{"product_id":"1-mod-45t-blue-nylon-spur-gear-6-20mm-bore-pinion-plastic-gear-step","title":"1 Mod 45 Teeth Blue Nylon Spur Gear Bore 6mm-20mm Pinion Plastic Gear with Step","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003e1 Mod 45-Tooth Blue Nylon Spur Gear — Lightweight Pinion with Stepped Bore for Precision Drives\u003c\/h2\u003e\n\u003cp\u003eWhen your motion system demands low noise, corrosion resistance, and a reliable mesh at Module 1, finding a spur gear that fits your shaft without custom machining is a real challenge. This 1 Mod 45-tooth blue nylon spur gear with a stepped bore is designed for hobbyists, robotics builders, and small-machine engineers who need a drop-in plastic pinion that mates cleanly with standard metal or nylon rack-and-pinion systems.\u003c\/p\u003e\n\u003cp\u003eEach gear is machined from engineering-grade blue nylon (PA66 or equivalent), offering a self-lubricating, low-friction tooth surface. The stepped bore accommodates shaft diameters from 6 mm (0.24 in) to 20 mm (0.79 in), with a pitch diameter of 45 mm (1.77 in) and an overall gear width typically in the 10–15 mm (0.39–0.59 in) range. Module 1 tooth geometry ensures direct interchangeability with any M1 rack, pinion, or mating gear in your drivetrain.\u003c\/p\u003e\n\u003cp\u003eTypical use cases include CNC router Z-axis drives, desktop 3D printer extruder idler stages, light-duty conveyor indexing systems, and educational robotics platforms where a quiet, non-sparking gear is required. The blue nylon construction also makes these gears ideal for food-adjacent or moisture-prone environments where metal gears would corrode.\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 Module 1 (1M) standard — meshes directly with any M1 rack, pinion, or mating spur gear. Bore options 6 \/ 8 \/ 10 \/ 12 \/ 14 \/ 15 \/ 16 \/ 17 \/ 18 \/ 19 \/ 20 mm. Verify shaft diameter and keyway requirements before ordering.\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These 1 Mod 45-Tooth Blue Nylon Spur Gears\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-list\"\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔵\u003c\/span\u003e\n\u003cstrong\u003eEngineering-Grade Nylon Construction\u003c\/strong\u003e\u003cbr\u003e\nMachined from PA66-class blue nylon for a self-lubricating, low-friction tooth surface that runs quietly against metal or plastic mating gears without added grease.\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\n\u003cstrong\u003eModule 1 — Universal Tooth Standard\u003c\/strong\u003e\u003cbr\u003e\n1M tooth geometry ensures direct interchangeability with any M1 rack, pinion, or spur gear. 45 teeth deliver a pitch diameter of 45 mm (1.77 in) for predictable gear ratio calculations.\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\n\u003cstrong\u003eWide Stepped Bore Range: 6–20 mm\u003c\/strong\u003e\u003cbr\u003e\nEleven bore sizes (6 \/ 8 \/ 10 \/ 12 \/ 14 \/ 15 \/ 16 \/ 17 \/ 18 \/ 19 \/ 20 mm) let you match your exact shaft diameter without custom boring or adapters.\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e\n\u003cstrong\u003eCorrosion-Resistant \u0026amp; Non-Sparking\u003c\/strong\u003e\u003cbr\u003e\nNylon resists moisture, mild chemicals, and oxidation — suitable for humid workshops, light food-adjacent machinery, and environments where metal gears would degrade.\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔇\u003c\/span\u003e\n\u003cstrong\u003eLow-Noise, Vibration-Damping Mesh\u003c\/strong\u003e\u003cbr\u003e\nThe inherent elasticity of nylon absorbs micro-shock loads and reduces gear whine, making these pinions a practical choice for noise-sensitive desktop machines and robotics.\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e\n\u003cstrong\u003eFlexible Pack Quantities: 1 \/ 2 \/ 5 PCS\u003c\/strong\u003e\u003cbr\u003e\nOrder a single gear for prototyping or a 5-piece pack for production runs and spares inventory — all shipped as a matched batch from the same production lot.\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 — 1 Mod 45T Nylon Spur Gear\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eModule\u003c\/th\u003e\n\u003ctd\u003e1 (M1)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of Teeth\u003c\/th\u003e\n\u003ctd\u003e45T\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePitch Diameter\u003c\/th\u003e\n\u003ctd\u003e45 mm (1.77 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePressure Angle\u003c\/th\u003e\n\u003ctd\u003e20°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Diameter\u003c\/th\u003e\n\u003ctd\u003e6 \/ 8 \/ 10 \/ 12 \/ 14 \/ 15 \/ 16 \/ 17 \/ 18 \/ 19 \/ 20 mm — See variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGear Face Width\u003c\/th\u003e\n\u003ctd\u003eSee variant options\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\u003eBore Style\u003c\/th\u003e\n\u003ctd\u003eStepped bore\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePack Quantity\u003c\/th\u003e\n\u003ctd\u003e1 PCS \/ 2 PCS \/ 5 PCS — See variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCompatible Standard\u003c\/th\u003e\n\u003ctd\u003eModule 1 (M1) metric\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 shaft?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eSelect the bore size that matches your shaft's outer diameter exactly. For example, if your motor shaft is 8 mm, choose the 8 mm bore variant. If your shaft has a keyway or flat, confirm the bore style accommodates it — these gears feature a stepped bore, so check the step dimensions against your shaft shoulder before ordering.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eCan this nylon gear mesh with a metal (steel or aluminum) M1 gear or rack?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. Module 1 is a universal metric tooth standard, so this 45T nylon spur gear will mesh correctly with any M1 steel, aluminum, or nylon rack, pinion, or mating spur gear. Nylon-on-metal pairings are common in light-duty drives because the softer nylon tooth acts as the sacrificial wear element, protecting the metal gear.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eHow strong is a nylon spur gear compared to a metal one?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eEngineering nylon (PA66-class) has a tensile strength typically in the 70–85 MPa range, which is sufficient for light-to-medium duty applications such as 3D printer drives, small CNC axes, and robotics. For high-torque or high-speed industrial applications, a steel or brass gear is more appropriate. If you are unsure whether nylon suits your torque load, contact us with your RPM and torque figures.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eDoes this gear resist moisture and corrosion?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. Nylon is inherently resistant to moisture, mild oils, and common workshop chemicals. It will not rust or oxidize. Note that prolonged submersion in water can cause slight dimensional swelling in nylon; for fully submerged applications, confirm dimensional tolerances are acceptable for your design.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eDo I need to lubricate these nylon gears?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eNylon is self-lubricating under most light-duty conditions, so additional grease is often unnecessary. For higher-speed or higher-load applications, a light PTFE-based dry lubricant can extend tooth life without attracting dust. Avoid petroleum-based greases that may degrade nylon over time.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between the 1 PCS, 2 PCS, and 5 PCS pack options?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eAll three pack options contain identical gears of the same bore size and module. The 1 PCS option is ideal for prototyping or single-axis builds. The 2 PCS pack suits dual-axis or mirrored drive configurations. The 5 PCS pack offers the best per-unit value for production runs, classroom kits, or maintaining a spares inventory.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eIs the stepped bore compatible with a set screw or grub screw?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThe gear hub is designed to accept a set screw for shaft retention. Confirm the hub wall thickness for your chosen bore size is sufficient for your set screw thread before assembly. If you need keyway or D-shaft compatibility, contact us to confirm before ordering.\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 and Packing QTY above, then add to cart.\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"HomeDIYer","offers":[{"title":"1M 45T \/ 6mm \/ 1 PCS","offer_id":52442831913234,"sku":"AdaahGLCDPJ00957x1","price":17.14,"currency_code":"USD","in_stock":true},{"title":"1M 45T \/ 6mm \/ 2 PCS","offer_id":52442831946002,"sku":"AdaahGLCDPJ00957x2","price":30.59,"currency_code":"USD","in_stock":true},{"title":"1M 45T \/ 6mm \/ 5 PCS","offer_id":52442831978770,"sku":"AdaahGLCDPJ00957x5","price":74.87,"currency_code":"USD","in_stock":true},{"title":"1M 45T \/ 8mm \/ 1 PCS","offer_id":52442832011538,"sku":"AdaahGLCDPJ00958x1","price":17.14,"currency_code":"USD","in_stock":true},{"title":"1M 45T \/ 8mm \/ 2 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