{"product_id":"1-mod-40-teeth-blue-nylon-spur-gear-bore-6mm-17mm-pinion-plastic-gear-with-step","title":"1 Mod 40 Teeth Blue Nylon Spur Gear Bore 6mm-17mm Pinion Plastic Gear with Step","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\n  \u003cdiv class=\"hdiy-overview\"\u003e\n    \u003ch2\u003e1 Mod 40-Tooth Blue Nylon Spur Gear — Lightweight Pinion Gear for Precision Drive Systems\u003c\/h2\u003e\n    \u003cp\u003eWhen your project demands a low-noise, corrosion-resistant gear that won't add unnecessary mass to your drivetrain, metal options often fall short. Hobbyists, robotics builders, and small-machine designers working with 1-module pitch systems need a reliable plastic pinion gear that fits standard shafts without custom machining. This 1 Mod 40-tooth blue nylon spur gear is engineered for exactly that use case.\u003c\/p\u003e\n    \u003cp\u003eEach gear is machined from engineering-grade blue nylon (PA66 or equivalent), offering a good balance of mechanical strength, low friction, and dimensional stability. The stepped bore design accommodates shaft diameters from 6mm to 17mm (approximately 0.24\" to 0.67\"), and the 1-module tooth profile ensures compatibility with standard metric gear systems. The 40-tooth count gives a pitch circle diameter of 40mm (≈1.57\").\u003c\/p\u003e\n    \u003cp\u003eTypical applications include 1 mod 40T spur gear for 3D printer extruder drives, small robotic arm joint gearing, DIY CNC axis transmission, and light-duty conveyor or automation prototyping where a plastic pinion gear with step bore is preferred over metal for weight and noise reduction.\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 1-module (1M) metric gear systems. Mates with 1M rack, pinion, or mating spur gears. Bore options 6mm–17mm suit most hobby and light-industrial motor shafts.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-features\"\u003e\n    \u003ch2\u003e✅ Key Features of These 1 Mod 40-Tooth Blue Nylon Spur Gears\u003c\/h2\u003e\n    \u003cul class=\"hdiy-list\"\u003e\n      \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔵\u003c\/span\u003e\u003cstrong\u003eEngineering-Grade Nylon Construction\u003c\/strong\u003e — Machined from PA66-class blue nylon for reliable mechanical performance, low friction operation, and resistance to moisture and mild chemicals.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\u003cstrong\u003eStepped Bore Design (6mm–17mm)\u003c\/strong\u003e — The stepped bore allows a single gear body to fit multiple shaft diameters (6 \/ 7 \/ 8 \/ 10 \/ 12 \/ 14 \/ 15 \/ 16 \/ 17mm), reducing the need for custom adapters.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚙️\u003c\/span\u003e\u003cstrong\u003eStandard 1-Module Tooth Profile\u003c\/strong\u003e — 40 teeth at Module 1 yield a 40mm pitch circle diameter, ensuring direct mesh compatibility with any standard 1M metric spur gear, rack, or pinion.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔇\u003c\/span\u003e\u003cstrong\u003eLow-Noise, Vibration-Damping Operation\u003c\/strong\u003e — Nylon's inherent elasticity absorbs minor misalignment and reduces gear mesh noise compared to metal-on-metal contact, ideal for quiet drive applications.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚖️\u003c\/span\u003e\u003cstrong\u003eLightweight for Weight-Sensitive Builds\u003c\/strong\u003e — Significantly lighter than equivalent steel or aluminum gears, making this 1M 40T plastic pinion gear well-suited for robotic arms, drones, and portable automation rigs.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e\u003cstrong\u003eFlexible Pack Quantities (1 \/ 2 \/ 5 PCS)\u003c\/strong\u003e — Available in single-piece, two-piece, or five-piece packs so you can order exactly what your project requires without overstocking.\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-table-wrap\"\u003e\n    \u003ch2\u003e📐 Technical Specifications — 1 Mod 40-Tooth Nylon Spur Gear\u003c\/h2\u003e\n    \u003ctable\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003cth\u003eModule (Mod)\u003c\/th\u003e\n\u003ctd\u003e1M\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eNumber of Teeth\u003c\/th\u003e\n\u003ctd\u003e40T\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003ePitch Circle Diameter\u003c\/th\u003e\n\u003ctd\u003e40mm (≈1.57\")\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003ePressure Angle\u003c\/th\u003e\n\u003ctd\u003e20° (standard metric)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eBore Diameter Options\u003c\/th\u003e\n\u003ctd\u003e6 \/ 7 \/ 8 \/ 10 \/ 12 \/ 14 \/ 15 \/ 16 \/ 17mm\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eBore Style\u003c\/th\u003e\n\u003ctd\u003eStepped bore\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eEngineering nylon (PA66-class)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eColor\u003c\/th\u003e\n\u003ctd\u003eBlue\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eGear Type\u003c\/th\u003e\n\u003ctd\u003eSpur gear (external tooth)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eFace Width\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eHub 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\u003ePacking Quantity\u003c\/th\u003e\n\u003ctd\u003e1 PCS \/ 2 PCS \/ 5 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\n    \u003cdetails\u003e\n      \u003csummary\u003eWhich bore size should I choose for my motor shaft?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eSelect the bore that matches your motor or drive shaft diameter exactly. Available options are 6mm, 7mm, 8mm, 10mm, 12mm, 14mm, 15mm, 16mm, and 17mm. The stepped bore design means the gear seats at the correct diameter without requiring a separate bushing. If your shaft is between listed sizes, a set screw or keyway adapter is recommended — contact us to confirm fit before ordering.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eCan this nylon gear handle the torque in my application?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eEngineering nylon (PA66-class) offers a tensile strength typically in the range of 70–85 MPa and is suitable for light-to-medium duty applications such as 3D printer drives, small robotic joints, and hobby CNC systems. For high-torque or continuous heavy-load applications, a metal gear would be more appropriate. If you are unsure, share your torque and RPM requirements with us and we can advise.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eIs this gear corrosion-resistant? Can I use it in damp environments?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. Nylon is inherently resistant to moisture, mild oils, and many common chemicals, making it a good choice for environments where metal gears would corrode. However, prolonged submersion in water can cause nylon to absorb moisture and slightly swell, which may affect dimensional tolerances. For fully wet or submerged applications, verify clearances before deployment.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWill this gear mesh correctly with my existing 1M metal spur gear or rack?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes, provided your existing gear or rack is also Module 1 (1M) with a standard 20° pressure angle. The 1M tooth profile is a universal metric standard, so this nylon gear will mesh directly with any conforming 1M metal or plastic gear, rack, or pinion without modification.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat is the pitch circle diameter and why does it matter?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eWith Module 1 and 40 teeth, the pitch circle diameter (PCD) is 40mm (≈1.57\"). The PCD determines the theoretical contact circle used to calculate center distance between meshing gears. To mesh two gears correctly, their center distance should equal half the sum of their PCDs. For example, pairing this 40T gear with a 20T gear (PCD 20mm) requires a center distance of (40 + 20) \/ 2 = 30mm.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eHow do I decide between ordering 1, 2, or 5 pieces?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eOrder 1 PCS for prototyping or single-axis builds. Choose 2 PCS if your design uses a gear pair or you want a spare on hand. The 5 PCS pack offers the best per-unit value for multi-axis machines, classroom projects, or batch production runs where consistent gear specs across multiple assemblies are required.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eDoes the blue color affect the gear's mechanical properties?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eNo. The blue pigment is a colorant added during the nylon compounding process and does not alter the material's mechanical strength, friction coefficient, or chemical resistance. The color serves as a visual identifier for module\/material type and has no functional impact on gear performance.\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 Modul \u0026amp; Teeth, Bore size, and Packing 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\": \"Which bore size should I choose for my motor shaft?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Select the bore that matches your motor or drive shaft diameter exactly. Available options are 6mm, 7mm, 8mm, 10mm, 12mm, 14mm, 15mm, 16mm, and 17mm. The stepped bore design means the gear seats at the correct diameter without requiring a separate bushing.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can this nylon gear handle the torque in my application?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Engineering nylon (PA66-class) offers a tensile strength typically in the range of 70–85 MPa and is suitable for light-to-medium duty applications such as 3D printer drives, small robotic joints, and hobby CNC systems.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is this gear corrosion-resistant? Can I use it in damp environments?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. Nylon is inherently resistant to moisture, mild oils, and many common chemicals. Prolonged submersion may cause slight dimensional changes due to moisture absorption.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Will this gear mesh correctly with my existing 1M metal spur gear or rack?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes, provided your existing gear or rack is also Module 1 (1M) with a standard 20° pressure angle. This nylon gear will mesh directly with any conforming 1M metal or plastic gear, rack, or pinion.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the pitch circle diameter and why does it matter?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"With Module 1 and 40 teeth, the pitch circle diameter (PCD) is 40mm (approximately 1.57 inches). Center distance to a mating gear equals half the sum of both PCDs.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I decide between ordering 1, 2, or 5 pieces?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Order 1 PCS for prototyping, 2 PCS for gear pairs or a spare, and 5 PCS for multi-axis machines or batch production runs.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Does the blue color affect the gear's mechanical properties?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"No. The blue pigment is a colorant only and does not alter the material's mechanical strength, friction coefficient, or chemical resistance.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"HomeDIYer","offers":[{"title":"1M 40T \/ 6mm \/ 1 PCS","offer_id":52442818904338,"sku":"AdaahGLCDPJ00864x1","price":14.89,"currency_code":"USD","in_stock":true},{"title":"1M 40T \/ 6mm \/ 2 PCS","offer_id":52442818937106,"sku":"AdaahGLCDPJ00864x2","price":25.3,"currency_code":"USD","in_stock":true},{"title":"1M 40T \/ 6mm \/ 5 PCS","offer_id":52442818969874,"sku":"AdaahGLCDPJ00864x5","price":56.83,"currency_code":"USD","in_stock":true},{"title":"1M 40T \/ 7mm \/ 1 PCS","offer_id":52442819002642,"sku":"AdaahDZ32650x1","price":14.58,"currency_code":"USD","in_stock":true},{"title":"1M 40T \/ 7mm \/ 2 PCS","offer_id":52442819035410,"sku":"AdaahDZ32650x2","price":24.68,"currency_code":"USD","in_stock":true},{"title":"1M 40T \/ 7mm \/ 5 PCS","offer_id":52442819068178,"sku":"AdaahDZ32650x5","price":55.34,"currency_code":"USD","in_stock":true},{"title":"1M 40T \/ 8mm \/ 1 PCS","offer_id":52442819100946,"sku":"AdaahGLCDPJ00865x1","price":14.89,"currency_code":"USD","in_stock":true},{"title":"1M 40T \/ 8mm \/ 2 PCS","offer_id":52442819133714,"sku":"AdaahGLCDPJ00865x2","price":25.3,"currency_code":"USD","in_stock":true},{"title":"1M 40T \/ 8mm \/ 5 PCS","offer_id":52442819166482,"sku":"AdaahGLCDPJ00865x5","price":56.83,"currency_code":"USD","in_stock":true},{"title":"1M 40T \/ 10mm \/ 1 PCS","offer_id":52442819199250,"sku":"AdaahGLCDPJ00866x1","price":14.89,"currency_code":"USD","in_stock":true},{"title":"1M 40T \/ 10mm \/ 2 PCS","offer_id":52442819232018,"sku":"AdaahGLCDPJ00866x2","price":25.3,"currency_code":"USD","in_stock":true},{"title":"1M 40T \/ 10mm \/ 5 PCS","offer_id":52442819264786,"sku":"AdaahGLCDPJ00866x5","price":56.83,"currency_code":"USD","in_stock":true},{"title":"1M 40T \/ 12mm \/ 1 PCS","offer_id":52442819297554,"sku":"AdaahGLCDPJ00867x1","price":14.89,"currency_code":"USD","in_stock":true},{"title":"1M 40T \/ 12mm \/ 2 PCS","offer_id":52442819330322,"sku":"AdaahGLCDPJ00867x2","price":25.3,"currency_code":"USD","in_stock":true},{"title":"1M 40T \/ 12mm \/ 5 PCS","offer_id":52442819363090,"sku":"AdaahGLCDPJ00867x5","price":56.83,"currency_code":"USD","in_stock":true},{"title":"1M 40T \/ 14mm \/ 1 PCS","offer_id":52442819395858,"sku":"AdaahGLCDPJ00868x1","price":14.89,"currency_code":"USD","in_stock":true},{"title":"1M 40T \/ 14mm \/ 2 PCS","offer_id":52442819428626,"sku":"AdaahGLCDPJ00868x2","price":25.3,"currency_code":"USD","in_stock":true},{"title":"1M 40T \/ 14mm \/ 5 PCS","offer_id":52442819461394,"sku":"AdaahGLCDPJ00868x5","price":56.83,"currency_code":"USD","in_stock":true},{"title":"1M 40T \/ 15mm \/ 1 PCS","offer_id":52442819494162,"sku":"AdaahGLCDPJ00869x1","price":14.89,"currency_code":"USD","in_stock":true},{"title":"1M 40T \/ 15mm \/ 2 PCS","offer_id":52442819526930,"sku":"AdaahGLCDPJ00869x2","price":25.3,"currency_code":"USD","in_stock":true},{"title":"1M 40T \/ 15mm \/ 5 PCS","offer_id":52442819559698,"sku":"AdaahGLCDPJ00869x5","price":56.83,"currency_code":"USD","in_stock":true},{"title":"1M 40T \/ 16mm \/ 1 PCS","offer_id":52442819592466,"sku":"AdaahGLCDPJ00870x1","price":14.89,"currency_code":"USD","in_stock":true},{"title":"1M 40T \/ 16mm \/ 2 PCS","offer_id":52442819625234,"sku":"AdaahGLCDPJ00870x2","price":25.3,"currency_code":"USD","in_stock":true},{"title":"1M 40T \/ 16mm \/ 5 PCS","offer_id":52442819658002,"sku":"AdaahGLCDPJ00870x5","price":56.83,"currency_code":"USD","in_stock":true},{"title":"1M 40T \/ 17mm \/ 1 PCS","offer_id":52442819690770,"sku":"AdaahGLCDPJ00871x1","price":14.89,"currency_code":"USD","in_stock":true},{"title":"1M 40T \/ 17mm \/ 2 PCS","offer_id":52442819723538,"sku":"AdaahGLCDPJ00871x2","price":25.3,"currency_code":"USD","in_stock":true},{"title":"1M 40T \/ 17mm \/ 5 PCS","offer_id":52442819756306,"sku":"AdaahGLCDPJ00871x5","price":56.83,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture3of8_a0f7ab55-be0c-4e1e-99fb-74288220a3d7.jpg?v=1783607311","url":"https:\/\/homediyer.com\/products\/1-mod-40-teeth-blue-nylon-spur-gear-bore-6mm-17mm-pinion-plastic-gear-with-step","provider":"HomeDIYer","version":"1.0","type":"link"}