{"product_id":"10a-roller-chain-drive-sprocket-31t-40t-flat-gear-sprocket-wheel","title":"1 Pcs 10A Roller Chain Drive Sprocket 31T-40T Flat Chain Gear Sprocket Wheel","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003e10A Roller Chain Drive Sprocket — Precision Flat Gear Wheel for Reliable Power Transmission\u003c\/h2\u003e\n\u003cp\u003eWhen a slipping or mismatched sprocket brings your build to a halt, you need a replacement you can trust to mesh cleanly and hold up under load. Whether you're a maker retrofitting a go-kart, a hobbyist assembling a conveyor, or a technician maintaining light industrial equipment, the right 10A roller chain drive sprocket is the difference between a smooth drivetrain and constant downtime.\u003c\/p\u003e\n\u003cp\u003eThis flat chain gear sprocket wheel is machined to suit ANSI\/ISO 10A (5\/8\" pitch) roller chain. Available in tooth counts from 31T to 40T, each sprocket is manufactured from carbon steel with a natural or lightly finished surface, offering a balance of toughness and machinability. Outer diameters range approximately 65–85 mm (2.56\"–3.35\") depending on tooth count, with a bore diameter that can be confirmed per variant.\u003c\/p\u003e\n\u003cp\u003eTypical applications include go-kart rear axle drives, small conveyor belt systems, DIY electric bike or scooter chain drives, and light-duty agricultural or workshop machinery — anywhere a 10A standard roller chain is already in use and a specific gear ratio is needed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e🔗\u003c\/span\u003e \u003cstrong\u003eCompatible with:\u003c\/strong\u003e ANSI\/ISO 10A (5\/8\" pitch, 3\/8\" roller diameter) roller chain — confirm bore diameter and hub dimensions before ordering.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These 10A Roller Chain Drive Sprockets\u003c\/h2\u003e\n\u003cul class=\"hdiy-list\"\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚙️\u003c\/span\u003e \u003cstrong\u003eANSI\/ISO 10A Standard Pitch\u003c\/strong\u003e — 5\/8\" (15.875 mm) pitch matches standard 10A roller chain for drop-in compatibility without custom machining.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🦷\u003c\/span\u003e \u003cstrong\u003eWide Tooth Count Range (31T–40T)\u003c\/strong\u003e — Ten size options let you dial in your exact gear ratio for speed or torque, covering a broad range of drivetrain configurations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e \u003cstrong\u003eFlat Plate Construction\u003c\/strong\u003e — Low-profile flat sprocket design reduces weight and simplifies mounting on axles, shafts, or hubs where a flanged sprocket would add unnecessary bulk.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e \u003cstrong\u003eCarbon Steel Construction\u003c\/strong\u003e — Machined from carbon steel for solid wear resistance and the structural integrity needed in continuous-duty chain drive applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e \u003cstrong\u003eConsistent Tooth Profile\u003c\/strong\u003e — Tooth geometry is cut to maintain even chain engagement across the full sprocket circumference, reducing chain wear and extending drivetrain service life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔧\u003c\/span\u003e \u003cstrong\u003eSingle-Piece Sold Individually\u003c\/strong\u003e — Each listing is for one (1) sprocket, making it straightforward to replace a single worn component or source a matched pair for a new build.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — 10A Roller Chain Sprocket\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eChain Standard\u003c\/th\u003e\n\u003ctd\u003eANSI\/ISO 10A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eChain Pitch\u003c\/th\u003e\n\u003ctd\u003e15.875 mm (5\/8\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRoller Diameter\u003c\/th\u003e\n\u003ctd\u003e10.16 mm (0.400\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTooth Count (T)\u003c\/th\u003e\n\u003ctd\u003e31T \/ 32T \/ 33T \/ 34T \/ 35T \/ 36T \/ 37T \/ 38T \/ 39T \/ 40T\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOuter Diameter\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Diameter\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\u003eFlat (no hub)\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\u003eSurface Finish\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 pcs\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\n\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\n\u003csummary\u003eHow do I choose the right tooth count for my application?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eTooth count determines your gear ratio. Divide the driven sprocket teeth by the drive sprocket teeth to get the ratio. A higher tooth count on the driven side gives more torque and lower speed; a lower count gives higher speed. For go-karts, a common rear sprocket range is 31T–40T paired with a smaller engine sprocket. Match your desired ratio to your engine RPM and target wheel speed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat roller chain is compatible with this sprocket?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThis sprocket is designed for ANSI\/ISO 10A standard roller chain, which has a 5\/8\" (15.875 mm) pitch and a 10.16 mm (0.400\") roller diameter. Do not use with 08B, 12A, or other pitch chains — mismatched pitch will cause rapid wear and chain skipping.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs the bore diameter adjustable or fixed?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe bore diameter varies by variant — please check the specific size listing for the bore spec. If you need a custom bore, a machinist can typically bore out a carbon steel sprocket to your shaft diameter, provided the wall thickness allows it. Contact us to confirm the stock bore before ordering if you have a specific shaft size requirement.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow corrosion-resistant is this sprocket?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eCarbon steel sprockets offer solid mechanical strength but have moderate corrosion resistance. For outdoor or high-moisture environments, regular lubrication with chain oil is recommended to prevent surface rust. If your application requires higher corrosion resistance, consider stainless steel alternatives or apply a protective coating after installation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use this sprocket on both the drive and driven side?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes — this flat sprocket can be used on either the drive (input) or driven (output) side of a chain drive system, as long as the bore fits your shaft and the tooth count gives you the gear ratio you need. Ensure both sprockets are aligned in the same plane to prevent chain side-loading and premature wear.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between a flat sprocket and a hubbed sprocket?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eA flat sprocket (like this one) has a uniform plate thickness with no raised hub, making it lighter and more compact. It is typically secured to a shaft using a keyway, set screw, or custom hub adapter. A hubbed sprocket has an extended cylindrical boss that provides more shaft engagement and is easier to secure with a set screw alone. Choose flat when space is tight or weight matters; choose hubbed when you need a more secure shaft grip without additional hardware.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDoes this listing include the chain or any mounting hardware?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eNo — this listing is for the sprocket only (1 piece). Chain, keys, set screws, and hub adapters are not included. If you need matching 10A roller chain or connecting links, please search our store for compatible chain products.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your Size (tooth count) above, then add to cart.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"HomeDIYer","offers":[{"title":"10A - 31T \/ 1 pcs","offer_id":52423401898258,"sku":"GYWYPSHXJZC1699x1","price":57.6,"currency_code":"USD","in_stock":true},{"title":"10A - 32T \/ 1 pcs","offer_id":52423401931026,"sku":"GYWYPSHXJZC1700x1","price":62.14,"currency_code":"USD","in_stock":true},{"title":"10A - 33T \/ 1 pcs","offer_id":52423401963794,"sku":"GYWYPSHXJZC1701x1","price":70.79,"currency_code":"USD","in_stock":true},{"title":"10A - 34T \/ 1 pcs","offer_id":52423401996562,"sku":"GYWYPSHXJZC1702x1","price":67.85,"currency_code":"USD","in_stock":true},{"title":"10A - 35T \/ 1 pcs","offer_id":52423402029330,"sku":"GYWYPSHXJZC1703x1","price":73.64,"currency_code":"USD","in_stock":true},{"title":"10A - 36T \/ 1 pcs","offer_id":52423402062098,"sku":"GYWYPSHXJZC1704x1","price":74.51,"currency_code":"USD","in_stock":true},{"title":"10A - 37T \/ 1 pcs","offer_id":52423402094866,"sku":"GYWYPSHXJZC1705x1","price":83.9,"currency_code":"USD","in_stock":true},{"title":"10A - 38T \/ 1 pcs","offer_id":52423402127634,"sku":"GYWYPSHXJZC1706x1","price":98.59,"currency_code":"USD","in_stock":true},{"title":"10A - 39T \/ 1 pcs","offer_id":52423402160402,"sku":"GYWYPSHXJZC1707x1","price":89.2,"currency_code":"USD","in_stock":true},{"title":"10A - 40T \/ 1 pcs","offer_id":52423402193170,"sku":"GYWYPSHXJZC1708x1","price":98.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture3of5_4f39083e-4d55-40d6-9f37-612bd4ef9906.jpg?v=1782827296","url":"https:\/\/homediyer.com\/products\/10a-roller-chain-drive-sprocket-31t-40t-flat-gear-sprocket-wheel","provider":"HomeDIYer","version":"1.0","type":"link"}