{"product_id":"1-mod-42-teeth-blue-nylon-spur-gear-bore-6mm-17mm-pinion-plastic-gear-with-step","title":"1 Mod 42 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 42-Tooth Blue Nylon Spur Gear — Lightweight Stepped-Bore Pinion for Precision Drives\u003c\/h2\u003e\n\u003cp\u003eWhen your motion system demands a quiet, corrosion-resistant gear that won't add unnecessary mass, standard metal pinions become a liability. Engineers, robotics builders, and maker-space professionals working on low-to-medium torque drives need a reliable plastic spur gear that fits a range of shaft diameters without custom machining. This 1 Mod 42-tooth blue nylon spur gear with stepped bore is engineered for exactly that scenario.\u003c\/p\u003e\n\u003cp\u003eEach gear is machined from engineering-grade nylon (PA66), offering a balance of mechanical strength, self-lubrication, and dimensional stability. The module is 1 (Mod 1), tooth count is 42T, and the stepped bore accommodates shaft diameters from 6 mm (0.24 in) up to 17 mm (0.67 in) — covering the most common hobby and light-industrial shaft sizes. The blue color aids visual identification in multi-gear assemblies.\u003c\/p\u003e\n\u003cp\u003eTypical use cases include 3D printer extruder and axis drives requiring low-noise 1 Mod gearing, small robotic arm joints and wheeled-robot drivetrains where weight savings matter, and DIY CNC or automation projects pairing this pinion with a 1 Mod rack or mating spur gear for linear or rotary motion.\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 Mates with any standard Module 1 (Mod 1) spur gear, rack, or pinion. Bore sizes 6 \/ 8 \/ 10 \/ 12 \/ 14 \/ 15 \/ 16 \/ 17 mm. Verify shaft diameter and keyway requirements before ordering.\n\u003c\/div\u003e\n\n\u003ch2\u003e✅ Key Features of These 1 Mod 42-Tooth Nylon Spur Gears\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\n\u003cdiv\u003e\n\u003cdiv class=\"hdiy-icon\"\u003e🔵\u003c\/div\u003e\n\u003cstrong\u003eEngineering-Grade Nylon (PA66) Construction\u003c\/strong\u003e\n\u003cp\u003eMachined from PA66 nylon for a tensile strength of typically 80–85 MPa, outperforming standard ABS or POM in fatigue resistance under cyclic loading.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cdiv class=\"hdiy-icon\"\u003e🔇\u003c\/div\u003e\n\u003cstrong\u003eLow-Noise, Self-Lubricating Operation\u003c\/strong\u003e\n\u003cp\u003eNylon's inherent lubricity reduces friction against metal or plastic mating gears, cutting operational noise — ideal for desktop robotics and indoor automation.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cdiv class=\"hdiy-icon\"\u003e📐\u003c\/div\u003e\n\u003cstrong\u003eStepped Bore — 8 Shaft Sizes in One Design\u003c\/strong\u003e\n\u003cp\u003eThe stepped bore profile fits shafts from 6 mm to 17 mm (0.24\"–0.67\"), eliminating the need for separate gear SKUs for each shaft diameter in your build.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cdiv class=\"hdiy-icon\"\u003e⚖️\u003c\/div\u003e\n\u003cstrong\u003eLightweight for Weight-Sensitive Assemblies\u003c\/strong\u003e\n\u003cp\u003eNylon density (~1.14 g\/cm³) is roughly 7× lighter than steel, reducing rotational inertia and motor load in battery-powered or servo-driven systems.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cdiv class=\"hdiy-icon\"\u003e🛡️\u003c\/div\u003e\n\u003cstrong\u003eCorrosion-Resistant — No Rust, No Coating Required\u003c\/strong\u003e\n\u003cp\u003eUnlike steel gears, PA66 nylon is unaffected by moisture, mild chemicals, and humidity — suitable for lightly damp environments without surface treatment.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cdiv class=\"hdiy-icon\"\u003e📦\u003c\/div\u003e\n\u003cstrong\u003eFlexible Pack Quantities: 1, 2, or 5 Pieces\u003c\/strong\u003e\n\u003cp\u003eOrder a single gear for prototyping, a pair for mirrored drive systems, or a 5-pack for production runs and spare-parts inventory — all at consistent per-unit quality.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003ch2\u003e📐 Technical Specifications — 1 Mod 42T Nylon Spur Gear\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eModule (Mod)\u003c\/th\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of Teeth\u003c\/th\u003e\n\u003ctd\u003e42T\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePitch Diameter\u003c\/th\u003e\n\u003ctd\u003e42 mm (1.65 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutside Diameter (approx.)\u003c\/th\u003e\n\u003ctd\u003e44 mm (1.73 in)\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\u003eBore Diameter Options\u003c\/th\u003e\n\u003ctd\u003e6 \/ 8 \/ 10 \/ 12 \/ 14 \/ 15 \/ 16 \/ 17 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Type\u003c\/th\u003e\n\u003ctd\u003eStepped (plain bore; no keyway included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003ePA66 Engineering 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\u003eGear Type\u003c\/th\u003e\n\u003ctd\u003eSpur (straight tooth)\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 (select above)\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 (−22°F to +212°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCorrosion Resistance\u003c\/th\u003e\n\u003ctd\u003eYes — inherent nylon property\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 size for my shaft?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eMeasure your shaft's outer diameter with calipers and select the matching bore option (6, 8, 10, 12, 14, 15, 16, or 17 mm). The stepped bore is a plain (round) bore — if your shaft uses a keyway or set-screw flat, you will need to machine that feature yourself after receiving the gear.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the load capacity of this nylon spur gear?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003ePA66 nylon gears are suited for low-to-medium torque applications. Exact load ratings depend on operating speed, temperature, and mating gear material. For continuous high-torque or high-RPM applications, consider a metal Mod 1 gear instead. These gears perform well in robotics, 3D printers, and light automation at typical hobby-grade torque levels.\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. PA66 nylon does not rust and resists mild moisture and many common chemicals. It is suitable for lightly damp or humid environments. Avoid prolonged immersion in water or exposure to strong acids\/solvents, which can degrade nylon over time.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat gears or racks will this mesh with?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThis gear meshes with any standard Module 1 (Mod 1) spur gear or rack, regardless of material (nylon, acetal, aluminum, or steel), as long as the pressure angle is 20°. Confirm the mating component's module and pressure angle before ordering.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eDoes nylon require lubrication?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eNylon is self-lubricating, so dry operation is acceptable for most light-duty applications. Adding a small amount of dry PTFE spray or light grease can extend service life in higher-cycle or higher-load scenarios, but it is not mandatory for typical use.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eHow do I decide between 1 PCS, 2 PCS, and 5 PCS packs?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eChoose 1 PCS for prototyping or single-axis builds. Select 2 PCS for symmetrical drive systems (e.g., dual-motor robots or paired extruders). The 5 PCS pack offers the best per-unit value for production runs, classroom kits, or keeping spares on hand for ongoing projects.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the pitch diameter and outside diameter of this gear?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eFor a Mod 1 gear with 42 teeth: Pitch Diameter = Module × Teeth = 1 × 42 = 42 mm (1.65 in). Outside Diameter ≈ (Teeth + 2) × Module = 44 mm (1.73 in). These are standard gear geometry values and apply to all Mod 1 \/ 42T gears.\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 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\": \"How do I choose the correct bore size for my shaft?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Measure your shaft's outer diameter with calipers and select the matching bore option (6, 8, 10, 12, 14, 15, 16, or 17 mm). The stepped bore is a plain (round) bore — if your shaft uses a keyway or set-screw flat, you will need to machine that feature yourself after receiving the gear.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the load capacity of this nylon spur gear?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"PA66 nylon gears are suited for low-to-medium torque applications. Exact load ratings depend on operating speed, temperature, and mating gear material. For continuous high-torque or high-RPM applications, consider a metal Mod 1 gear instead.\"\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. PA66 nylon does not rust and resists mild moisture and many common chemicals. It is suitable for lightly damp or humid environments. Avoid prolonged immersion in water or exposure to strong acids\/solvents.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What gears or racks will this mesh with?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"This gear meshes with any standard Module 1 (Mod 1) spur gear or rack with a 20° pressure angle, regardless of material.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Does nylon require lubrication?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Nylon is self-lubricating, so dry operation is acceptable for most light-duty applications. Adding a small amount of dry PTFE spray or light grease can extend service life in higher-cycle scenarios.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I decide between 1 PCS, 2 PCS, and 5 PCS packs?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Choose 1 PCS for prototyping or single-axis builds. Select 2 PCS for symmetrical drive systems. The 5 PCS pack offers the best per-unit value for production runs or keeping spares on hand.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the pitch diameter and outside diameter of this gear?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Pitch Diameter = 42 mm (1.65 in). Outside Diameter ≈ 44 mm (1.73 in). These are standard Mod 1 \/ 42T gear geometry values.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"HomeDIYer","offers":[{"title":"1M 42T \/ 6mm \/ 1 PCS","offer_id":52442831094034,"sku":"AdaahGLCDPJ00905x1","price":15.22,"currency_code":"USD","in_stock":true},{"title":"1M 42T \/ 6mm \/ 2 PCS","offer_id":52442831126802,"sku":"AdaahGLCDPJ00905x2","price":27.81,"currency_code":"USD","in_stock":true},{"title":"1M 42T \/ 6mm \/ 5 PCS","offer_id":52442831159570,"sku":"AdaahGLCDPJ00905x5","price":65.81,"currency_code":"USD","in_stock":true},{"title":"1M 42T \/ 8mm \/ 1 PCS","offer_id":52442831192338,"sku":"AdaahGLCDPJ00906x1","price":15.22,"currency_code":"USD","in_stock":true},{"title":"1M 42T \/ 8mm \/ 2 PCS","offer_id":52442831225106,"sku":"AdaahGLCDPJ00906x2","price":27.81,"currency_code":"USD","in_stock":true},{"title":"1M 42T \/ 8mm \/ 5 PCS","offer_id":52442831257874,"sku":"AdaahGLCDPJ00906x5","price":65.81,"currency_code":"USD","in_stock":true},{"title":"1M 42T \/ 10mm \/ 1 PCS","offer_id":52442831290642,"sku":"AdaahGLCDPJ00907x1","price":15.22,"currency_code":"USD","in_stock":true},{"title":"1M 42T \/ 10mm \/ 2 PCS","offer_id":52442831323410,"sku":"AdaahGLCDPJ00907x2","price":27.81,"currency_code":"USD","in_stock":true},{"title":"1M 42T \/ 10mm \/ 5 PCS","offer_id":52442831356178,"sku":"AdaahGLCDPJ00907x5","price":65.81,"currency_code":"USD","in_stock":true},{"title":"1M 42T \/ 12mm \/ 1 PCS","offer_id":52442831388946,"sku":"AdaahGLCDPJ00908x1","price":15.22,"currency_code":"USD","in_stock":true},{"title":"1M 42T \/ 12mm \/ 2 PCS","offer_id":52442831421714,"sku":"AdaahGLCDPJ00908x2","price":27.81,"currency_code":"USD","in_stock":true},{"title":"1M 42T \/ 12mm \/ 5 PCS","offer_id":52442831454482,"sku":"AdaahGLCDPJ00908x5","price":65.81,"currency_code":"USD","in_stock":true},{"title":"1M 42T \/ 14mm \/ 1 PCS","offer_id":52442831487250,"sku":"AdaahGLCDPJ00909x1","price":15.22,"currency_code":"USD","in_stock":true},{"title":"1M 42T \/ 14mm \/ 2 PCS","offer_id":52442831520018,"sku":"AdaahGLCDPJ00909x2","price":27.81,"currency_code":"USD","in_stock":true},{"title":"1M 42T \/ 14mm \/ 5 PCS","offer_id":52442831552786,"sku":"AdaahGLCDPJ00909x5","price":65.81,"currency_code":"USD","in_stock":true},{"title":"1M 42T \/ 15mm \/ 1 PCS","offer_id":52442831585554,"sku":"AdaahDZ32651x1","price":14.84,"currency_code":"USD","in_stock":true},{"title":"1M 42T \/ 15mm \/ 2 PCS","offer_id":52442831618322,"sku":"AdaahDZ32651x2","price":28.52,"currency_code":"USD","in_stock":true},{"title":"1M 42T \/ 15mm \/ 5 PCS","offer_id":52442831651090,"sku":"AdaahDZ32651x5","price":64.31,"currency_code":"USD","in_stock":true},{"title":"1M 42T \/ 16mm \/ 1 PCS","offer_id":52442831683858,"sku":"AdaahDZ32652x1","price":14.84,"currency_code":"USD","in_stock":true},{"title":"1M 42T \/ 16mm \/ 2 PCS","offer_id":52442831716626,"sku":"AdaahDZ32652x2","price":28.52,"currency_code":"USD","in_stock":true},{"title":"1M 42T \/ 16mm \/ 5 PCS","offer_id":52442831749394,"sku":"AdaahDZ32652x5","price":64.31,"currency_code":"USD","in_stock":true},{"title":"1M 42T \/ 17mm \/ 1 PCS","offer_id":52442831782162,"sku":"AdaahDZ32653x1","price":14.84,"currency_code":"USD","in_stock":true},{"title":"1M 42T \/ 17mm \/ 2 PCS","offer_id":52442831814930,"sku":"AdaahDZ32653x2","price":28.52,"currency_code":"USD","in_stock":true},{"title":"1M 42T \/ 17mm \/ 5 PCS","offer_id":52442831847698,"sku":"AdaahDZ32653x5","price":64.31,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture3of8_1aa63f71-04d8-49a1-bf55-5f40be6e2110.jpg?v=1783614088","url":"https:\/\/homediyer.com\/products\/1-mod-42-teeth-blue-nylon-spur-gear-bore-6mm-17mm-pinion-plastic-gear-with-step","provider":"HomeDIYer","version":"1.0","type":"link"}