{"product_id":"1-mod-19t-blue-nylon-spur-gear-bore-5-6-635-7-8mm-pinion-plastic-gear-with-step","title":"1 Mod 19T Blue Nylon Spur Gear Bore 5\/6\/6.35\/7\/8mm Pinion Plastic Gear with Step","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\n  \u003cdiv class=\"hdiy-overview\"\u003e\n    \u003ch2\u003e1 Mod 19T Blue Nylon Spur Gear — Precision Plastic Pinion for DIY Drive Systems\u003c\/h2\u003e\n    \u003cp\u003eWhen your robotics project, 3D printer extruder, or small automation build demands a lightweight, low-noise gear that meshes cleanly without lubrication, sourcing the right plastic pinion can be a frustrating bottleneck. This 1 Module 19-tooth blue nylon spur gear with step bore is engineered for makers, hobbyists, and small-scale machine builders who need a dimensionally consistent, drop-in gear solution across a range of shaft sizes.\u003c\/p\u003e\n    \u003cp\u003eEach gear is machined from engineering-grade nylon (PA66 or equivalent), offering a balance of rigidity and self-lubricating properties. The stepped bore design accommodates bore diameters of 5 mm (0.197 in), 6 mm (0.236 in), 6.35 mm (0.250 in \/ 1\/4 in), 7 mm (0.276 in), and 8 mm (0.315 in). With Module 1 and 19 teeth, the pitch diameter is 19 mm (0.748 in) and the outer diameter is approximately 21 mm (0.827 in). Gear face width is typically 10–15 mm depending on the specific variant.\u003c\/p\u003e\n    \u003cp\u003eTypical use cases include: RC car and robot drivetrain reduction stages where a quiet, lightweight 1M plastic spur gear is preferred over metal; 3D printer extruder idler and drive gear replacements requiring a 19-tooth module 1 nylon pinion; and small conveyor or automation jigs where a corrosion-resistant plastic gear with step bore eliminates the need for a keyway or set-screw hub.\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 Meshes with any Module 1 (1M) spur, rack, or helical gear. Bore options fit shafts from 5 mm to 8 mm (including 1\/4 in \/ 6.35 mm). Confirm 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 19T 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 nylon for dimensional stability, self-lubrication, and resistance to wear under continuous low-to-medium load cycling.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\u003cstrong\u003eModule 1, 19-Tooth Geometry\u003c\/strong\u003e — Standard 1M tooth profile ensures direct interchangeability with any Module 1 rack, pinion, or mating gear in your drivetrain without custom modification.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\u003cstrong\u003eStepped Bore for Multi-Shaft Compatibility\u003c\/strong\u003e — Five bore options (5 \/ 6 \/ 6.35 \/ 7 \/ 8 mm) with a stepped hub design allow secure shaft seating without requiring a lathe or custom boring operation.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔇\u003c\/span\u003e\u003cstrong\u003eLow-Noise, No-Lube Operation\u003c\/strong\u003e — Nylon-on-metal or nylon-on-nylon meshing runs significantly quieter than steel gears and requires no grease or oil in typical light-duty applications.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e\u003cstrong\u003eCorrosion-Resistant Material\u003c\/strong\u003e — Nylon is unaffected by moisture, mild chemicals, and oxidation, making these gears suitable for humid environments or outdoor enclosures where metal gears would corrode.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e\u003cstrong\u003eFlexible Pack Quantities\u003c\/strong\u003e — Available in 1, 2, 5, or 10-piece packs so you can order a single replacement or stock spares for production runs without overpaying for bulk minimums.\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-table-wrap\"\u003e\n    \u003ch2\u003e📐 Technical Specifications — Module 1 Nylon Spur Gear\u003c\/h2\u003e\n    \u003ctable\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003cth\u003eModule\u003c\/th\u003e\n\u003ctd\u003e1 (1M)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eNumber of Teeth\u003c\/th\u003e\n\u003ctd\u003e19T\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003ePitch Diameter\u003c\/th\u003e\n\u003ctd\u003e19 mm (0.748 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eOuter Diameter (approx.)\u003c\/th\u003e\n\u003ctd\u003e21 mm (0.827 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eBore Diameter Options\u003c\/th\u003e\n\u003ctd\u003e5 mm \/ 6 mm \/ 6.35 mm \/ 7 mm \/ 8 mm\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 Style\u003c\/th\u003e\n\u003ctd\u003eStepped bore (no keyway)\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\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 \/ 2 \/ 5 \/ 10 PCS (select above)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eWeight (per piece, approx.)\u003c\/th\u003e\n\u003ctd\u003eSee variant options\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\u003eMatch the bore to your shaft's outer diameter. Common motor shaft sizes: 5 mm (many small DC and stepper motors), 6 mm (standard hobby and NEMA 17 variants), 6.35 mm \/ 1\/4 in (US-standard shafts and some servo motors), 7 mm (mid-range DC motors), 8 mm (larger stepper and servo motors). If your shaft is between sizes, choose the next size up and use a shaft collar or set-screw hub to secure the gear.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eCan this nylon gear handle continuous load without stripping?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eEngineering nylon (PA66-class) is rated for moderate continuous loads in light-duty applications such as 3D printers, small robots, and automation jigs. For high-torque or shock-load applications, consider a metal gear of the same module. Nylon gears are best suited for speeds under ~500 RPM and torques within the gear's rated face-width capacity. Avoid sustained operation above 60 °C as nylon softens under prolonged heat.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eIs this gear corrosion-resistant for outdoor or humid environments?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. Nylon is inherently resistant to moisture, mild acids, and oxidation. It will not rust or corrode in humid or wet environments. However, nylon can absorb a small amount of moisture over time, which may cause minor dimensional changes. For precision applications in very wet conditions, allow for this tolerance or seal the gear housing.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWill this gear mesh with my existing Module 1 metal rack or pinion?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. Module 1 is a standardized tooth profile. This 19T nylon spur gear will mesh correctly with any Module 1 rack, spur gear, or compatible helical gear regardless of material (steel, aluminum, or nylon), as long as the pressure angle is 20°. Verify the pressure angle of your mating gear before assembly.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eDo I need to lubricate this nylon gear?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eIn most light-duty applications, no lubrication is required — nylon is self-lubricating. For higher-speed or higher-load pairings with metal gears, a light application of dry PTFE spray or white lithium grease can extend service life. Avoid petroleum-based oils that may degrade nylon over time.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eHow do I secure the gear to the shaft without a keyway?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThe stepped bore design provides a snug fit on the shaft. For additional security, use a radial set screw (M2–M3 depending on bore size) tapped into the hub, or apply a small amount of thread-locking compound between the bore and shaft. For applications with reversing loads, a set screw is strongly recommended to prevent slipping.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat quantity pack should I order for a prototype vs. production run?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eFor prototyping or a single repair, the 1 PCS or 2 PCS pack is the most cost-effective entry point. For small production runs or to keep spares on hand, the 5 PCS or 10 PCS packs offer a lower per-unit cost. Check the price-per-piece across pack sizes shown in the variant selector above to find the best value for your volume.\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\": \"Which bore size should I choose for my motor shaft?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Match the bore to your shaft's outer diameter. Common motor shaft sizes: 5 mm (many small DC and stepper motors), 6 mm (standard hobby and NEMA 17 variants), 6.35 mm \/ 1\/4 in (US-standard shafts and some servo motors), 7 mm (mid-range DC motors), 8 mm (larger stepper and servo motors). If your shaft is between sizes, choose the next size up and use a shaft collar or set-screw hub to secure the gear.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can this nylon gear handle continuous load without stripping?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Engineering nylon (PA66-class) is rated for moderate continuous loads in light-duty applications such as 3D printers, small robots, and automation jigs. For high-torque or shock-load applications, consider a metal gear of the same module. Nylon gears are best suited for speeds under ~500 RPM and torques within the gear's rated face-width capacity.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is this gear corrosion-resistant for outdoor or humid environments?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. Nylon is inherently resistant to moisture, mild acids, and oxidation. It will not rust or corrode in humid or wet environments. For precision applications in very wet conditions, allow for minor dimensional changes due to moisture absorption.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Will this gear mesh with my existing Module 1 metal rack or pinion?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. Module 1 is a standardized tooth profile. This 19T nylon spur gear will mesh correctly with any Module 1 rack, spur gear, or compatible helical gear regardless of material, as long as the pressure angle is 20°.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Do I need to lubricate this nylon gear?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"In most light-duty applications, no lubrication is required — nylon is self-lubricating. For higher-speed or higher-load pairings with metal gears, a light application of dry PTFE spray or white lithium grease can extend service life.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I secure the gear to the shaft without a keyway?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The stepped bore design provides a snug fit on the shaft. For additional security, use a radial set screw (M2–M3 depending on bore size) tapped into the hub, or apply a small amount of thread-locking compound between the bore and shaft.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What quantity pack should I order for a prototype vs. production run?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"For prototyping or a single repair, the 1 PCS or 2 PCS pack is the most cost-effective entry point. For small production runs or to keep spares on hand, the 5 PCS or 10 PCS packs offer a lower per-unit cost.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"HomeDIYer","offers":[{"title":"1M 19T \/ 5mm \/ 1 PCS","offer_id":52442823655698,"sku":"AdaahDZ32618x1","price":9.76,"currency_code":"USD","in_stock":true},{"title":"1M 19T \/ 5mm \/ 2 PCS","offer_id":52442823688466,"sku":"AdaahDZ32618x2","price":15.52,"currency_code":"USD","in_stock":true},{"title":"1M 19T \/ 5mm \/ 5 PCS","offer_id":52442823721234,"sku":"AdaahDZ32618x5","price":32.08,"currency_code":"USD","in_stock":true},{"title":"1M 19T \/ 5mm \/ 10 PCS","offer_id":52442823754002,"sku":"AdaahDZ32618x10","price":63.17,"currency_code":"USD","in_stock":true},{"title":"1M 19T \/ 6mm \/ 1 PCS","offer_id":52442823786770,"sku":"AdaahGLCDPJ00487x1","price":10.34,"currency_code":"USD","in_stock":true},{"title":"1M 19T \/ 6mm \/ 2 PCS","offer_id":52442823819538,"sku":"AdaahGLCDPJ00487x2","price":15.67,"currency_code":"USD","in_stock":true},{"title":"1M 19T \/ 6mm \/ 5 PCS","offer_id":52442823852306,"sku":"AdaahGLCDPJ00487x5","price":34.53,"currency_code":"USD","in_stock":true},{"title":"1M 19T \/ 6mm \/ 10 PCS","offer_id":52442823885074,"sku":"AdaahGLCDPJ00487x10","price":67.99,"currency_code":"USD","in_stock":true},{"title":"1M 19T \/ 6.35mm \/ 1 PCS","offer_id":52442823917842,"sku":"AdaahGLCDPJ00488x1","price":10.34,"currency_code":"USD","in_stock":true},{"title":"1M 19T \/ 6.35mm \/ 2 PCS","offer_id":52442823950610,"sku":"AdaahGLCDPJ00488x2","price":15.67,"currency_code":"USD","in_stock":true},{"title":"1M 19T \/ 6.35mm \/ 5 PCS","offer_id":52442823983378,"sku":"AdaahGLCDPJ00488x5","price":34.53,"currency_code":"USD","in_stock":true},{"title":"1M 19T \/ 6.35mm \/ 10 PCS","offer_id":52442824016146,"sku":"AdaahGLCDPJ00488x10","price":67.99,"currency_code":"USD","in_stock":true},{"title":"1M 19T \/ 7mm \/ 1 PCS","offer_id":52442824048914,"sku":"AdaahGLCDPJ00489x1","price":10.34,"currency_code":"USD","in_stock":true},{"title":"1M 19T \/ 7mm \/ 2 PCS","offer_id":52442824081682,"sku":"AdaahGLCDPJ00489x2","price":15.67,"currency_code":"USD","in_stock":true},{"title":"1M 19T \/ 7mm \/ 5 PCS","offer_id":52442824114450,"sku":"AdaahGLCDPJ00489x5","price":34.53,"currency_code":"USD","in_stock":true},{"title":"1M 19T \/ 7mm \/ 10 PCS","offer_id":52442824147218,"sku":"AdaahGLCDPJ00489x10","price":67.99,"currency_code":"USD","in_stock":true},{"title":"1M 19T \/ 8mm \/ 1 PCS","offer_id":52442824179986,"sku":"AdaahGLCDPJ00490x1","price":10.34,"currency_code":"USD","in_stock":true},{"title":"1M 19T \/ 8mm \/ 2 PCS","offer_id":52442824212754,"sku":"AdaahGLCDPJ00490x2","price":15.67,"currency_code":"USD","in_stock":true},{"title":"1M 19T \/ 8mm \/ 5 PCS","offer_id":52442824245522,"sku":"AdaahGLCDPJ00490x5","price":34.53,"currency_code":"USD","in_stock":true},{"title":"1M 19T \/ 8mm \/ 10 PCS","offer_id":52442824278290,"sku":"AdaahGLCDPJ00490x10","price":67.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture7of8_23e8879a-a019-4d84-8ea8-95487191e942.jpg?v=1783608971","url":"https:\/\/homediyer.com\/products\/1-mod-19t-blue-nylon-spur-gear-bore-5-6-635-7-8mm-pinion-plastic-gear-with-step","provider":"HomeDIYer","version":"1.0","type":"link"}