{"product_id":"steel-spur-motor-pinion-gear-1m17t-19mm-od-bore-4-10mm","title":"Steel Spur Motor Pinion Gear 1M17T Outer Dia 19mm Bore 4\/5\/6\/6.35\/8\/10mm x1Pcs","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\n  \u003cdiv class=\"hdiy-overview\"\u003e\n    \u003ch2\u003eSteel Spur Motor Pinion Gear 1M 17T — Reliable Power Transmission for RC, CNC \u0026amp; Robotics\u003c\/h2\u003e\n    \u003cp\u003eWhen a stripped or undersized pinion gear stalls your RC car, CNC router, or robotics project, every minute of downtime costs you. This 1 Module 17-Tooth steel spur motor pinion gear is engineered for hobbyists, makers, and engineers who need a dependable, drop-in replacement or upgrade gear that holds up under repeated load cycles.\u003c\/p\u003e\n    \u003cp\u003eMachined from carbon steel with a hardened finish, this pinion gear features a 19mm outer diameter and a 17-tooth involute profile at 1M (1 Module) pitch. The bore is available in 4mm, 5mm, 6mm, 6.35mm (1\/4\"), 7mm, 8mm, and 10mm to match a wide range of motor shaft diameters — from approximately 0.16\" to 0.39\". Overall gear width is typically 10–15mm depending on bore variant.\u003c\/p\u003e\n    \u003cp\u003eTypical use cases include motor pinion replacement on 1\/10 and 1\/8 scale RC vehicles, drive gear upgrades on desktop CNC machines and laser cutters, and torque transmission components in DIY robotics arms and automated mechanisms. Long-tail search terms this product covers: 1 mod 17 tooth steel pinion gear, RC motor pinion gear 19mm OD, 6.35mm bore spur gear replacement.\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 all 1 Module (1M) gear systems. Verify your motor shaft diameter matches the selected bore size before ordering.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-features\"\u003e\n    \u003ch2\u003e✅ Key Features of These Steel Spur Motor Pinion Gears\u003c\/h2\u003e\n    \u003cul class=\"hdiy-list\"\u003e\n      \u003cli\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\n        \u003cstrong\u003eCarbon Steel Construction\u003c\/strong\u003e\u003cbr\u003e\n        Machined from carbon steel for reliable strength and wear resistance across repeated load cycles in mechanical drive applications.\n      \u003c\/li\u003e\n      \u003cli\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\n        \u003cstrong\u003e1 Module \/ 17 Tooth Profile\u003c\/strong\u003e\u003cbr\u003e\n        Standard 1M involute tooth profile ensures smooth meshing with any compatible 1M rack, pinion, or spur gear in your drivetrain.\n      \u003c\/li\u003e\n      \u003cli\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e🎯\u003c\/span\u003e\n        \u003cstrong\u003e19mm Outer Diameter\u003c\/strong\u003e\u003cbr\u003e\n        Consistent 19mm OD across all bore variants for predictable gear ratio calculations and easy integration into existing gear trains.\n      \u003c\/li\u003e\n      \u003cli\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e\n        \u003cstrong\u003e7 Bore Sizes Available\u003c\/strong\u003e\u003cbr\u003e\n        Choose from 4mm, 5mm, 6mm, 6.35mm, 7mm, 8mm, or 10mm bore to match your specific motor shaft without adapters or shimming.\n      \u003c\/li\u003e\n      \u003cli\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e\n        \u003cstrong\u003eHardened Surface Finish\u003c\/strong\u003e\u003cbr\u003e\n        Surface treatment improves corrosion resistance and extends service life in both indoor workshop and outdoor RC environments.\n      \u003c\/li\u003e\n      \u003cli\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e\n        \u003cstrong\u003eSingle-Piece Pack (x1)\u003c\/strong\u003e\u003cbr\u003e\n        Each order includes one gear. Order multiple quantities for spare inventory or multi-axis builds.\n      \u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-table-wrap\"\u003e\n    \u003ch2\u003e📐 Technical Specifications — Spur Motor Pinion Gear\u003c\/h2\u003e\n    \u003ctable\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003cth\u003eModule\u003c\/th\u003e\n\u003ctd\u003e1M (1 Module)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eNumber of Teeth\u003c\/th\u003e\n\u003ctd\u003e17T\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eOuter Diameter\u003c\/th\u003e\n\u003ctd\u003e19mm (0.748\")\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eBore Diameter\u003c\/th\u003e\n\u003ctd\u003e4 \/ 5 \/ 6 \/ 6.35 \/ 7 \/ 8 \/ 10mm (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eGear Width\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eTooth Profile\u003c\/th\u003e\n\u003ctd\u003eInvolute\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\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eCarbon Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eHardened \/ Oxide\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eQuantity per Pack\u003c\/th\u003e\n\u003ctd\u003e1 piece\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eCompatible Pitch\u003c\/th\u003e\n\u003ctd\u003e1 Module (1M)\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 size for my motor shaft?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eMeasure your motor shaft diameter with a caliper. Select the bore size that matches exactly — for example, most 540-size RC motors use a 3.175mm (1\/8\") or 5mm shaft, while larger brushless motors often use 6.35mm (1\/4\") or 8mm shafts. If your shaft is imperial, the 6.35mm bore equals exactly 1\/4\".\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat does \"1 Module\" (1M) mean and will it mesh with my existing gears?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eModule is the metric standard for gear tooth size. A 1M gear has a tooth pitch of 3.14mm (π × 1mm). It will mesh correctly with any other 1M spur gear, rack, or pinion — regardless of tooth count — as long as the pressure angle also matches (standard 20°). Do not mix with 0.8M or 32DP gears as they are not compatible.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eIs this gear strong enough for high-torque RC or robotics applications?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThis gear is machined from carbon steel, which offers significantly higher shear strength than plastic or aluminum pinions. It is suitable for moderate-to-high torque applications such as 1\/10 and 1\/8 scale RC drivetrains, small CNC axis drives, and robotic arm joints. For extreme shock-load environments, consider using a set screw or keyway to secure the gear to the shaft.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eHow do I secure the gear to the motor shaft?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThis pinion gear is designed to be secured with a set screw (grub screw) tightened against the motor shaft. Ensure the bore matches your shaft diameter for a snug fit before tightening. For shafts with a flat (D-cut), align the set screw to the flat for maximum holding force. If your shaft is round, consider applying thread-lock compound to the set screw.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWill this gear rust or corrode outdoors?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThe hardened oxide finish provides a degree of corrosion resistance for typical indoor workshop and occasional outdoor use. For prolonged outdoor or wet environments, apply a light coat of gear grease or anti-corrosion spray to the tooth surface and bore. This will extend service life and maintain smooth meshing performance.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eCan I use this gear on a CNC machine or laser cutter?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. The 1M 17T profile is commonly used on desktop CNC routers, laser engravers, and 3D printer extruder drives. Verify that your existing rack or mating gear is also 1M pitch and that the bore matches your stepper or servo motor shaft. The 19mm OD and standard involute profile make it a direct replacement for most 1M pinion gears in these machines.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eHow many gears come in one order?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eEach order includes 1 piece (x1Pcs). If you need multiple gears for a multi-axis machine or want to keep spares on hand, simply increase the quantity in your cart before checkout.\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 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 size for my motor shaft?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Measure your motor shaft diameter with a caliper. Select the bore size that matches exactly — for example, most 540-size RC motors use a 3.175mm or 5mm shaft, while larger brushless motors often use 6.35mm or 8mm shafts. The 6.35mm bore equals exactly 1\/4 inch.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What does 1 Module (1M) mean and will it mesh with my existing gears?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Module is the metric standard for gear tooth size. A 1M gear has a tooth pitch of 3.14mm. It meshes with any other 1M spur gear or rack at 20 degree pressure angle. Do not mix with 0.8M or 32DP gears.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is this gear strong enough for high-torque RC or robotics applications?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. Carbon steel construction offers significantly higher shear strength than plastic or aluminum pinions, suitable for moderate-to-high torque RC drivetrains, CNC axis drives, and robotic arm joints.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I secure the gear to the motor shaft?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Use a set screw tightened against the motor shaft. For D-cut shafts, align the set screw to the flat. For round shafts, apply thread-lock compound to the set screw for maximum holding force.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Will this gear rust or corrode outdoors?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The hardened oxide finish provides corrosion resistance for typical indoor and occasional outdoor use. Apply gear grease or anti-corrosion spray for prolonged outdoor or wet environments.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I use this gear on a CNC machine or laser cutter?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. The 1M 17T profile is commonly used on desktop CNC routers, laser engravers, and 3D printer extruder drives. Verify your existing rack or mating gear is also 1M pitch and the bore matches your motor shaft.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How many gears come in one order?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Each order includes 1 piece (x1Pcs). Increase the quantity in your cart if you need multiple gears.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"HomeDIYer","offers":[{"title":"5mm","offer_id":52442294354194,"sku":"GF0135-0","price":13.99,"currency_code":"USD","in_stock":true},{"title":"6mm","offer_id":52442294386962,"sku":"GF0135-1","price":13.99,"currency_code":"USD","in_stock":true},{"title":"6.35mm","offer_id":52442294419730,"sku":"GF0135-2","price":8.34,"currency_code":"USD","in_stock":true},{"title":"8mm","offer_id":52442294452498,"sku":"GF0135-3","price":8.34,"currency_code":"USD","in_stock":true},{"title":"4mm","offer_id":52442294485266,"sku":"GF0135-4","price":8.81,"currency_code":"USD","in_stock":true},{"title":"10mm","offer_id":52442294518034,"sku":"GF0135-5","price":8.81,"currency_code":"USD","in_stock":true},{"title":"7mm","offer_id":52442294550802,"sku":"GF0135-6","price":8.34,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Main-01_bd56d8cc-ff91-4585-8cbb-1ee3f0b83b79.jpg?v=1783412143","url":"https:\/\/homediyer.com\/products\/steel-spur-motor-pinion-gear-1m17t-19mm-od-bore-4-10mm","provider":"HomeDIYer","version":"1.0","type":"link"}