{"product_id":"1-mod-28-teeth-blue-nylon-spur-gear-bore-5mm-12mm-pinion-plastic-gear-with-step","title":"1 Mod 28 Teeth Blue Nylon Spur Gear Bore 5mm-12mm Pinion Plastic Gear with Step","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\n  \u003cdiv class=\"hdiy-overview\"\u003e\n    \u003ch2\u003e1 Mod 28-Tooth Blue Nylon Spur Gear — Lightweight Pinion Gear with Stepped Bore for Precision Drives\u003c\/h2\u003e\n    \u003cp\u003eWhen a metal gear is overkill and a generic plastic gear won't hold tolerance, makers, robotics builders, and automation engineers reach for a nylon spur gear that balances strength, weight, and quiet operation. This 1 Mod 28-tooth blue nylon spur gear with a stepped bore is designed for hobbyists and professionals who need a reliable, low-backlash pinion gear without the noise or corrosion concerns of steel.\u003c\/p\u003e\n    \u003cp\u003eEach gear is machined from engineering-grade blue nylon (PA66 or equivalent), offering a good balance of rigidity and self-lubrication. The module is 1 (Mod 1), tooth count is 28T, and the stepped bore accommodates shaft diameters from 5mm to 12mm (approximately 0.197\" to 0.472\"), making it compatible with a wide range of motor shafts and drive axles. Outside diameter is typically around 30mm (~1.18\"), and face width is approximately 10–15mm (0.39\"–0.59\").\u003c\/p\u003e\n    \u003cp\u003eTypical use cases include: 3D printer extruder and axis drives where low noise is critical; small robotic arm joints and servo-driven mechanisms requiring a lightweight 1 mod plastic gear; DIY CNC and automation projects where a corrosion-resistant nylon pinion gear with step bore replaces metal components to reduce system weight.\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 all standard Mod 1 (1M) spur gears, racks, and pinions. Bore options: 5mm, 6mm, 6.35mm, 7mm, 8mm, 10mm, 12mm.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-features\"\u003e\n    \u003ch2\u003e✅ Key Features of These 1 Mod 28-Tooth 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 consistent tooth geometry, dimensional stability, and self-lubricating properties that reduce wear over time.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\u003cstrong\u003eStepped Bore Design\u003c\/strong\u003e — The integrated step bore allows secure shaft seating across multiple shaft diameters (5mm–12mm \/ 0.197\"–0.472\") without additional adapters or bushings.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚙️\u003c\/span\u003e\u003cstrong\u003eStandard Mod 1 Tooth Profile\u003c\/strong\u003e — 28 teeth at Module 1 ensures direct interchangeability with any Mod 1 rack, pinion, or mating gear in your drivetrain.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔇\u003c\/span\u003e\u003cstrong\u003eLow-Noise, Low-Vibration Operation\u003c\/strong\u003e — Nylon-on-metal or nylon-on-nylon meshing significantly reduces operational noise compared to all-metal gear trains — ideal for indoor robotics and desktop automation.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e\u003cstrong\u003eCorrosion-Resistant Material\u003c\/strong\u003e — Nylon is inherently resistant to moisture, mild chemicals, and oxidation, making these gears suitable for environments where steel gears would corrode or require frequent maintenance.\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 exactly what your project requires, from single prototypes to small production runs.\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-table-wrap\"\u003e\n    \u003ch2\u003e📐 Technical Specifications — Nylon Spur Gear\u003c\/h2\u003e\n    \u003ctable\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003cth\u003eModule (Mod)\u003c\/th\u003e\n\u003ctd\u003e1 (Mod 1 \/ 1M)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eNumber of Teeth\u003c\/th\u003e\n\u003ctd\u003e28T\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\u003eBore Diameter\u003c\/th\u003e\n\u003ctd\u003eSee variant options (5mm \/ 6mm \/ 6.35mm \/ 7mm \/ 8mm \/ 10mm \/ 12mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eOutside Diameter (OD)\u003c\/th\u003e\n\u003ctd\u003eApprox. 30mm (~1.18\")\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eFace Width\u003c\/th\u003e\n\u003ctd\u003eTypically 10–15mm (0.39\"–0.59\")\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\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 Gear (Pinion)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003ePack Quantity\u003c\/th\u003e\n\u003ctd\u003eSee variant options (1 \/ 2 \/ 5 \/ 10 PCS)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eWeight (per piece)\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\u003eSelect the bore diameter that matches your motor or drive shaft. Common shaft sizes: 5mm and 6mm for small DC and stepper motors; 6.35mm (1\/4\") for imperial shafts; 7mm and 8mm for mid-range servo and gearmotor shafts; 10mm and 12mm for larger drive axles. If your shaft is between sizes, choose the next size up and use a set screw or keyway adapter to secure the 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\u003eNylon gears have lower tensile strength than steel or aluminum, but they are well-suited for light-to-medium load applications such as 3D printers, small robots, and desktop automation. The advantage is significantly reduced noise, self-lubrication, and resistance to corrosion. For high-torque or heavy-load applications, consider a metal gear instead.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eAre these gears corrosion-resistant?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. Engineering nylon (PA66-class) is inherently resistant to moisture, mild acids, oils, and oxidation. These gears will not rust and require no lubrication in most light-duty applications, though a small amount of dry lubricant can extend service life in continuous-duty setups.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWill this gear mesh with my existing Mod 1 rack or pinion?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. This gear follows the standard Module 1 (Mod 1 \/ 1M) tooth profile with a 20° pressure angle, which is the most common metric gear standard. It will mesh correctly with any Mod 1 rack, spur gear, or pinion regardless of material (nylon, steel, aluminum, or acetal). Verify that your mating gear is also Mod 1 before ordering.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eCan I use this gear without lubrication?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eIn most light-duty and intermittent-use applications, nylon gears are self-lubricating and can run dry. For continuous-duty or higher-speed applications, applying a small amount of PTFE-based or silicone dry lubricant to the tooth faces will reduce wear and extend gear life. Avoid petroleum-based greases, which can degrade some nylon grades over time.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eHow do I decide between buying 1, 2, 5, or 10 pieces?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eChoose 1 PCS for prototyping or single-axis builds. Choose 2 PCS if your design uses a gear pair or you want a spare on hand. Choose 5 or 10 PCS for multi-axis machines (such as CoreXY 3D printers or multi-joint robot arms), small production runs, or to take advantage of the per-unit cost savings at higher quantities.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat is the outside diameter and face width of this gear?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eFor a Mod 1, 28-tooth spur gear, the theoretical outside diameter (OD) is (28 + 2) × 1mm = 30mm (~1.18\"). Face width is typically 10–15mm (0.39\"–0.59\") for this gear class. If you need exact dimensions for CAD modeling, 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 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\": \"Select the bore diameter that matches your motor or drive shaft. Common shaft sizes: 5mm and 6mm for small DC and stepper motors; 6.35mm (1\/4 inch) for imperial shafts; 7mm and 8mm for mid-range servo and gearmotor shafts; 10mm and 12mm for larger drive axles. If your shaft is between sizes, choose the next size up and use a set screw or keyway adapter to secure the gear.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How strong is a nylon spur gear compared to a metal one?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Nylon gears have lower tensile strength than steel or aluminum, but they are well-suited for light-to-medium load applications such as 3D printers, small robots, and desktop automation. The advantage is significantly reduced noise, self-lubrication, and resistance to corrosion.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Are these gears corrosion-resistant?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. Engineering nylon (PA66-class) is inherently resistant to moisture, mild acids, oils, and oxidation. These gears will not rust and require no lubrication in most light-duty applications.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Will this gear mesh with my existing Mod 1 rack or pinion?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. This gear follows the standard Module 1 (Mod 1 \/ 1M) tooth profile with a 20 degree pressure angle. It will mesh correctly with any Mod 1 rack, spur gear, or pinion regardless of material.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I use this gear without lubrication?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"In most light-duty and intermittent-use applications, nylon gears are self-lubricating and can run dry. For continuous-duty or higher-speed applications, applying a small amount of PTFE-based or silicone dry lubricant to the tooth faces will reduce wear and extend gear life.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I decide between buying 1, 2, 5, or 10 pieces?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Choose 1 PCS for prototyping or single-axis builds. Choose 2 PCS if your design uses a gear pair or you want a spare on hand. Choose 5 or 10 PCS for multi-axis machines, small production runs, or to take advantage of per-unit cost savings at higher quantities.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the outside diameter and face width of this gear?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"For a Mod 1, 28-tooth spur gear, the theoretical outside diameter (OD) is 30mm (~1.18 inches). Face width is typically 10-15mm (0.39-0.59 inches). Contact us to confirm exact dimensions for CAD modeling.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"HomeDIYer","offers":[{"title":"1M 28T \/ 5mm \/ 1 PCS","offer_id":52442819789074,"sku":"AdaahGLCDPJ00621x1","price":12.0,"currency_code":"USD","in_stock":true},{"title":"1M 28T \/ 5mm \/ 2 PCS","offer_id":52442819821842,"sku":"AdaahGLCDPJ00621x2","price":19.64,"currency_code":"USD","in_stock":true},{"title":"1M 28T \/ 5mm \/ 5 PCS","offer_id":52442819854610,"sku":"AdaahGLCDPJ00621x5","price":43.72,"currency_code":"USD","in_stock":true},{"title":"1M 28T \/ 5mm \/ 10 PCS","offer_id":52442819887378,"sku":"AdaahGLCDPJ00621x10","price":86.35,"currency_code":"USD","in_stock":true},{"title":"1M 28T \/ 6mm \/ 1 PCS","offer_id":52442819920146,"sku":"AdaahGLCDPJ00622x1","price":12.0,"currency_code":"USD","in_stock":true},{"title":"1M 28T \/ 6mm \/ 2 PCS","offer_id":52442819952914,"sku":"AdaahGLCDPJ00622x2","price":19.64,"currency_code":"USD","in_stock":true},{"title":"1M 28T \/ 6mm \/ 5 PCS","offer_id":52442819985682,"sku":"AdaahGLCDPJ00622x5","price":43.72,"currency_code":"USD","in_stock":true},{"title":"1M 28T \/ 6mm \/ 10 PCS","offer_id":52442820018450,"sku":"AdaahGLCDPJ00622x10","price":86.35,"currency_code":"USD","in_stock":true},{"title":"1M 28T \/ 6.35mm \/ 1 PCS","offer_id":52442820051218,"sku":"AdaahGLCDPJ00623x1","price":12.0,"currency_code":"USD","in_stock":true},{"title":"1M 28T \/ 6.35mm \/ 2 PCS","offer_id":52442820083986,"sku":"AdaahGLCDPJ00623x2","price":19.64,"currency_code":"USD","in_stock":true},{"title":"1M 28T \/ 6.35mm \/ 5 PCS","offer_id":52442820116754,"sku":"AdaahGLCDPJ00623x5","price":43.72,"currency_code":"USD","in_stock":true},{"title":"1M 28T \/ 6.35mm \/ 10 PCS","offer_id":52442820149522,"sku":"AdaahGLCDPJ00623x10","price":86.35,"currency_code":"USD","in_stock":true},{"title":"1M 28T \/ 7mm \/ 1 PCS","offer_id":52442820182290,"sku":"AdaahGLCDPJ00624x1","price":12.0,"currency_code":"USD","in_stock":true},{"title":"1M 28T \/ 7mm \/ 2 PCS","offer_id":52442820215058,"sku":"AdaahGLCDPJ00624x2","price":19.64,"currency_code":"USD","in_stock":true},{"title":"1M 28T \/ 7mm \/ 5 PCS","offer_id":52442820247826,"sku":"AdaahGLCDPJ00624x5","price":43.72,"currency_code":"USD","in_stock":true},{"title":"1M 28T \/ 7mm \/ 10 PCS","offer_id":52442820280594,"sku":"AdaahGLCDPJ00624x10","price":86.35,"currency_code":"USD","in_stock":true},{"title":"1M 28T \/ 8mm \/ 1 PCS","offer_id":52442820313362,"sku":"AdaahGLCDPJ00625x1","price":12.0,"currency_code":"USD","in_stock":true},{"title":"1M 28T \/ 8mm \/ 2 PCS","offer_id":52442820346130,"sku":"AdaahGLCDPJ00625x2","price":19.64,"currency_code":"USD","in_stock":true},{"title":"1M 28T \/ 8mm \/ 5 PCS","offer_id":52442820378898,"sku":"AdaahGLCDPJ00625x5","price":43.72,"currency_code":"USD","in_stock":true},{"title":"1M 28T \/ 8mm \/ 10 PCS","offer_id":52442820411666,"sku":"AdaahGLCDPJ00625x10","price":86.35,"currency_code":"USD","in_stock":true},{"title":"1M 28T \/ 10mm \/ 1 PCS","offer_id":52442820444434,"sku":"AdaahGLCDPJ00626x1","price":12.0,"currency_code":"USD","in_stock":true},{"title":"1M 28T \/ 10mm \/ 2 PCS","offer_id":52442820477202,"sku":"AdaahGLCDPJ00626x2","price":19.64,"currency_code":"USD","in_stock":true},{"title":"1M 28T \/ 10mm \/ 5 PCS","offer_id":52442820509970,"sku":"AdaahGLCDPJ00626x5","price":43.72,"currency_code":"USD","in_stock":true},{"title":"1M 28T \/ 10mm \/ 10 PCS","offer_id":52442820542738,"sku":"AdaahGLCDPJ00626x10","price":86.35,"currency_code":"USD","in_stock":true},{"title":"1M 28T \/ 12mm \/ 1 PCS","offer_id":52442820575506,"sku":"AdaahGLCDPJ00627x1","price":12.0,"currency_code":"USD","in_stock":true},{"title":"1M 28T \/ 12mm \/ 2 PCS","offer_id":52442820608274,"sku":"AdaahGLCDPJ00627x2","price":19.64,"currency_code":"USD","in_stock":true},{"title":"1M 28T \/ 12mm \/ 5 PCS","offer_id":52442820641042,"sku":"AdaahGLCDPJ00627x5","price":43.72,"currency_code":"USD","in_stock":true},{"title":"1M 28T \/ 12mm \/ 10 PCS","offer_id":52442820673810,"sku":"AdaahGLCDPJ00627x10","price":86.35,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture4of8_61090703-0936-4b2d-bf87-0a045eee7649.jpg?v=1783608768","url":"https:\/\/homediyer.com\/products\/1-mod-28-teeth-blue-nylon-spur-gear-bore-5mm-12mm-pinion-plastic-gear-with-step","provider":"HomeDIYer","version":"1.0","type":"link"}