{"product_id":"10a-roller-chain-drive-sprocket-21t-30t-flat-chain-gear-sprocket-wheel","title":"1 Pcs 10A Roller Chain Drive Sprocket 21T-30T Flat Chain Gear Sprocket Wheel","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003e10A Roller Chain Drive Sprocket — Flat Gear Wheel for Reliable Power Transmission\u003c\/h2\u003e\n\u003cp\u003eWhen a worn or mismatched sprocket causes chain skipping, vibration, or premature wear on your drive system, finding an exact-fit 10A roller chain drive sprocket is the fastest fix. Whether you are a hobbyist rebuilding a go-kart, a workshop technician maintaining a conveyor line, or a maker designing a custom power-transmission rig, this flat chain gear sprocket wheel gives you the precise tooth count you need without compromise.\u003c\/p\u003e\n\u003cp\u003eEach sprocket is machined to suit standard #50 (10A) roller chain with a 15.875 mm (5\/8 in) pitch. The flat-plate body keeps the profile compact and lightweight. Tooth counts range from 21T through 30T, covering a wide spread of gear ratios in a single product listing — select the exact tooth count from the variant options above. Bore diameter and hub dimensions vary by tooth count; see variant options for confirmed measurements.\u003c\/p\u003e\n\u003cp\u003eTypical applications include go-kart and mini-bike final drives, small agricultural equipment chain drives, DIY conveyor and indexing tables, and motorized project builds requiring a #50 chain sprocket replacement. The flat-body design also suits compact gearbox output shafts where a hubbed sprocket would foul adjacent components.\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 Standard #50 \/ 10A roller chain — 15.875 mm (5\/8 in) pitch. Verify bore diameter against your shaft 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\u003eExact Tooth Count Selection\u003c\/strong\u003e — Available in 21T, 22T, 23T, 24T, 25T, 26T, 27T, 28T, 29T, and 30T so you can dial in the precise drive ratio your build requires.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\u003cstrong\u003eStandard 10A \/ #50 Chain Pitch\u003c\/strong\u003e — Machined to the 15.875 mm (5\/8 in) pitch standard, ensuring drop-in compatibility with any #50 roller chain without modification.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\u003cstrong\u003eFlat-Plate Body Design\u003c\/strong\u003e — The low-profile flat gear sprocket wheel reduces overall drivetrain width, making it ideal for space-constrained assemblies and side-by-side shaft arrangements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e\u003cstrong\u003eCorrosion-Resistant Finish\u003c\/strong\u003e — Surface treatment helps resist oxidation in workshop and light outdoor environments, extending service life between maintenance intervals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🎯\u003c\/span\u003e\u003cstrong\u003eConsistent Tooth Profile\u003c\/strong\u003e — Each tooth is formed to ANSI B29.1 sprocket geometry, promoting smooth chain engagement, reduced noise, and even load distribution across all teeth.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e\u003cstrong\u003eBroad Application Range\u003c\/strong\u003e — Suited for go-karts, mini-bikes, conveyor systems, DIY indexing tables, and any custom power-transmission project running #50 roller chain.\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\u003e#50 \/ 10A (ANSI \/ ISO)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eChain Pitch\u003c\/th\u003e\n\u003ctd\u003e15.875 mm (5\/8 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTooth Count (T)\u003c\/th\u003e\n\u003ctd\u003e21T \/ 22T \/ 23T \/ 24T \/ 25T \/ 26T \/ 27T \/ 28T \/ 29T \/ 30T\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBody Style\u003c\/th\u003e\n\u003ctd\u003eFlat plate (no hub)\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\u003eOuter Diameter\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePlate Thickness\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eSee variant options\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 Pack\u003c\/th\u003e\n\u003ctd\u003e1 pcs\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\u003eWhich chain size does this sprocket fit?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThis sprocket is designed for standard #50 \/ 10A roller chain with a 15.875 mm (5\/8 in) pitch. It will not fit #40, #60, or other chain sizes. Always confirm the chain pitch on your existing drive before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\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\u003eThe tooth count determines your drive ratio. Divide the driven sprocket teeth by the drive sprocket teeth to get the ratio. For example, pairing a 10T drive sprocket with a 30T driven sprocket gives a 3:1 reduction. Select the tooth count from the Size variant dropdown above that matches your target ratio.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat bore diameter does this sprocket have?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eBore diameter varies by tooth count. Please check the variant detail or contact us to confirm the bore size for your selected tooth count before ordering. If your shaft diameter differs, a machinist can typically bore the sprocket to a custom size.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs this sprocket strong enough for go-kart or mini-bike use?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. The flat-plate 10A sprocket is a common choice for go-kart and mini-bike final drives running #50 chain. For high-torque or racing applications, verify the material specification for your selected variant and ensure the bore-to-shaft fit is correct with a proper key or set-screw retention.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow does this sprocket resist corrosion?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe sprocket receives a surface treatment that provides resistance to light moisture and workshop environments. For prolonged outdoor or wet-area use, we recommend periodic lubrication of both the chain and sprocket teeth to extend service life.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use this sprocket on a conveyor or indexing table?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eAbsolutely. The flat-plate body and standard #50 pitch make this sprocket well-suited for light-duty conveyor drives and DIY indexing tables. Confirm the shaft bore and ensure the sprocket is secured with an appropriate key, set screw, or retaining method for your application.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between the tooth count options (21T through 30T)?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eEach tooth count produces a different outer diameter and gear ratio. Higher tooth counts (e.g., 30T) result in a larger sprocket diameter and a lower output speed for a given input speed, while lower tooth counts (e.g., 21T) produce a smaller sprocket and higher output speed. Choose based on the speed and torque requirements of your drive system.\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\/21T \/ 1 pcs","offer_id":52423281901842,"sku":"GYWYPSHXJZC1257x1","price":52.74,"currency_code":"USD","in_stock":true},{"title":"10A\/22T \/ 1 pcs","offer_id":52423281934610,"sku":"GYWYPSHXJZC1258x1","price":59.0,"currency_code":"USD","in_stock":true},{"title":"10A\/23T \/ 1 pcs","offer_id":52423281967378,"sku":"GYWYPSHXJZC1259x1","price":61.72,"currency_code":"USD","in_stock":true},{"title":"10A\/24T \/ 1 pcs","offer_id":52423282000146,"sku":"GYWYPSHXJZC1260x1","price":68.24,"currency_code":"USD","in_stock":true},{"title":"10A\/25T \/ 1 pcs","offer_id":52423282032914,"sku":"GYWYPSHXJZC1261x1","price":73.41,"currency_code":"USD","in_stock":true},{"title":"10A\/26T \/ 1 pcs","offer_id":52423282065682,"sku":"GYWYPSHXJZC1262x1","price":80.1,"currency_code":"USD","in_stock":true},{"title":"10A\/27T \/ 1 pcs","offer_id":52423282098450,"sku":"GYWYPSHXJZC1263x1","price":85.11,"currency_code":"USD","in_stock":true},{"title":"10A\/28T \/ 1 pcs","offer_id":52423282131218,"sku":"GYWYPSHXJZC1264x1","price":93.43,"currency_code":"USD","in_stock":true},{"title":"10A\/29T \/ 1 pcs","offer_id":52423282163986,"sku":"GYWYPSHXJZC1265x1","price":97.62,"currency_code":"USD","in_stock":true},{"title":"10A\/30T \/ 1 pcs","offer_id":52423282196754,"sku":"GYWYPSHXJZC1266x1","price":103.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Main-04_514adae2-b703-4a92-8a0e-09a36836b8e9.jpg?v=1782660569","url":"https:\/\/homediyer.com\/products\/10a-roller-chain-drive-sprocket-21t-30t-flat-chain-gear-sprocket-wheel","provider":"HomeDIYer","version":"1.0","type":"link"}