{"product_id":"1-5-modulus-blue-nylon-spur-gear-flat-gears-12-to-100-teeth-6mm-8mm-10mm-bore","title":"1.5 Modulus Blue Nylon Spur Gear, Flat Gears 12 to 100 Teeth, 6mm\/8mm\/10mm Bore","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003e1.5 Modulus Blue Nylon Spur Gear — Lightweight Flat Gears for Precision DIY Drives\u003c\/h2\u003e\n\u003cp\u003eWhen your automation project demands quiet, corrosion-resistant power transmission without the weight penalty of metal, finding the right spur gear can be a real challenge. Hobbyists, makers, and small-workshop engineers building robots, conveyor systems, or custom 3D printer extruders need a gear that meshes cleanly, resists moisture, and won't strip under moderate loads — all without breaking the budget.\u003c\/p\u003e\n\u003cp\u003eThese 1.5 modulus blue nylon spur gears are machined from engineering-grade PA (polyamide) nylon, delivering a balance of toughness and self-lubrication. The flat gear profile spans 12 to 100 teeth, with pitch circle diameters ranging from approximately 18 mm (0.71 in) for the 12-tooth variant up to 150 mm (5.91 in) for the 100-tooth variant. Bore options of 6 mm, 8 mm, and 10 mm cover the most common motor and shaft sizes used in DIY automation.\u003c\/p\u003e\n\u003cp\u003eTypical use cases include low-noise gear reduction stages in desktop CNC machines, speed-ratio drives in educational robotics kits, and replacement flat gears in light-duty conveyor or feeder mechanisms where metal gears would cause excessive wear on mating plastic components.\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 standard 1.5M (module 1.5) gear systems. Verify bore diameter and tooth count against your shaft and mating gear before ordering.\u003c\/div\u003e\n\u003ch2\u003e✅ Key Features of These 1.5M Nylon Spur Gears\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔵\u003c\/span\u003e\u003cstrong\u003eEngineering-Grade Nylon\u003c\/strong\u003e\u003cp\u003ePA nylon construction provides self-lubrication, reducing friction and wear without added grease in light-duty applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔇\u003c\/span\u003e\u003cstrong\u003eLow-Noise Operation\u003c\/strong\u003e\u003cp\u003eNylon-on-metal or nylon-on-nylon meshing significantly dampens gear noise compared to all-metal drives — ideal for indoor or noise-sensitive builds.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\u003cstrong\u003eWide Tooth Range: 12–100 Teeth\u003c\/strong\u003e\u003cp\u003e48 tooth-count options in a single 1.5M module let you dial in your exact gear ratio without custom machining.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\u003cstrong\u003eThree Bore Sizes: 6 \/ 8 \/ 10 mm\u003c\/strong\u003e\u003cp\u003eFits the most common DIY motor shaft diameters straight out of the pack — no reaming required for standard shaft sizes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e\u003cstrong\u003eCorrosion-Resistant Material\u003c\/strong\u003e\u003cp\u003eNylon resists moisture, mild chemicals, and oxidation, making these gears suitable for humid workshop environments or light outdoor enclosures.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚖️\u003c\/span\u003e\u003cstrong\u003eLightweight Flat Profile\u003c\/strong\u003e\u003cp\u003eThe flat (non-helical) spur gear profile keeps axial thrust forces near zero, simplifying shaft and bearing selection in your drivetrain design.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — 1.5M Nylon Spur Gear\u003c\/h2\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eModule\u003c\/th\u003e\n\u003ctd\u003e1.5M\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTooth Count Range\u003c\/th\u003e\n\u003ctd\u003e12 to 100 teeth\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Diameter Options\u003c\/th\u003e\n\u003ctd\u003e6 mm \/ 8 mm \/ 10 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePitch Circle Diameter\u003c\/th\u003e\n\u003ctd\u003eSee variant options (= Module × Teeth)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGear Type\u003c\/th\u003e\n\u003ctd\u003eFlat spur gear (straight tooth)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eEngineering-grade PA nylon\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\u003ePressure Angle\u003c\/th\u003e\n\u003ctd\u003e20°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHub \/ Face Width\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\u003ctr\u003e\n\u003cth\u003eSurface Finish\u003c\/th\u003e\n\u003ctd\u003eSmooth machined nylon\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\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 tooth count for my gear ratio?\u003c\/summary\u003e\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eDivide the number of teeth on the driven gear by the number of teeth on the driving gear to get your reduction ratio. For example, pairing a 20-tooth driver with a 60-tooth driven gear gives a 3:1 reduction. Use our 12–100 tooth range to achieve ratios from roughly 1:1 up to about 8:1 in a single stage.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat bore size should I choose for my motor shaft?\u003c\/summary\u003e\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eMeasure your motor or drive shaft diameter with calipers. Select 6 mm bore for shafts up to 6 mm, 8 mm for shafts up to 8 mm, and 10 mm for shafts up to 10 mm. If your shaft is metric and falls between sizes, a keyway or set-screw collar can compensate for minor gaps — but an exact match is always recommended for best torque transfer.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eAre these gears strong enough for my application?\u003c\/summary\u003e\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003ePA nylon spur gears are well-suited for light-to-moderate torque applications such as robotics, 3D printer drives, small conveyors, and educational mechanisms. They are not recommended for high-torque industrial drives or applications with sustained shock loads. If your application exceeds moderate loads, consider metal spur gears instead.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWill nylon gears corrode or degrade in humid conditions?\u003c\/summary\u003e\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eNylon (PA) has good resistance to moisture and mild chemicals, making it suitable for humid workshop environments. Note that prolonged water immersion can cause slight dimensional swelling in nylon; for fully submerged or high-humidity continuous-duty applications, verify dimensional tolerances after conditioning.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I mesh a nylon spur gear with a metal gear?\u003c\/summary\u003e\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. Nylon-on-steel or nylon-on-aluminum meshing is a common design choice that reduces overall system noise and protects the more expensive metal gear from wear. Ensure both gears share the same module (1.5M) and pressure angle (20°) for correct meshing.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat is the difference between module and pitch, and does this gear match my existing set?\u003c\/summary\u003e\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eModule (M) is the metric standard for gear tooth size: Module = Pitch Circle Diameter ÷ Number of Teeth. These gears are Module 1.5. To confirm compatibility with your existing gears, verify they are also rated 1.5M with a 20° pressure angle. Imperial diametral pitch (DP) gears are not directly compatible with metric module gears.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eDo I need to add lubrication to nylon gears?\u003c\/summary\u003e\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eNylon is self-lubricating under light loads, so no grease is required for typical DIY use. For higher-speed or higher-load applications, a small amount of dry PTFE lubricant or light machine oil on the tooth flanks can extend service life without attracting dust the way heavy grease does.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your tooth count and bore size above, then add to cart.\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 tooth count for my gear ratio?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Divide the number of teeth on the driven gear by the number of teeth on the driving gear to get your reduction ratio. For example, pairing a 20-tooth driver with a 60-tooth driven gear gives a 3:1 reduction. Use our 12–100 tooth range to achieve ratios from roughly 1:1 up to about 8:1 in a single stage.\"}},{\"@type\":\"Question\",\"name\":\"What bore size should I choose for my motor shaft?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Measure your motor or drive shaft diameter with calipers. Select 6 mm bore for shafts up to 6 mm, 8 mm for shafts up to 8 mm, and 10 mm for shafts up to 10 mm. An exact match is always recommended for best torque transfer.\"}},{\"@type\":\"Question\",\"name\":\"Are these gears strong enough for my application?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"PA nylon spur gears are well-suited for light-to-moderate torque applications such as robotics, 3D printer drives, small conveyors, and educational mechanisms. 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For higher-speed or higher-load applications, a small amount of dry PTFE lubricant or light machine oil on the tooth flanks can extend service life.\"}}]}\u003c\/script\u003e","brand":"HomeDIYer","offers":[{"title":"1.5M 12 Teeth \/ 6mm \/ 1","offer_id":52443274051858,"sku":"LXDJGJXCD3177x1","price":13.57,"currency_code":"USD","in_stock":true},{"title":"1.5M 13 Teeth \/ 6mm \/ 1","offer_id":52443274084626,"sku":"LXDJGJXCD3178x1","price":13.57,"currency_code":"USD","in_stock":true},{"title":"1.5M 14 Teeth \/ 6mm \/ 1","offer_id":52443274117394,"sku":"LXDJGJXCD3179x1","price":13.57,"currency_code":"USD","in_stock":true},{"title":"1.5M 15 Teeth \/ 6mm \/ 1","offer_id":52443274150162,"sku":"LXDJGJXCD3180x1","price":13.57,"currency_code":"USD","in_stock":true},{"title":"1.5M 16 Teeth \/ 6mm \/ 1","offer_id":52443274182930,"sku":"LXDJGJXCD3181x1","price":11.4,"currency_code":"USD","in_stock":true},{"title":"1.5M 17 Teeth \/ 6mm \/ 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