore sizes range from 8mm to 19mm (≈0.31–0.75 in) for both φd1 and φd2, covering equal and stepped bore combinations to suit a wide range of shaft pairings.\u003c\/p\u003e\n\u003cp\u003eTypical applications include CNC axis drives requiring low-backlash shaft connection, pump-to-motor couplings in fluid handling systems, and stepper or servo motor shaft connections in automation and robotics builds. The jaw design accommodates angular, parallel, and axial misalignment while the spider element dampens vibration and protects connected components.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e⚙️\u003c\/span\u003e \u003cstrong\u003eCompatibility:\u003c\/strong\u003e Fits shafts with bore diameters from 8mm to 19mm. Outer diameter D35mm × body length L50mm. Suitable for CNC routers, stepper motors, servo motors, pumps, and general power transmission applications requiring flexible shaft coupling.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These Spider Jaw Plum Shaft Couplings\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-list\"\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e \u003cstrong\u003eAluminum Alloy Jaw Hubs\u003c\/strong\u003e\n\u003cp\u003eBoth coupling halves are machined from aluminum alloy for a balance of strength and reduced rotational inertia, keeping your drive system responsive.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🌀\u003c\/span\u003e \u003cstrong\u003ePolyurethane Spider Insert\u003c\/strong\u003e\n\u003cp\u003eThe jaw spider element absorbs shock loads and dampens vibration between connected shafts, protecting motors, encoders, and driven equipment from impact damage.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e \u003cstrong\u003eWide Bore Range: 8–19mm\u003c\/strong\u003e\n\u003cp\u003eAvailable in equal-bore (e.g., 10mm × 10mm) and stepped-bore (e.g., 8mm × 12mm) combinations, covering a broad range of motor and driven shaft diameters in a single product family.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🎯\u003c\/span\u003e \u003cstrong\u003eMisalignment Compensation\u003c\/strong\u003e\n\u003cp\u003eThe jaw-and-spider design accommodates angular misalignment (typically up to 1°), parallel offset, and axial displacement, reducing bearing load on connected shafts.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e \u003cstrong\u003eLow Backlash Transmission\u003c\/strong\u003e\n\u003cp\u003eThe interference fit between jaw teeth and spider lobes minimizes backlash, making this coupling suitable for positioning applications such as CNC axis drives and servo systems.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e \u003cstrong\u003eAvailable in 1, 3, or 5 Piece Quantities\u003c\/strong\u003e\n\u003cp\u003eOrder a single coupling for a repair or replacement, or stock up with 3- or 5-piece packs for multi-axis builds and workshop inventory.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — Spider Jaw Shaft Coupling\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eCoupling Type\u003c\/th\u003e\n\u003ctd\u003eSpider Jaw \/ Plum Coupler\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHub Material\u003c\/th\u003e\n\u003ctd\u003eAluminum Alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSpider Insert Material\u003c\/th\u003e\n\u003ctd\u003ePolyurethane (PU)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOuter Diameter (D)\u003c\/th\u003e\n\u003ctd\u003e35mm (≈1.38 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBody Length (L)\u003c\/th\u003e\n\u003ctd\u003e50mm (≈1.97 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Diameter φd1\u003c\/th\u003e\n\u003ctd\u003e8mm – 19mm (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Diameter φd2\u003c\/th\u003e\n\u003ctd\u003e8mm – 19mm (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Combination\u003c\/th\u003e\n\u003ctd\u003eEqual bore and stepped bore available\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eQuantity per Order\u003c\/th\u003e\n\u003ctd\u003e1 Pcs \/ 3 Pcs \/ 5 Pcs (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eApplicable Shaft Types\u003c\/th\u003e\n\u003ctd\u003eRound shafts with keyway or set screw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFastening Method\u003c\/th\u003e\n\u003ctd\u003eSet screw (grub screw)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-faq\"\u003e\n\u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I choose the correct bore size for my application?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMeasure the outer diameter of each shaft you need to connect. Select φd1 to match your driving shaft (e.g., motor shaft) and φd2 to match your driven shaft (e.g., lead screw or pump shaft). If both shafts are the same diameter, choose an equal-bore variant such as 10mm × 10mm. If they differ, select the appropriate stepped-bore combination from the variant options.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the maximum torque this coupling can handle?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eTorque capacity depends on bore size, set screw engagement, and the spider insert durometer. For light-duty CNC and stepper motor applications with shaft diameters in the 8–12mm range, these couplings are typically rated for torque loads in the range of 3–10 Nm. For higher-torque servo or pump applications, confirm your torque requirements against the bore size selected. Contact us to confirm suitability for demanding applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs this coupling suitable for CNC router axis drives?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. The jaw-and-spider design provides low backlash transmission, which is important for accurate positioning on CNC X, Y, and Z axes. The coupling compensates for minor shaft misalignment between the stepper motor and lead screw, reducing binding and bearing wear. It is widely used in DIY CNC builds and light industrial CNC machines.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow corrosion-resistant is the aluminum hub?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe aluminum alloy hubs offer good resistance to oxidation and light moisture exposure typical of workshop and indoor industrial environments. For applications involving water, coolant splash, or outdoor exposure, consider applying a light protective coating or selecting a stainless steel coupling for more demanding corrosion resistance requirements.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use this coupling with a servo motor?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes, spider jaw couplings are compatible with servo motors. The polyurethane spider element dampens torque spikes during rapid acceleration and deceleration cycles, protecting the servo encoder and gearbox. Ensure the bore size matches your servo shaft diameter and that the coupling's torque rating is appropriate for your servo's peak torque output.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between equal-bore and stepped-bore variants?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eEqual-bore variants (e.g., 10mm × 10mm) connect two shafts of the same diameter. Stepped-bore variants (e.g., 8mm × 12mm) connect shafts of different diameters, which is common when coupling a smaller motor shaft to a larger lead screw or pump shaft. Both variants share the same D35mm × L50mm outer dimensions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow is the coupling secured to the shaft?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eEach hub is secured to its shaft using set screws (grub screws) that clamp against the shaft surface. For improved torque transmission and to prevent slipping, a flat (keyway) ground on the shaft is recommended for higher-load applications. Ensure set screws are tightened to the appropriate torque using the correct hex key size.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your bore size (φd1 × φd2) and quantity above, then add to cart.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"HomeDIYer","offers":[{"title":"D35mm x L50mm \/ 8mm * 19mm \/ 1 Pcs","offer_id":52421756944658,"sku":"FOB08365x1","price":24.79,"currency_code":"USD","in_stock":true},{"title":"D35mm x L50mm \/ 08mm * 8mm \/ 1 Pcs","offer_id":52421756977426,"sku":"FOB08366x1","price":24.79,"currency_code":"USD","in_stock":true},{"title":"D35mm x L50mm \/ 09mm * 9mm \/ 1 Pcs","offer_id":52421757010194,"sku":"FOB08367x1","price":24.79,"currency_code":"USD","in_stock":true},{"title":"D35mm x L50mm \/ 10mm * 10mm \/ 1 Pcs","offer_id":52421757042962,"sku":"FOB08368x1","price":24.79,"currency_code":"USD","in_stock":true},{"title":"D35mm x L50mm \/ 11mm * 11mm \/ 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Pcs","offer_id":52421764514066,"sku":"FOB09918x5","price":123.26,"currency_code":"USD","in_stock":true},{"title":"D35mm x L50mm \/ 17mm * 19mm \/ 5 Pcs","offer_id":52421764546834,"sku":"FOB09919x5","price":123.26,"currency_code":"USD","in_stock":true},{"title":"D35mm x L50mm \/ 18mm * 19mm \/ 5 Pcs","offer_id":52421764579602,"sku":"FOB09920x5","price":123.26,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Main-05_30319aaa-16e6-4954-a88d-d4a0046a86cd.jpg?v=1783314913"},{"product_id":"cnc-shaft-coupler-flexible-jaw-coupling-spider-plum-14-20mm","title":"14\/20mm CNC Shaft Coupler Flexible Coupling Spider Splined Jaw Plum Pumps\/Motor","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eCNC Shaft Coupler Flexible Jaw Coupling — Precision Motion for Pumps \u0026amp; Motors\u003c\/h2\u003e\n\u003cp\u003eWhen misalignment between a motor shaft and a driven component causes vibration, noise, or premature wear, engineers and DIY machinists need a coupling that absorbs shock without sacrificing torque transmission. These flexible jaw spider shaft couplers are designed for CNC routers, stepper motor assemblies, pump drives, and general-purpose power transmission where bore sizes and shaft diameters vary across a build.\u003c\/p\u003e\n\u003cp\u003eEach coupler consists of two aluminum hubs and a polyurethane spider insert. The outer diameter (D) is available in 14 mm (~0.55 in) and 20 mm (~0.79 in), with lengths of 22 mm, 25 mm, and 30 mm depending on the variant. Bore combinations (φd1 × φd2) range from 3 mm up to 10 mm, covering the most common stepper and servo motor shaft sizes used in hobby and light-industrial CNC builds.\u003c\/p\u003e\n\u003cp\u003eTypical use cases include stepper-motor-to-leadscrew connections on CNC routers and 3D printer Z-axes, pump-to-motor shaft coupling in fluid transfer systems, and encoder or feedback device mounting in servo drive applications — all scenarios where a rigid coupling would transmit shock loads directly to bearings.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e⚙️\u003c\/span\u003e \u003cstrong\u003eCompatibility:\u003c\/strong\u003e Fits NEMA 17 \/ NEMA 23 stepper motors, standard servo motors, and most CNC router Z-axis leadscrews with shaft diameters from 3 mm to 10 mm. Verify your φd1 and φd2 bore sizes before ordering.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These Flexible Jaw Spider Shaft Couplers\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-list\"\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e \u003cstrong\u003eTwo-Piece Aluminum Hub Design\u003c\/strong\u003e\n\u003cp\u003eEach hub is machined from aluminum alloy for a lightweight yet rigid grip on the shaft. Set-screw clamping locks the bore securely without marring the shaft surface.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🕸️\u003c\/span\u003e \u003cstrong\u003ePolyurethane Spider Insert\u003c\/strong\u003e\n\u003cp\u003eThe six-jaw spider element absorbs torsional shock and compensates for angular, parallel, and axial misalignment — protecting motor bearings and extending drivetrain life.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e \u003cstrong\u003eWide Bore Range (3–10 mm)\u003c\/strong\u003e\n\u003cp\u003eAvailable in dozens of φd1 × φd2 bore combinations from 3 mm × 3 mm up to 10 mm × 10 mm, making it straightforward to match mismatched shaft diameters on both sides of the coupling.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e \u003cstrong\u003eFlexible Quantity Options\u003c\/strong\u003e\n\u003cp\u003eOrder as a single piece for prototyping or in packs of 5 or 10 for production runs and spare-parts inventory — all variants ship as complete coupler assemblies (two hubs + spider).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e \u003cstrong\u003eZero-Backlash Spider Engagement\u003c\/strong\u003e\n\u003cp\u003eThe jaw-and-spider geometry maintains near-zero backlash under normal operating loads, making these couplers suitable for position-critical CNC and encoder applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛠️\u003c\/span\u003e \u003cstrong\u003eTool-Free Spider Replacement\u003c\/strong\u003e\n\u003cp\u003eThe spider insert can be swapped without removing the hubs from the shafts, simplifying maintenance on assembled machines.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — Flexible Jaw Shaft Coupler\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eOuter Diameter (D)\u003c\/th\u003e\n\u003ctd\u003e14 mm (~0.55 in) or 20 mm (~0.79 in) — see variant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLength (L)\u003c\/th\u003e\n\u003ctd\u003e22 mm, 25 mm, or 30 mm — see variant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore 1 (φd1)\u003c\/th\u003e\n\u003ctd\u003eSee variant options (3–10 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore 2 (φd2)\u003c\/th\u003e\n\u003ctd\u003eSee variant options (3–10 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHub Material\u003c\/th\u003e\n\u003ctd\u003eAluminum alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSpider Material\u003c\/th\u003e\n\u003ctd\u003ePolyurethane (PU)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCoupling Type\u003c\/th\u003e\n\u003ctd\u003eFlexible jaw \/ spider (plum-type)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShaft Fixation\u003c\/th\u003e\n\u003ctd\u003eSet screw clamping\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMisalignment Tolerance\u003c\/th\u003e\n\u003ctd\u003eAngular: typically ±1°; Parallel: typically 0.2–0.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eQuantity per Order\u003c\/th\u003e\n\u003ctd\u003e1 Pcs \/ 5 Pcs \/ 10 Pcs — see variant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePackage Contents\u003c\/th\u003e\n\u003ctd\u003e2 × aluminum hubs + 1 × spider insert per coupler\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-faq\"\u003e\n\u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I choose the right Dia. x Length and bore combination?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eFirst measure the outer diameter of both shafts you need to connect (φd1 and φd2). Then select the overall coupler body size (D14 mm × L22 mm or D20 mm × L25\/30 mm) that fits within your available space. The D14 mm body suits smaller NEMA 17 builds; the D20 mm body is better for NEMA 23 or larger pump shafts. If both shafts are the same diameter, choose a symmetric bore option (e.g., 5 mm × 5 mm).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan this coupler handle angular and parallel misalignment simultaneously?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. The polyurethane spider insert accommodates a combination of angular misalignment (typically up to ±1°) and parallel offset (typically 0.2–0.5 mm). For best results, align shafts as closely as possible during installation — the spider is designed to compensate for residual misalignment, not to substitute for proper alignment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs there backlash, and does it affect CNC positioning accuracy?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eUnder normal operating loads the jaw-and-spider engagement produces near-zero backlash, making these couplers suitable for CNC router leadscrews and encoder shafts. Very high reversing torque loads can cause slight spider deflection; if sub-0.01 mm repeatability is critical, consider a rigid or bellows coupling instead.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWill the aluminum hubs corrode in a damp or outdoor environment?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eAluminum alloy has natural oxide-layer corrosion resistance suitable for most indoor and lightly humid environments. For prolonged outdoor or wet exposure, apply a light coat of anti-corrosion spray to the hub surfaces. The polyurethane spider is inherently resistant to moisture and mild oils.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat motors and machines are these couplers compatible with?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThese couplers are widely used with NEMA 17 and NEMA 23 stepper motors (common shaft diameters: 5 mm and 6.35 mm), servo motors, small DC gear motors, centrifugal pumps, and encoder mounting applications. Confirm your shaft diameters match the φd1 × φd2 bore option before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDo I need special tools to install or replace the spider insert?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eInstallation requires only a hex key (Allen wrench) to tighten the set screws on each hub. The spider insert slides between the jaws of the two hubs and can be replaced without removing the hubs from the shafts — simply loosen the set screws slightly, slide one hub back, swap the spider, and re-tighten.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eShould I order 1 Pcs, 5 Pcs, or 10 Pcs?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe 1 Pcs option is ideal for single-machine builds or testing a bore combination before committing to a larger order. The 5 Pcs pack suits small production runs or builds with multiple axes. The 10 Pcs pack offers the best per-unit value for batch production, repair stock, or workshop inventory.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your Dia. x Length, bore combination (φd1 × φd2), and quantity above, then add to cart.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"HomeDIYer","offers":[{"title":"D14mm x L22mm \/ 3mm * 8mm \/ 1 Pcs","offer_id":52421764645138,"sku":"FOB08296x1","price":12.23,"currency_code":"USD","in_stock":true},{"title":"D14mm x L22mm \/ 3mm * 3mm \/ 1 Pcs","offer_id":52421764677906,"sku":"FOB08297x1","price":12.23,"currency_code":"USD","in_stock":true},{"title":"D14mm x L22mm \/ 4mm * 4mm \/ 1 Pcs","offer_id":52421764710674,"sku":"FOB08298x1","price":12.23,"currency_code":"USD","in_stock":true},{"title":"D14mm x L22mm \/ 5mm * 5mm \/ 1 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Engineers and machine builders who demand repeatable positioning accuracy need a coupling that transmits torque without play while still absorbing angular and parallel offset — that is exactly what this D34 double diaphragm design delivers.\u003c\/p\u003e\n\u003cp\u003eEach coupling features a two-diaphragm flexible element sandwiched between precision-machined aluminum hubs. The outer diameter is 34 mm (1.34 in) and the body length is 45 mm (1.77 in). Bore combinations span φd1 × φd2 from 6 mm up to 14 mm on each side, covering both equal-bore and stepped-bore configurations. Set screws clamp each bore independently for secure shaft retention.\u003c\/p\u003e\n\u003cp\u003eTypical applications include CNC router Z-axis ball-screw couplings, servo-driven linear actuator connections, laser engraver spindle drives, and 3D printer lead-screw flexible shaft couplings where zero backlash and torsional stiffness are non-negotiable.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e⚙️\u003c\/span\u003e \u003cstrong\u003eCompatibility:\u003c\/strong\u003e Fits standard servo and stepper motor shafts with bore diameters from 6 mm to 14 mm. Verify your motor shaft diameter (φd1) and lead-screw diameter (φd2) before selecting a variant.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These D34 Double Diaphragm CNC Shaft Couplings\u003c\/h2\u003e\n\u003cul class=\"hdiy-list\"\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\u003cstrong\u003eZero-Backlash Double Diaphragm Design\u003c\/strong\u003e — Two stainless-steel diaphragm discs transmit torque with no rotational play, preserving positioning accuracy in closed-loop servo systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\u003cstrong\u003eWide Bore Range (6–14 mm)\u003c\/strong\u003e — Equal-bore and stepped-bore variants accommodate most servo and stepper motor shaft combinations without adapters or sleeves.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚖️\u003c\/span\u003e\u003cstrong\u003eLightweight Aluminum Hubs\u003c\/strong\u003e — Machined aluminum alloy body keeps rotating inertia low, reducing settling time and improving dynamic response in high-speed CNC axes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e\u003cstrong\u003eMisalignment Compensation\u003c\/strong\u003e — Accepts angular misalignment (typically up to 1°) and parallel offset (typically up to 0.2 mm) without transmitting bending loads to motor bearings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔧\u003c\/span\u003e\u003cstrong\u003eIndependent Set-Screw Clamping\u003c\/strong\u003e — Each hub bore is secured by its own set screw, allowing independent tightening and easy shaft removal during maintenance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e\u003cstrong\u003eMulti-Pack Options (1–10 pcs)\u003c\/strong\u003e — Available in quantities of 1, 2, 3, 5, or 10 pieces, making it straightforward to stock spares or outfit an entire machine build in one order.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — D34 Double Diaphragm Shaft Coupling\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eCoupling Type\u003c\/th\u003e\n\u003ctd\u003eDouble Diaphragm Flexible Coupling\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOuter Diameter (D)\u003c\/th\u003e\n\u003ctd\u003e34 mm (1.34 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBody Length (L)\u003c\/th\u003e\n\u003ctd\u003e45 mm (1.77 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Diameter φd1\u003c\/th\u003e\n\u003ctd\u003e6 mm – 14 mm (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Diameter φd2\u003c\/th\u003e\n\u003ctd\u003e6 mm – 14 mm (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHub Material\u003c\/th\u003e\n\u003ctd\u003eAluminum Alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDiaphragm Material\u003c\/th\u003e\n\u003ctd\u003eStainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBacklash\u003c\/th\u003e\n\u003ctd\u003eZero (rigid torsional transmission)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAngular Misalignment\u003c\/th\u003e\n\u003ctd\u003eTypically up to 1°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eParallel Offset\u003c\/th\u003e\n\u003ctd\u003eTypically up to 0.2 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eClamping Method\u003c\/th\u003e\n\u003ctd\u003eSet Screw (per hub)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eQuantity per Order\u003c\/th\u003e\n\u003ctd\u003e1 \/ 2 \/ 3 \/ 5 \/ 10 pcs (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-faq\"\u003e\n\u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I choose the correct bore sizes for my application?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMeasure the diameter of your motor output shaft (this becomes φd1) and the diameter of your lead screw or driven shaft (this becomes φd2). Select the variant that matches both values. If both shafts are the same diameter, choose an equal-bore variant (e.g., 8 mm × 8 mm). If they differ, choose the appropriate stepped-bore variant (e.g., 6 mm × 10 mm).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the advantage of a double diaphragm coupling over a single diaphragm or jaw coupling?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eA double diaphragm coupling provides zero backlash and higher torsional stiffness than a jaw (spider) coupling, while still accommodating angular and parallel misalignment. Compared to a single diaphragm, the double diaphragm design handles greater angular misalignment and axial displacement without introducing bending moments into the motor bearings.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs this coupling suitable for high-speed CNC spindle or servo applications?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. The lightweight aluminum hubs minimize rotational inertia, making this coupling well-suited for servo-driven axes and stepper-motor lead-screw assemblies where fast acceleration and deceleration are required. For very high-RPM spindle applications (above approximately 3,000 RPM), confirm dynamic balance requirements with your system specifications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow corrosion-resistant is this coupling?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe aluminum alloy hubs offer good resistance to oxidation in typical workshop and indoor environments. The stainless-steel diaphragm elements provide additional corrosion resistance. For harsh environments involving coolant mist or high humidity, consider applying a light protective coating to the aluminum hubs.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use this coupling to connect shafts that are not perfectly aligned?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes — the double diaphragm element is designed to compensate for small angular misalignment (typically up to 1°) and parallel offset (typically up to 0.2 mm). However, for best service life and accuracy, align shafts as closely as possible before installation. Excessive misalignment beyond the rated tolerance will reduce coupling life and may transmit unwanted loads to motor bearings.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I install and secure the coupling on the shafts?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eSlide each hub onto its respective shaft until the shaft reaches the bottom of the bore. Tighten the set screw on each hub to the manufacturer's recommended torque using an appropriate hex key. Ensure the shaft surface is clean and free of oil before tightening. Do not over-tighten, as this may deform the bore or damage the shaft.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat quantity option should I order for a single machine build?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eA typical 3-axis CNC router or laser engraver requires one coupling per driven axis, so a 3-piece order covers a full build. The 5-piece and 10-piece options offer a lower per-unit cost and provide spares for future maintenance or additional machine builds.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your Dia. × Length, bore size (φd1 × φd2), and quantity above, then add to cart.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"HomeDIYer","offers":[{"title":"D34mm x L45mm \/ 6mm * 14mm \/ 1 Pcs","offer_id":52421772280082,"sku":"FOB08874x1","price":28.75,"currency_code":"USD","in_stock":true},{"title":"D34mm x L45mm \/ 6mm * 6mm \/ 1 Pcs","offer_id":52421772312850,"sku":"FOB08875x1","price":28.75,"currency_code":"USD","in_stock":true},{"title":"D34mm x L45mm \/ 7mm * 7mm \/ 1 Pcs","offer_id":52421772345618,"sku":"FOB08876x1","price":28.75,"currency_code":"USD","in_stock":true},{"title":"D34mm x L45mm \/ 8mm * 8mm \/ 1 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Pcs","offer_id":52421779620114,"sku":"FOB13208x10","price":279.77,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Main-03_59c6e7df-635b-4179-bf0a-020fbc84d087.jpg?v=1783316017"},{"product_id":"servomotor-flexible-shaft-couplings-precision-d56-single-diaphragm-cnc-coupler","title":"Servomotor Flexible Shaft Couplings Precision D56 Single Diaphragm CNC Coupler","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eD56 Single Diaphragm CNC Shaft Coupling — Zero-Backlash Precision for Servomotor Drives\u003c\/h2\u003e\n\u003cp\u003eWhen a misaligned shaft causes vibration, lost steps, or premature bearing wear, the coupling between your motor and lead screw is often the culprit. This D56 single diaphragm flexible shaft coupling is engineered for CNC machine builders, robotics integrators, and motion-control engineers who need a rigid-yet-forgiving connection between a servomotor and a driven shaft — without sacrificing positional accuracy.\u003c\/p\u003e\n\u003cp\u003eEach coupling features an outer diameter of 56 mm (2.20 in) and a body length of 45 mm (1.77 in). The single stainless-steel diaphragm flexes to accommodate angular, parallel, and axial misalignment while transmitting torque with near-zero backlash. Bore combinations range from φd1 10 mm to φd2 28 mm (0.39–1.10 in), covering a wide range of motor shaft and lead-screw diameters. The aluminum alloy body is lightweight and corrosion-resistant, making it suitable for both dry and lightly lubricated environments.\u003c\/p\u003e\n\u003cp\u003eTypical applications include CNC router Z-axis drives, servo-driven ball-screw stages, laser engraver gantry systems, and precision indexing tables where angular misalignment compensation and torsional stiffness must coexist. The diaphragm design also makes these couplings a reliable choice for stepper-to-lead-screw connections in 3D printer upgrades and DIY CNC conversions.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e⚙️\u003c\/span\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Fits standard servo and stepper motor shafts with bore diameters φd1 10–28 mm and driven shafts φd2 10–28 mm. Outer diameter D56 mm, body length L45 mm. Verify shaft diameters before ordering.\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These D56 Single Diaphragm CNC Shaft Couplings\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-list\"\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\n\u003cstrong\u003eZero-Backlash Diaphragm Design\u003c\/strong\u003e\n\u003cp\u003eThe single stainless-steel diaphragm transmits torque without play, preserving positional accuracy in closed-loop servo and stepper systems.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\n\u003cstrong\u003eWide Bore Range\u003c\/strong\u003e\n\u003cp\u003eAvailable in φd1 × φd2 combinations from 10 mm to 28 mm, accommodating most standard motor shaft and lead-screw diameters without adapters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🪶\u003c\/span\u003e\n\u003cstrong\u003eLightweight Aluminum Alloy Body\u003c\/strong\u003e\n\u003cp\u003eThe anodized aluminum housing keeps rotational inertia low — critical for high-acceleration servo axes — while resisting corrosion in workshop environments.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e↔️\u003c\/span\u003e\n\u003cstrong\u003eMisalignment Compensation\u003c\/strong\u003e\n\u003cp\u003eAccommodates angular misalignment (typically up to 1°), parallel offset, and axial displacement, reducing bearing load and extending drivetrain life.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔧\u003c\/span\u003e\n\u003cstrong\u003eClamping Collar Retention\u003c\/strong\u003e\n\u003cp\u003eSplit-clamp collar design with set screws secures both shaft ends firmly, preventing slippage under reversing loads and direction changes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🏭\u003c\/span\u003e\n\u003cstrong\u003eBroad Application Compatibility\u003c\/strong\u003e\n\u003cp\u003eSuited for CNC routers, laser engravers, ball-screw stages, 3D printer upgrades, and any precision motion system requiring a flexible yet stiff shaft connection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — D56 Single Diaphragm Shaft Coupling\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eOuter Diameter (D)\u003c\/th\u003e\n\u003ctd\u003e56 mm (2.20 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBody Length (L)\u003c\/th\u003e\n\u003ctd\u003e45 mm (1.77 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Diameter φd1\u003c\/th\u003e\n\u003ctd\u003e10–28 mm (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Diameter φd2\u003c\/th\u003e\n\u003ctd\u003e10–28 mm (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCoupling Type\u003c\/th\u003e\n\u003ctd\u003eSingle Diaphragm Flexible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial — Body\u003c\/th\u003e\n\u003ctd\u003eAluminum Alloy (anodized)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial — Diaphragm\u003c\/th\u003e\n\u003ctd\u003eStainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBacklash\u003c\/th\u003e\n\u003ctd\u003eNear-zero\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAngular Misalignment\u003c\/th\u003e\n\u003ctd\u003eTypically up to 1°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRetention Method\u003c\/th\u003e\n\u003ctd\u003eSplit clamp with set screws\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eAnodized aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eQuantity per Order\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-faq\"\u003e\n\u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eHow do I choose the correct bore sizes (φd1 and φd2)?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eMeasure the diameter of your motor shaft (φd1) and your driven shaft or lead screw (φd2) with a caliper. Select the variant that matches both measurements exactly. The bore must match the shaft — do not rely on nominal motor frame sizes alone, as actual shaft diameters vary by manufacturer.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eCan this coupling handle both same-diameter and different-diameter shaft combinations?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. The product is available in both equal-bore variants (e.g., 12 mm × 12 mm) and mixed-bore variants (e.g., 10 mm × 16 mm), so you can connect a motor shaft and a lead screw of different diameters without an adapter sleeve.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the torque capacity of this coupling?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eExact rated torque depends on the specific bore combination and operating conditions. For a D56 single diaphragm coupling of this size, typical rated torque is in the range of 10–25 N·m. Contact us to confirm the rated torque for your specific variant and application before ordering for high-load drives.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eIs this coupling suitable for outdoor or humid environments?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThe anodized aluminum body offers good corrosion resistance for indoor workshop and light industrial use. The stainless-steel diaphragm resists rust. For prolonged outdoor exposure or immersion, additional protective measures are recommended. Contact us to confirm suitability for your specific environment.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWill this coupling work with both servo motors and stepper motors?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. The single diaphragm design is compatible with both servo and stepper motor shafts. Its near-zero backlash characteristic is particularly beneficial in closed-loop servo systems, while the misalignment compensation helps reduce bearing stress in stepper-driven lead-screw assemblies.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eHow do I install and secure the coupling on the shafts?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eSlide each end of the coupling onto the respective shaft until the shaft reaches the internal stop. Tighten the split-clamp set screws evenly using the appropriate hex key to the recommended torque. Ensure both shafts are aligned as closely as possible before final tightening to maximize diaphragm life and minimize vibration.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between a single diaphragm and a double diaphragm coupling?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eA single diaphragm coupling uses one flexible disc and is well-suited for applications with moderate misalignment and where axial stiffness is acceptable. A double diaphragm coupling uses two discs separated by a spacer, offering greater angular and axial misalignment capacity. For most CNC router and servo drive applications, a single diaphragm provides the right balance of stiffness and flexibility.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-cta\"\u003e\n🛒 Select your bore size combination (φd1 × φd2) above, then add to cart.\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I choose the correct bore sizes (φd1 and φd2)?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Measure the diameter of your motor shaft (φd1) and your driven shaft or lead screw (φd2) with a caliper. Select the variant that matches both measurements exactly.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can this coupling handle both same-diameter and different-diameter shaft combinations?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. The product is available in both equal-bore variants and mixed-bore variants, so you can connect a motor shaft and a lead screw of different diameters without an adapter sleeve.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the torque capacity of this coupling?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"For a D56 single diaphragm coupling of this size, typical rated torque is in the range of 10–25 N·m. Contact us to confirm for your specific variant.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is this coupling suitable for outdoor or humid environments?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The anodized aluminum body offers good corrosion resistance for indoor workshop and light industrial use. The stainless-steel diaphragm resists rust. For prolonged outdoor exposure, additional protective measures are recommended.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Will this coupling work with both servo motors and stepper motors?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. The single diaphragm design is compatible with both servo and stepper motor shafts, with near-zero backlash and misalignment compensation.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I install and secure the coupling on the shafts?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Slide each end onto the respective shaft, tighten the split-clamp set screws evenly with a hex key, and ensure shafts are aligned before final tightening.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the difference between a single diaphragm and a double diaphragm coupling?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"A single diaphragm coupling uses one flexible disc and suits moderate misalignment. A double diaphragm offers greater angular and axial capacity. 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coupling causes vibration, wobble, or power loss in your RC build, the entire drivetrain suffers. Hobbyists, makers, and RC enthusiasts who demand a clean, rattle-free connection between motor and drive shaft need a coupler that grips firmly and transfers torque without slip. These flexible shaft brass motor connector couplers deliver exactly that — a solid, rigid link engineered for the tight tolerances of RC cars, RC boats, and small motorized assemblies.\u003c\/p\u003e\n\u003cp\u003eEach coupler is machined from brass, offering a balance of machinability, corrosion resistance, and moderate weight suited to small-scale drivetrains. The rigid coupling body accepts two shaft diameters — an input side and an output side — spanning from 2mm to 6mm (approximately 0.079 in to 0.236 in). Set screws on each end lock the coupler firmly onto both shafts. Available in 24 model combinations and in quantities of 1, 5, or 10 pieces per order.\u003c\/p\u003e\n\u003cp\u003eTypical use cases include connecting a brushed or brushless motor shaft to a propeller shaft in RC boat builds, linking a motor output to a gearbox input shaft in RC car drivetrains, and serving as a shaft adapter in DIY robotics or small CNC axis assemblies where two different shaft diameters must be joined inline.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e🔧\u003c\/span\u003e \u003cstrong\u003eCompatibility:\u003c\/strong\u003e Fits motor and drive shafts from 2mm to 6mm (0.079\"–0.236\") in diameter. Verify both your motor shaft OD and drive shaft OD before selecting a model. Works with brushed motors, brushless motors, and small DC gear motors commonly used in RC cars, RC boats, and DIY robotics.\u003c\/div\u003e\n\u003ch2\u003e✅ Key Features of These Flexible Shaft Brass Motor Connector Couplers\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"hdiy-icon\"\u003e🔩\u003c\/div\u003e\n\u003cstrong\u003eRigid Brass Construction\u003c\/strong\u003e\n\u003cp\u003eMachined brass body provides firm torque transfer with no flex or slip between motor and drive shaft — ideal for RC drivetrains where alignment matters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"hdiy-icon\"\u003e📐\u003c\/div\u003e\n\u003cstrong\u003e24 Diameter Combinations\u003c\/strong\u003e\n\u003cp\u003eInput and output bore sizes range from 2mm to 6mm, covering the most common motor shaft and drive shaft diameters used in RC cars, RC boats, and small robotics.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"hdiy-icon\"\u003e🔒\u003c\/div\u003e\n\u003cstrong\u003eSet Screw Locking on Both Ends\u003c\/strong\u003e\n\u003cp\u003eEach end features a set screw that clamps directly onto the shaft, preventing rotation slip and axial movement under load during operation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"hdiy-icon\"\u003e⚖️\u003c\/div\u003e\n\u003cstrong\u003eCompact \u0026amp; Lightweight\u003c\/strong\u003e\n\u003cp\u003eSmall-diameter brass body keeps added mass minimal — important for RC builds where weight distribution and balance affect handling and speed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"hdiy-icon\"\u003e🛡️\u003c\/div\u003e\n\u003cstrong\u003eCorrosion-Resistant Brass Material\u003c\/strong\u003e\n\u003cp\u003eBrass naturally resists oxidation in humid or splash-prone environments, making these couplers a reliable choice for RC boat applications exposed to water.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"hdiy-icon\"\u003e📦\u003c\/div\u003e\n\u003cstrong\u003eFlexible Quantity Options\u003c\/strong\u003e\n\u003cp\u003eOrder 1, 5, or 10 pieces per model — stock up for a fleet build, a repair kit, or a single replacement without overpaying for unnecessary extras.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003e📐 Technical Specifications — Flexible Shaft Brass Motor Coupler\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eBrass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eInput Bore Diameter Range\u003c\/th\u003e\n\u003ctd\u003e2mm – 6mm (0.079\" – 0.236\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutput Bore Diameter Range\u003c\/th\u003e\n\u003ctd\u003e2mm – 6mm (0.079\" – 0.236\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAvailable Model Combinations\u003c\/th\u003e\n\u003ctd\u003e24 (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLocking Method\u003c\/th\u003e\n\u003ctd\u003eSet screw (both ends)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCoupling Type\u003c\/th\u003e\n\u003ctd\u003eRigid shaft coupler\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOuter Diameter\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOverall Length\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eNatural brass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCompatible Applications\u003c\/th\u003e\n\u003ctd\u003eRC car, RC boat, DIY robotics, small CNC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAvailable Quantities\u003c\/th\u003e\n\u003ctd\u003e1 Pcs \/ 5 Pcs \/ 10 Pcs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-faq\"\u003e\n\u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I choose the right model for my RC motor and drive shaft?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMeasure the outer diameter (OD) of your motor shaft and the OD of your drive shaft using a caliper. Then select the model that matches those two diameters — for example, \"3mm to 4mm\" means the input bore is 3mm and the output bore is 4mm. If both shafts are the same diameter, choose a same-size model such as \"3mm to 3mm\".\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs this a rigid coupling or a flexible coupling?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThis is a rigid coupling. It creates a solid, non-flexible connection between two shafts. This is ideal when your motor and drive shaft are well-aligned. If your application has angular or parallel misalignment, a flexible jaw coupler or spider coupler would be more appropriate.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWill brass hold up in an RC boat environment with water exposure?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. Brass has inherent corrosion resistance and performs well in splash or humid environments typical of RC boat use. It will not rust like steel. For prolonged submersion, applying a light coat of waterproof grease around the set screw area is recommended as a precaution.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat tool do I need to tighten the set screws?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe set screws are typically hex socket (Allen key) type. A metric hex key set is recommended. The exact hex key size depends on the set screw diameter, which varies by coupler model — typically 1.5mm to 2.5mm hex keys cover the range used in these small couplers. Contact us to confirm the exact size for your selected model.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use this coupler to connect a motor to a gearbox input shaft?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes, provided the motor output shaft diameter and the gearbox input shaft diameter match the bore sizes of your selected model. This is a common use case in RC car drivetrains and small motorized assemblies. Ensure both shafts have a flat or D-cut if you need maximum torque grip; round shafts rely solely on set screw clamping force.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhy should I order 5 or 10 pieces instead of just 1?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMulti-piece packs offer a lower per-unit cost and are practical if you are building multiple RC vehicles, maintaining a repair kit, or running a workshop. Couplers are wear items in high-use drivetrains, so having spares on hand avoids downtime when one needs replacement.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs this compatible with 1\/8\" (3.175mm) shafts common in North American RC parts?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. Several models include a 3.175mm bore, which corresponds to the 1\/8\" shaft diameter widely used in North American RC cars and boats. Look for models labeled \"3.175mm\" on either the input or output side to match your specific shaft combination.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your Model (input × output diameter) and Amount above, then add to cart.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"HomeDIYer","offers":[{"title":"2mm to 2mm \/ 1 Pcs","offer_id":52421785878802,"sku":"GYYKJSCS00141x1","price":2.01,"currency_code":"USD","in_stock":true},{"title":"2mm to 3mm \/ 1 Pcs","offer_id":52421785911570,"sku":"GYYKJSCS00131x1","price":2.01,"currency_code":"USD","in_stock":true},{"title":"2mm to 3.175mm \/ 1 Pcs","offer_id":52421785944338,"sku":"GYYKJSCS00129x1","price":2.01,"currency_code":"USD","in_stock":true},{"title":"2mm to 4mm \/ 1 Pcs","offer_id":52421785977106,"sku":"GYYKJSCS00133x1","price":2.01,"currency_code":"USD","in_stock":true},{"title":"2mm to 5mm \/ 1 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Size","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eAluminum Plum Flexible Shaft Coupling — Precision Motion for CNC \u0026amp; Stepper Motor Builds\u003c\/h2\u003e\n\u003cp\u003eWhen shaft misalignment or vibration throws off your CNC router, 3D printer, or motor-driven machine, the coupling is often the first thing to fail. Engineers, makers, and machine builders who demand consistent torque transmission and long service life rely on aluminum plum flexible shaft couplings to bridge the gap between motor and lead screw without sacrificing accuracy.\u003c\/p\u003e\n\u003cp\u003eEach coupling is machined from aluminum alloy with a polyurethane (PU) spider insert seated between the two hubs. Outer diameters range from 30 mm to 40 mm (~1.18\"–1.57\"), heights from 30 mm to 55 mm (~1.18\"–2.17\"), and inner bore sizes span 6 mm × 6 mm up to 19 mm × 19 mm (square bores) as well as mixed rectangular bores — covering the most common NEMA stepper motor shaft and lead-screw combinations. Set screws lock each hub securely onto the shaft.\u003c\/p\u003e\n\u003cp\u003eTypical applications include CNC router Z-axis lead-screw coupling, NEMA 17\/23 stepper motor to ball-screw connections, laser engraver axis drives, and light-duty servo motor linkages where angular and parallel misalignment compensation is needed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e⚙️\u003c\/span\u003e \u003cstrong\u003eCompatibility:\u003c\/strong\u003e Fits NEMA 17, NEMA 23, and similarly sized stepper motors. Verify your motor shaft diameter and lead-screw bore before selecting a model. See variant options for available OD \/ Height \/ ID combinations.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These Aluminum Plum Flexible Shaft Couplings\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-list\"\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e \u003cstrong\u003eDual-Hub Aluminum Construction\u003c\/strong\u003e\n\u003cp\u003eBoth hubs are machined from aluminum alloy for a lightweight yet rigid frame that resists deformation under continuous rotational load.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🌸\u003c\/span\u003e \u003cstrong\u003ePolyurethane Spider Insert\u003c\/strong\u003e\n\u003cp\u003eThe PU plum-shaped spider absorbs angular, parallel, and axial misalignment while dampening vibration — protecting both motor bearings and lead-screw nuts.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e \u003cstrong\u003eWide Size Range\u003c\/strong\u003e\n\u003cp\u003eOD 30 mm and 40 mm bodies with bore IDs from 6 × 6 mm to 19 × 19 mm cover the most common CNC and 3D-printer shaft pairings in a single product line.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔒\u003c\/span\u003e \u003cstrong\u003eSet-Screw Locking\u003c\/strong\u003e\n\u003cp\u003eRadial set screws on each hub clamp firmly onto flat-sided or round shafts, preventing slippage during direction reversals and rapid acceleration cycles.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔇\u003c\/span\u003e \u003cstrong\u003eVibration \u0026amp; Noise Damping\u003c\/strong\u003e\n\u003cp\u003eThe flexible spider decouples motor resonance from the driven axis, reducing audible noise and extending the service life of downstream mechanical components.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e \u003cstrong\u003eEasy Shaft Swap\u003c\/strong\u003e\n\u003cp\u003eSplit-hub design allows installation and removal without disassembling the full drive train — ideal for prototyping, maintenance, and iterative machine builds.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — Plum Flexible Shaft Coupling\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial — Hubs\u003c\/th\u003e\n\u003ctd\u003eAluminum alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial — Spider Insert\u003c\/th\u003e\n\u003ctd\u003ePolyurethane (PU)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOuter Diameter (OD)\u003c\/th\u003e\n\u003ctd\u003e30 mm (~1.18\") \/ 40 mm (~1.57\") — see variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeight\u003c\/th\u003e\n\u003ctd\u003e30–55 mm (~1.18\"–2.17\") — see variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eInner Bore (ID)\u003c\/th\u003e\n\u003ctd\u003e6×6 mm to 19×19 mm (square \u0026amp; rectangular) — see variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLocking Method\u003c\/th\u003e\n\u003ctd\u003eRadial set screws\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eNatural anodized aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMisalignment Tolerance\u003c\/th\u003e\n\u003ctd\u003eAngular: typically ±1°; Parallel: typically 0.2–0.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCompatible Motor Types\u003c\/th\u003e\n\u003ctd\u003eNEMA 17, NEMA 23 stepper motors; light-duty servo motors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eQuantity per Order\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-faq\"\u003e\n\u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I choose the right model for my stepper motor?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMatch the Inner Diameter (ID) of the coupling to your motor shaft size and lead-screw bore. For example, if your NEMA 17 motor has a 5 mm round shaft and your lead screw has an 8 mm diameter, select the variant whose ID pair covers those two dimensions. Check the \"Choose Model\" dropdown — each option lists OD, Height, and both bore IDs clearly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan this coupling handle angular and parallel shaft misalignment?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. The polyurethane spider insert is specifically designed to accommodate angular misalignment of typically ±1° and parallel (radial) misalignment of approximately 0.2–0.5 mm. For best results, minimize misalignment during installation to extend spider life and maintain positioning accuracy.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs the aluminum hub corrosion-resistant?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eAluminum alloy has natural oxidation resistance suitable for indoor workshop and enclosed machine environments. For high-humidity or outdoor applications, consider applying a light protective coating. The PU spider insert is also resistant to oils and mild solvents commonly found in machining environments.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWill the set screws work on a round shaft without a flat?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes, the set screws can grip round shafts, though adding a small flat (D-cut) to the shaft with a file significantly improves torque retention and prevents rotational slippage under load. For CNC and 3D-printer applications with moderate torque, round shafts typically work without modification.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between the OD 30 mm and OD 40 mm versions?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe OD 40 mm couplings are physically larger and generally accommodate larger bore IDs (up to 19 × 19 mm), making them suited for NEMA 23 motors and larger lead screws. The OD 30 mm versions are more compact and cover smaller bore combinations, ideal for NEMA 17 and space-constrained builds. Both share the same plum-spider design and locking mechanism.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I replace just the spider insert if it wears out?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe polyurethane spider is a separate component seated between the two hubs. In many cases it can be replaced independently without purchasing a new complete coupling — simply loosen the set screws, slide the hubs apart, swap the spider, and reassemble. Contact us to confirm spider availability for your specific model.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs this coupling suitable for high-speed spindle or servo applications?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThese couplings are designed for the moderate-speed, moderate-torque demands of CNC stepper motor and lead-screw drives. For high-speed spindle or high-torque servo applications, please contact us to confirm suitability, as maximum RPM and torque ratings vary by model size.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your model (OD \/ Height \/ ID) and quantity above, then add to cart.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"HomeDIYer","offers":[{"title":"OD:30mm Height：35mm ID：6.35x6.35mm \/ 1pcs","offer_id":52421788238098,"sku":"GLFBLFFBJT01258x1","price":21.95,"currency_code":"USD","in_stock":true},{"title":"OD:30mm Height：40mm ID：8x8mm \/ 1pcs","offer_id":52421788270866,"sku":"GLFBLFFBJT01260x1","price":21.95,"currency_code":"USD","in_stock":true},{"title":"OD:40mm Height：55mm ID：19x19mm \/ 1pcs","offer_id":52421788303634,"sku":"GLFBLFFBJT01262x1","price":28.49,"currency_code":"USD","in_stock":true},{"title":"OD:40mm Height：55mm ID：18x18mm \/ 1pcs","offer_id":52421788336402,"sku":"GLFBLFFBJT01264x1","price":28.49,"currency_code":"USD","in_stock":true},{"title":"OD:40mm Height：55mm ID：17x17mm \/ 1pcs","offer_id":52421788369170,"sku":"GLFBLFFBJT01266x1","price":28.49,"currency_code":"USD","in_stock":true},{"title":"OD:40mm Height：55mm ID：15x15mm \/ 1pcs","offer_id":52421788401938,"sku":"GLFBLFFBJT01267x1","price":28.49,"currency_code":"USD","in_stock":true},{"title":"OD:40mm Height：55mm ID：14x14mm \/ 1pcs","offer_id":52421788434706,"sku":"GLFBLFFBJT01268x1","price":28.49,"currency_code":"USD","in_stock":true},{"title":"OD:40mm Height：55mm ID：12x12mm \/ 1pcs","offer_id":52421788467474,"sku":"GLFBLFFBJT01269x1","price":28.49,"currency_code":"USD","in_stock":true},{"title":"OD:30mm Height：30mm ID：6x6mm \/ 1pcs","offer_id":52421788500242,"sku":"GLFBLFFBJT01270x1","price":21.95,"currency_code":"USD","in_stock":true},{"title":"OD:30mm Height：40mm ID：12x12mm \/ 1pcs","offer_id":52421788533010,"sku":"GLFBLFFBJT01271x1","price":21.95,"currency_code":"USD","in_stock":true},{"title":"OD:40mm Height：55mm ID：10x10mm \/ 1pcs","offer_id":52421788565778,"sku":"GLFBLFFBJT01272x1","price":28.49,"currency_code":"USD","in_stock":true},{"title":"OD:30mm Height：35mm ID：8x8mm \/ 1pcs","offer_id":52421788598546,"sku":"GLFBLFFBJT01273x1","price":18.84,"currency_code":"USD","in_stock":true},{"title":"OD:30mm Height：35mm ID：14x14mm \/ 1pcs","offer_id":52421788631314,"sku":"GLFBLFFBJT01274x1","price":21.95,"currency_code":"USD","in_stock":true},{"title":"OD:30mm Height：42mm ID：6x16mm \/ 1pcs","offer_id":52421788664082,"sku":"GLFBLFFBJT01276x1","price":22.74,"currency_code":"USD","in_stock":true},{"title":"OD:30mm Height：35mm ID：10x10mm \/ 1pcs","offer_id":52421788696850,"sku":"GLFBLFFBJT01277x1","price":21.95,"currency_code":"USD","in_stock":true},{"title":"OD:40mm Height：55mm ID：8x8mm \/ 1pcs","offer_id":52421788729618,"sku":"GLFBLFFBJT01278x1","price":28.49,"currency_code":"USD","in_stock":true},{"title":"OD:40mm Height：55mm ID：8x22mm \/ 1pcs","offer_id":52421788762386,"sku":"GLFBLFFBJT01279x1","price":28.49,"currency_code":"USD","in_stock":true},{"title":"OD:40mm Height：50mm ID：15x18mm \/ 1pcs","offer_id":52421788795154,"sku":"GLFBLFFBJT01280x1","price":28.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Main-03_aa5eb6e1-1c19-48e9-8281-ac0161a3226e.jpg?v=1783325670"},{"product_id":"30mm-cnc-flexible-shaft-coupling-spider-jaw-plum-coupler","title":"30mm CNC Flexible Shaft Coupling Spider Splined Jaw Plum Coupler Pumps Motor Alu","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003e30mm CNC Flexible Shaft Coupling — Spider Jaw Design for Precise Motion Control\u003c\/h2\u003e\n\u003cp\u003eWhen misalignment, vibration, or shaft runout causes premature wear on your CNC machine, pump, or motor drivetrain, the coupling is often the first component to fail. Engineers, machinists, and DIY builders who demand reliable torque transmission without rigid metal-to-metal contact need a coupling that absorbs shock while maintaining rotational accuracy. This 30mm spider jaw plum coupler is engineered for exactly that application.\u003c\/p\u003e\n\u003cp\u003eEach coupling consists of two aluminum alloy hubs and a polyurethane spider insert (plum element). The body diameter is 30mm (approximately 1.18 inches), available in two lengths — L35mm (~1.38 in) and L42mm (~1.65 in). Bore combinations (φd1 × φd2) range from 5mm × 5mm up to 16mm × 16mm, covering the most common shaft pairings in metric CNC and automation setups. Available in 1-piece or 5-piece quantities.\u003c\/p\u003e\n\u003cp\u003eTypical use cases include CNC router Z-axis and lead screw connections, stepper motor to ball screw couplings for 3D printers and engravers, pump shaft connections in fluid handling systems, and servo motor output shaft couplings in light industrial automation. Long-tail applications include flexible jaw coupling for NEMA 23 stepper, spider coupler for 8mm to 10mm shaft, and aluminum plum coupler for CNC ballscrew.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e⚙️\u003c\/span\u003e Compatible with metric shafts from 5mm to 16mm bore diameter. Fits standard CNC, stepper motor, servo motor, pump, and lead screw shaft configurations. Verify your φd1 and φd2 bore sizes before ordering.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These Spider Jaw Flexible Shaft Couplings\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-list\"\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\u003cstrong\u003eAluminum Alloy Hubs\u003c\/strong\u003e\u003cbr\u003eLightweight yet rigid hub bodies machined from aluminum alloy provide accurate bore concentricity and resist corrosion in workshop environments.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🌀\u003c\/span\u003e\u003cstrong\u003ePolyurethane Spider Insert\u003c\/strong\u003e\u003cbr\u003eThe flexible plum element absorbs angular, parallel, and axial misalignment while dampening vibration — protecting connected components from shock loads.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\u003cstrong\u003eTwo Body Lengths Available\u003c\/strong\u003e\u003cbr\u003eChoose D30mm × L35mm for compact installations or D30mm × L42mm for applications requiring greater spider element engagement and flexibility.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔧\u003c\/span\u003e\u003cstrong\u003eWide Bore Range\u003c\/strong\u003e\u003cbr\u003eBore combinations from 5mm × 5mm to 16mm × 16mm cover the majority of metric stepper motor, servo, and pump shaft pairings without custom machining.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚖️\u003c\/span\u003e\u003cstrong\u003eBalanced Torque Transmission\u003c\/strong\u003e\u003cbr\u003eThe three-jaw spider design distributes torque evenly across the coupling, reducing stress concentrations and extending service life under cyclic loading.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e\u003cstrong\u003eSingle or Multi-Pack Options\u003c\/strong\u003e\u003cbr\u003eAvailable in 1-piece for single-axis builds or 5-piece packs for multi-axis CNC machines, production setups, or spare parts inventory.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — Flexible Shaft Coupling\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBody Diameter (D)\u003c\/th\u003e\n\u003ctd\u003e30mm (~1.18 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBody Length (L)\u003c\/th\u003e\n\u003ctd\u003e35mm (~1.38 in) or 42mm (~1.65 in) — see variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Diameter φd1 × φd2\u003c\/th\u003e\n\u003ctd\u003e5mm–16mm × 5mm–16mm — see variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHub Material\u003c\/th\u003e\n\u003ctd\u003eAluminum alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSpider Insert Material\u003c\/th\u003e\n\u003ctd\u003ePolyurethane (PU)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCoupling Type\u003c\/th\u003e\n\u003ctd\u003eSpider jaw \/ plum \/ three-jaw flexible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eNatural anodized aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eQuantity per Pack\u003c\/th\u003e\n\u003ctd\u003e1 Pcs or 5 Pcs — see variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTorque Capacity\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMax RPM\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMisalignment Tolerance\u003c\/th\u003e\n\u003ctd\u003eAngular: typically ±1°; Parallel: typically 0.2–0.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-faq\"\u003e\n\u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I choose the right bore size combination?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMeasure the shaft diameters on both the driving side (motor\/pump) and the driven side (lead screw\/encoder). Select the φd1 × φd2 option that matches those two diameters. If both shafts are the same size, choose a matching pair such as 8mm × 8mm. Use the variant selector above to find your combination.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between the L35mm and L42mm body lengths?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe L35mm version is more compact and suited for tight installations where axial space is limited. The L42mm version provides a longer spider element engagement zone, which can offer slightly greater flexibility and vibration damping. Both share the same 30mm outer diameter and bore range.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan this coupling handle angular and parallel misalignment?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. The polyurethane spider insert accommodates angular misalignment of typically ±1° and parallel (radial) misalignment of approximately 0.2–0.5mm. It also handles minor axial displacement. For best results, align shafts as closely as possible — the coupling compensates for residual misalignment, not gross misalignment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs this coupling suitable for CNC stepper motor and ball screw connections?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. Spider jaw couplings are widely used in CNC routers, laser cutters, and 3D printers to connect NEMA 17 or NEMA 23 stepper motors to lead screws or ball screws. The flexible insert reduces backlash transmission and absorbs motor cogging vibration, improving positioning accuracy.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWill the aluminum hubs corrode in a workshop or outdoor environment?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eAluminum alloy has natural corrosion resistance due to its oxide layer. In typical indoor workshop conditions — including exposure to cutting fluids and light moisture — these hubs perform reliably. For highly corrosive or submerged environments, additional protective measures may be needed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I install and secure the coupling on the shaft?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eEach hub features a clamping screw (set screw) that locks onto the shaft. Slide each hub onto its respective shaft, align the spider insert between the two hubs, and tighten the set screws to the manufacturer's recommended torque. Ensure the spider element is fully seated in the jaw slots before final tightening. No special tools beyond a hex key are required.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I replace just the spider insert without replacing the entire coupling?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. The polyurethane spider insert is a separate component that sits between the two hubs. If the insert wears or degrades over time, you can replace it independently without replacing the aluminum hubs, reducing maintenance cost. Contact us to confirm insert availability for your specific coupling size.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your Dia. × Length, bore size (φd1 × φd2), and quantity above, then add to cart.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"HomeDIYer","offers":[{"title":"D30mm x L35mm \/ 5mm * 16mm \/ 1 Pcs","offer_id":52421788827922,"sku":"FOB08339x1","price":45.78,"currency_code":"USD","in_stock":true},{"title":"D30mm x L35mm \/ 06mm * 6mm \/ 1 Pcs","offer_id":52421788860690,"sku":"FOB08341x1","price":45.78,"currency_code":"USD","in_stock":true},{"title":"D30mm x L35mm \/ 11mm * 11mm \/ 1 Pcs","offer_id":52421788893458,"sku":"FOB08346x1","price":45.78,"currency_code":"USD","in_stock":true},{"title":"D30mm x L35mm \/ 13mm * 13mm \/ 1 Pcs","offer_id":52421788926226,"sku":"FOB08348x1","price":45.78,"currency_code":"USD","in_stock":true},{"title":"D30mm x L35mm \/ 14mm * 14mm 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When your coupling can't absorb angular or parallel offset, vibration transfers directly to your mechanics — causing positioning errors, premature bearing wear, and noisy operation. This flexible shaft coupling is engineered for DIYers and automation professionals who need a dependable, low-backlash connection between their stepper or servo motor and lead screw, encoder, or driven shaft.\u003c\/p\u003e\n\u003cp\u003eEach coupling is machined from aluminum alloy with a helical-cut flexible body that accommodates angular misalignment (typically ±1°–3°) and parallel offset (typically 0.2–0.5 mm). Available in outer diameters of D16, D18, and D25 mm (approximately 0.63\", 0.71\", and 0.98\"), with a range of bore combinations to suit common motor shaft and lead screw diameters. The clamping collar design ensures a secure, tool-accessible connection without permanent modification to your shafts.\u003c\/p\u003e\n\u003cp\u003eIdeal for CNC router Z-axis and X\/Y-axis lead screw connections, stepper motor to encoder shaft coupling in closed-loop systems, and 3D printer Z-axis flexible coupling upgrades where rigid couplers cause layer shifting. The helical slot design makes these couplings a go-to solution for flexible motor shaft coupler replacements in desktop CNC machines and DIY automation rigs.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e🔧\u003c\/span\u003e \u003cstrong\u003eCompatible with:\u003c\/strong\u003e NEMA 17 \u0026amp; NEMA 23 stepper motors, servo motors with standard shaft diameters, lead screws, encoders, and rotary shafts. Select your bore (φd1 × φd2) and outer diameter × length (D × L) from the variant options above.\u003c\/div\u003e\n\u003ch2\u003e✅ Key Features of These Flexible Shaft Couplings\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚙️\u003c\/span\u003e \u003cstrong\u003eHelical-Cut Flexible Body\u003c\/strong\u003e\n\u003cp\u003eThe precision helical slot allows the coupling to flex under angular and parallel misalignment, absorbing vibration before it reaches your mechanics and protecting bearings and encoders from shock loads.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e \u003cstrong\u003eDual Clamping Collar Design\u003c\/strong\u003e\n\u003cp\u003eEach end features a split-clamp collar secured by set screws, providing a firm grip on both shafts without requiring adhesive or permanent modification — easy to install and re-adjust.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🏗️\u003c\/span\u003e \u003cstrong\u003eAluminum Alloy Construction\u003c\/strong\u003e\n\u003cp\u003eMachined from lightweight aluminum alloy, these couplings offer a strong strength-to-weight ratio suitable for moderate-torque applications in CNC, 3D printing, and light automation systems.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e \u003cstrong\u003eMultiple Size Options\u003c\/strong\u003e\n\u003cp\u003eAvailable in outer diameters D16, D18, and D25 with a variety of bore combinations (φd1 × φd2), covering the most common stepper motor shaft and lead screw diameter pairings used in DIY CNC and robotics builds.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e \u003cstrong\u003eLow Backlash for Precision Motion\u003c\/strong\u003e\n\u003cp\u003eThe one-piece helical design minimizes rotational backlash compared to jaw-type or Oldham couplings, making these suitable for positioning applications where accuracy matters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛠️\u003c\/span\u003e \u003cstrong\u003eTool-Accessible Installation\u003c\/strong\u003e\n\u003cp\u003eSet screws are accessible with a standard hex key (Allen wrench). No special tooling required — slide onto shaft, align, and tighten. Suitable for workshop and field installation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003e📐 Technical Specifications — Flexible Shaft Coupling\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct Type\u003c\/th\u003e\n\u003ctd\u003eFlexible Helical Shaft Coupling\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eAluminum Alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOuter Diameter (D)\u003c\/th\u003e\n\u003ctd\u003eD16 \/ D18 \/ D25 mm (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLength (L)\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Diameter (φd1 × φd2)\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMisalignment Tolerance (Angular)\u003c\/th\u003e\n\u003ctd\u003eTypically ±1°–3°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMisalignment Tolerance (Parallel)\u003c\/th\u003e\n\u003ctd\u003eTypically 0.2–0.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFastening Method\u003c\/th\u003e\n\u003ctd\u003eDual clamping collar with set screws\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eNatural anodized aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTypical Application\u003c\/th\u003e\n\u003ctd\u003eCNC, 3D printer, stepper\/servo motor, encoder\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-faq\"\u003e\n\u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I choose the right bore size (φd1 × φd2) for my motor and lead screw?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMeasure the diameter of your motor shaft (φd1) and the shaft or lead screw you are connecting to (φd2) using a caliper. Common stepper motor shaft diameters are 5 mm and 6.35 mm; common lead screw diameters are 8 mm and 10 mm. Select the bore combination that matches both shafts exactly — a loose bore will cause slippage under load.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between D16, D18, and D25 outer diameters?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe outer diameter (D) affects the coupling's torque capacity and physical clearance in your build. D16 (≈0.63\") suits compact NEMA 17 setups with limited space. D18 (≈0.71\") offers a balance of torque and size. D25 (≈0.98\") is suited for NEMA 23 motors or higher-torque applications. Choose based on your motor frame size and available clearance around the coupling.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan this coupling handle both angular and parallel shaft misalignment?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. The helical-cut flexible body accommodates angular misalignment of typically ±1°–3° and parallel (radial) offset of approximately 0.2–0.5 mm. However, for best performance and longevity, align your shafts as closely as possible before tightening — the coupling is designed to absorb residual misalignment, not to compensate for large installation errors.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs this coupling suitable for high-speed or high-torque applications?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThese aluminum helical couplings are well-suited for moderate-torque, moderate-speed applications typical of CNC routers, 3D printers, and light automation. For very high torque or high-RPM industrial applications, please contact us to confirm suitability, as the helical slot design has inherent torque limits compared to solid rigid couplings.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWill this coupling corrode or degrade over time?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe aluminum alloy construction provides good resistance to oxidation in typical indoor workshop environments. The natural anodized finish adds a layer of surface protection. These couplings are not recommended for prolonged exposure to salt spray, strong acids, or highly humid outdoor environments without additional protective measures.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I install and secure the coupling on my motor shaft?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eSlide each end of the coupling onto the respective shaft, ensuring the shaft reaches fully into the bore. Align the shafts as closely as possible. Tighten the set screws on each clamping collar using a hex key (Allen wrench) to the appropriate torque — do not overtighten, as this can deform the bore. Check alignment once more after tightening and re-adjust if needed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use this coupling to connect two shafts of different diameters?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes — that is one of the key advantages of the dual-bore design. Each end of the coupling can accept a different shaft diameter (φd1 ≠ φd2), making it straightforward to connect a motor shaft to a lead screw or encoder shaft of a different size. Simply select the variant with the bore combination that matches your two shaft diameters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your Bore (φd1 × φd2) and Diameter × Length above, then add to cart.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"HomeDIYer","offers":[{"title":"2 x 2 \/ D16 L23","offer_id":52421795119378,"sku":"FASDGZCWJ1016x1","price":12.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture1of6_d43facb1-7ee7-4829-9728-028c4d38db72.jpg?v=1783325698"},{"product_id":"brass-flexible-shaft-coupling-rigid-coupler-motor-connector-cnc","title":"Brass Flexible Shaft Coupling Rigid Coupler Motor Connector CNC 2\/3\/3.17\/4\/5\/6mm","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eBrass Flexible Shaft Coupling — Precision Rigid Coupler for CNC \u0026amp; Motor Drives\u003c\/h2\u003e\n\u003cp\u003eWhen a misaligned or slipping shaft coupling causes your CNC axis to lose steps or your motor drive to vibrate under load, the root cause is almost always a coupler that can't hold tolerance. Machinists, robotics builders, and DIY automation enthusiasts who need a repeatable, zero-backlash connection between two shafts will find this brass rigid coupler a dependable solution.\u003c\/p\u003e\n\u003cp\u003eEach coupler is machined from brass, offering a balance of machinability, corrosion resistance, and moderate weight. The body accommodates two bore diameters simultaneously — input and output bores ranging from 2 mm (approx. 0.079 in) up to 6 mm (approx. 0.236 in) — making it suitable for mixed-shaft assemblies where the motor shaft and lead screw differ in diameter. Overall coupler length is typically 25–35 mm depending on bore combination; outer diameter is typically 12–20 mm. Exact dimensions vary by variant — see variant options for your specific combination.\u003c\/p\u003e\n\u003cp\u003eTypical use cases include NEMA 17\/23 stepper motor to lead screw connections on 3D printers and CNC routers, encoder shaft extensions on servo drives, and small DC gear-motor output shaft connections in robotics and automation rigs where a rigid, non-flexible coupling is preferred for positional accuracy.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e🔩\u003c\/span\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Fits stepper motors, servo motors, DC gear motors, and lead screws with shaft diameters of 2 mm, 2.3 mm, 3 mm, 3.17 mm (1\/8 in), 4 mm, 5 mm, or 6 mm. Select matching input and output bore from the variant options above.\n\u003c\/div\u003e\n\n\u003ch2\u003e✅ Key Features of These Brass Flexible Shaft Couplings\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔧\u003c\/span\u003e\n\u003cstrong\u003eDual-Bore Design\u003c\/strong\u003e\n\u003cp\u003eAccepts two different shaft diameters simultaneously — ideal for connecting a motor shaft to a lead screw or encoder of a different size without adapters.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚙️\u003c\/span\u003e\n\u003cstrong\u003eRigid Coupler Construction\u003c\/strong\u003e\n\u003cp\u003eSolid one-piece body transmits torque directly with minimal angular or radial play, supporting positional accuracy in CNC and motion-control applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🟡\u003c\/span\u003e\n\u003cstrong\u003eBrass Material\u003c\/strong\u003e\n\u003cp\u003eBrass construction provides good machinability for field modification, natural corrosion resistance in typical workshop environments, and a lower magnetic signature than steel couplers.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\n\u003cstrong\u003eWide Bore Range\u003c\/strong\u003e\n\u003cp\u003eAvailable in bore combinations spanning 2 mm to 6 mm (approx. 0.079–0.236 in), covering the most common shaft sizes used in hobby CNC, 3D printing, and small automation builds.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\n\u003cstrong\u003eSet-Screw Retention\u003c\/strong\u003e\n\u003cp\u003eSecured to each shaft via set screws (typically M3 or M4 depending on bore size), allowing tool-free removal and repositioning during prototyping or maintenance.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e\n\u003cstrong\u003eFlexible Quantity Options\u003c\/strong\u003e\n\u003cp\u003eAvailable in packs of 1, 3, 5, 10, 20, or 30 pieces — order a single coupler for a repair or stock up for a multi-axis build or production run.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003ch2\u003e📐 Technical Specifications — Brass Shaft Coupling\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eBrass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Diameter (Input)\u003c\/th\u003e\n\u003ctd\u003eSee variant options (2 mm \/ 2.3 mm \/ 3 mm \/ 3.17 mm \/ 4 mm \/ 5 mm \/ 6 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Diameter (Output)\u003c\/th\u003e\n\u003ctd\u003eSee variant options (2 mm \/ 3 mm \/ 3.17 mm \/ 4 mm \/ 5 mm \/ 6 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOuter Diameter\u003c\/th\u003e\n\u003ctd\u003eTypically 12–20 mm (varies by bore combination)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCoupler Length\u003c\/th\u003e\n\u003ctd\u003eTypically 25–35 mm (varies by bore combination)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRetention Method\u003c\/th\u003e\n\u003ctd\u003eSet screw (M3 or M4, varies by bore size)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCoupler Type\u003c\/th\u003e\n\u003ctd\u003eRigid (non-flexible)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eNatural brass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePack Quantity\u003c\/th\u003e\n\u003ctd\u003eSee variant options (1 \/ 3 \/ 5 \/ 10 \/ 20 \/ 30 pcs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCompatible Shaft Types\u003c\/th\u003e\n\u003ctd\u003eRound shafts with flat (D-cut) or round cross-section\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-faq\"\u003e\n\u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eHow do I choose the right bore diameter combination?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eSelect the bore that matches your motor shaft diameter as the input bore, and the bore that matches your lead screw or driven shaft as the output bore. For example, if your NEMA 17 stepper has a 5 mm shaft and your lead screw is 8 mm — that combination is not listed, so you would need an intermediate adapter. All available combinations are listed in the variant selector above.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eIs this a flexible or rigid coupling?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThis is a rigid coupler. It does not absorb angular or parallel misalignment between shafts. For best results, ensure your motor and driven shaft are well-aligned before installation. If your application requires misalignment compensation, consider a jaw-type or bellows flexible coupling instead.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWill brass corrode in a humid or outdoor environment?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eBrass has good natural corrosion resistance in typical indoor workshop and light industrial environments. In high-humidity or salt-air outdoor conditions, surface oxidation (patina) may develop over time but generally does not affect structural integrity. For harsh outdoor or marine environments, a stainless steel coupler would be a more suitable choice.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat set screw size is used to secure the shafts?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eSet screw size varies by bore diameter. Smaller bores (2–3 mm) typically use M3 set screws, while larger bores (4–6 mm) typically use M4 set screws. A standard hex key (Allen key) is used for tightening. We recommend applying a small amount of thread-locking compound for vibration-prone applications.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eCan I use this coupler on a 3D printer or CNC router?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. These couplers are commonly used to connect NEMA 17 stepper motor shafts (typically 5 mm) to T8 or T12 lead screws (typically 8 mm — note: 8 mm bore is not in this listing) or to other lead screw diameters available in the variant list. Check your motor shaft and lead screw diameters before ordering to confirm the correct bore combination.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eHow many pieces should I order for a multi-axis CNC build?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eA standard 3-axis CNC router or 3D printer typically requires 3 couplers (one per axis). A 4-axis machine needs 4. Ordering a 5-pack or 10-pack provides spares for future maintenance or prototyping. The per-unit cost decreases with larger pack quantities, so stocking up is cost-effective for multi-machine builds.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the maximum RPM or torque rating for this coupler?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eSpecific RPM and torque ratings depend on the bore combination and application conditions. As a general guide, brass rigid couplers in this size range are suitable for low-to-medium speed applications (typically up to 3,000–5,000 RPM) and light-to-moderate torque loads consistent with hobby CNC and small automation use. Contact us to confirm suitability for high-speed or high-torque applications.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-cta\"\u003e\n🛒 Select your Bore Diameter and Qty above, then add to cart.\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I choose the right bore diameter combination?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Select the bore that matches your motor shaft diameter as the input bore, and the bore that matches your lead screw or driven shaft as the output bore. All available combinations are listed in the variant selector above.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is this a flexible or rigid coupling?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"This is a rigid coupler. It does not absorb angular or parallel misalignment between shafts. Ensure your motor and driven shaft are well-aligned before installation.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Will brass corrode in a humid or outdoor environment?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Brass has good natural corrosion resistance in typical indoor workshop environments. In high-humidity or outdoor conditions, surface oxidation may develop but generally does not affect structural integrity.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What set screw size is used to secure the shafts?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Set screw size varies by bore diameter. Smaller bores (2–3 mm) typically use M3 set screws, while larger bores (4–6 mm) typically use M4 set screws.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I use this coupler on a 3D printer or CNC router?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. These couplers are commonly used to connect NEMA 17 stepper motor shafts to lead screws. Check your motor shaft and lead screw diameters before ordering to confirm the correct bore combination.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How many pieces should I order for a multi-axis CNC build?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"A standard 3-axis CNC router or 3D printer typically requires 3 couplers (one per axis). Ordering a 5-pack or 10-pack provides spares for future maintenance.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the maximum RPM or torque rating for this coupler?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Brass rigid couplers in this size range are suitable for low-to-medium speed applications (typically up to 3,000–5,000 RPM) and light-to-moderate torque loads consistent with hobby CNC and small automation use.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"HomeDIYer","offers":[{"title":"2mm to 2mm \/ 1 pcs","offer_id":52421795152146,"sku":"XFYXKJGK0126x1","price":2.52,"currency_code":"USD","in_stock":true},{"title":"2mm to 3mm \/ 1 pcs","offer_id":52421795184914,"sku":"XFYXKJGK0127x1","price":2.52,"currency_code":"USD","in_stock":true},{"title":"2mm to 4mm \/ 1 pcs","offer_id":52421795217682,"sku":"XFYXKJGK0128x1","price":2.52,"currency_code":"USD","in_stock":true},{"title":"2mm to 5mm \/ 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