{"product_id":"5-8-roller-chain-sprockets-10a-pitch-10t-29t-45-steel","title":"5\/8\" Roller Chain Sprockets 10A Pitch 17.875mm 10T - 29T Chain Link 45# Steel","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003e5\/8\" Roller Chain Sprockets 10A Pitch — Precision-Machined 45# Steel for Reliable Power Transmission\u003c\/h2\u003e\n\u003cp\u003eWhen a worn or undersized sprocket causes chain skip, premature wear, or unexpected downtime on your conveyor, go-kart, mini bike, or industrial drive system, finding an exact-match replacement becomes urgent. These 5\/8\" pitch (ANSI #50 \/ 10A) roller chain sprockets are engineered for makers, repair technicians, and mechanical hobbyists who need a dimensionally accurate, drop-in solution without custom machining.\u003c\/p\u003e\n\u003cp\u003eEach sprocket is machined from 45# medium-carbon steel, offering a solid balance of hardness and toughness. The rough bore diameter ranges from 12 mm (0.47\") to 16 mm (0.63\"), ready for finish boring or keywaying to your shaft size. Tooth counts span 10T through 29T, covering a wide range of speed-ratio requirements. A matching 1.5 m roller chain, chain links, and half links are also available as companion variants.\u003c\/p\u003e\n\u003cp\u003eTypical use cases include go-kart and mini bike final-drive replacement, small conveyor and feeder drive upgrades, agricultural equipment repair requiring #50 chain sprockets, and DIY power-transmission builds where a 5\/8\" pitch roller chain sprocket with a rough bore is the starting point for a custom shaft fit.\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 #50 \/ ISO 10A roller chain — 5\/8\" (15.875 mm) pitch. Verify your chain pitch and tooth count before ordering.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These 5\/8\" Roller Chain Sprockets\u003c\/h2\u003e\n\u003cul class=\"hdiy-list\"\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚙️\u003c\/span\u003e \u003cstrong\u003eANSI #50 \/ 10A Standard Pitch\u003c\/strong\u003e — 5\/8\" (15.875 mm) pitch matches standard #50 roller chain for direct, no-modification fitment on compatible drives.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e \u003cstrong\u003e45# Medium-Carbon Steel Construction\u003c\/strong\u003e — Machined from 45# steel for a reliable combination of surface hardness and core toughness, resisting tooth wear under sustained load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e \u003cstrong\u003eWide Tooth-Count Selection (10T – 29T)\u003c\/strong\u003e — Choose from 20 sprocket sizes to dial in your exact speed ratio, whether you need a fast-spinning driver or a torque-multiplying driven sprocket.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🕳️\u003c\/span\u003e \u003cstrong\u003eRough Bore Ready for Custom Shaft Fit\u003c\/strong\u003e — Bore diameters of 12 mm, 14 mm, and 16 mm provide material for finish boring, reaming, or keywaying to your exact shaft specification.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔗\u003c\/span\u003e \u003cstrong\u003eComplete Drive Kit Options\u003c\/strong\u003e — Companion variants include a 1.5 m roller chain, standard chain links (3 pcs), and half links (2 pcs) so you can source the full drive assembly in one order.\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, small conveyors, agricultural feeders, and general-purpose #50 chain drive systems requiring a reliable replacement or upgrade sprocket.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — Roller Chain Sprockets\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eChain Standard\u003c\/th\u003e\n\u003ctd\u003eANSI #50 \/ ISO 10A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eChain Pitch\u003c\/th\u003e\n\u003ctd\u003e5\/8\" (15.875 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePitch Designation\u003c\/th\u003e\n\u003ctd\u003e10A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTooth Count Options\u003c\/th\u003e\n\u003ctd\u003e10T, 11T, 12T, 13T, 14T, 15T, 16T, 17T, 18T, 19T, 20T, 21T, 22T, 23T, 24T, 25T, 26T, 27T, 28T, 29T\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePitch Diameter (10T)\u003c\/th\u003e\n\u003ctd\u003e17.875 mm (0.703\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRough Bore Diameter\u003c\/th\u003e\n\u003ctd\u003e12 mm \/ 14 mm \/ 16 mm (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003e45# Medium-Carbon 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\u003eCompanion Chain Length\u003c\/th\u003e\n\u003ctd\u003e1.5 m (roller chain variant)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eChain Link Pack\u003c\/th\u003e\n\u003ctd\u003e3 pcs (chain link variant) \/ 2 pcs (half link variant)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eChain Link Width\u003c\/th\u003e\n\u003ctd\u003e5\/8\" (matches #50 chain)\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\u003eThe tooth count determines your drive ratio. Divide the driven sprocket teeth by the driver sprocket teeth to get the reduction ratio. For example, a 10T driver paired with a 20T driven sprocket gives a 2:1 reduction — the output shaft turns at half the speed with twice the torque. Match your required speed ratio and chain wrap angle to select the correct tooth count from the 10T–29T range available.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat chain is compatible with these sprockets?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThese sprockets are designed for ANSI #50 \/ ISO 10A roller chain with a 5\/8\" (15.875 mm) pitch. Do not use with #40 (1\/2\" pitch) or #60 (3\/4\" pitch) chain — the tooth profile and pitch diameter will not match, causing rapid wear or chain derailment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat does \"rough bore\" mean, and can I use the sprocket as-is?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003e\"Rough bore\" means the center hole is pre-drilled to a nominal diameter (12 mm, 14 mm, or 16 mm) but is not finish-machined to a precise tolerance or fitted with a keyway. You can use it as-is on a shaft that is slightly smaller than the bore with a set-screw hub, or take it to a machine shop for finish boring, reaming, and keyway cutting to achieve a precision fit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow strong are 45# steel sprockets under load?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003e45# medium-carbon steel (equivalent to SAE 1045) offers a tensile strength of approximately 600–700 MPa in the as-machined condition. It provides good tooth wear resistance for moderate-duty drives such as go-karts, mini bikes, and light conveyor systems. For heavy-duty industrial applications with shock loads, consider heat-treated or alloy-steel sprockets.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these sprockets corrosion-resistant for outdoor use?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003e45# carbon steel has limited inherent corrosion resistance. For outdoor or wet environments, apply a chain lubricant regularly and consider a protective coating (paint, cold galvanizing, or clear lacquer) on the sprocket body. The roller chain itself should also be lubricated and inspected periodically to prevent rust-induced elongation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I order just the chain or chain links without a sprocket?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. Select \"Roller Chain\" from the Number of Teeth dropdown to order a 1.5 m length of matching #50 roller chain. Choose \"Chain Link\" for a pack of 3 standard connecting links, or \"Half Link\" for a pack of 2 half links — useful for fine-tuning chain length when a full link would leave the chain too long.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I measure my existing sprocket to confirm compatibility?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eCount the number of teeth on your existing sprocket and measure the chain pitch (the distance between the centers of two adjacent chain pins). For #50 chain this should measure 5\/8\" (15.875 mm). Also measure the shaft diameter to select the appropriate rough bore size (12 mm, 14 mm, or 16 mm) that gives you enough material to finish-bore to your shaft OD.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your tooth count, bore diameter, and quantity above, then add to cart.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"HomeDIYer","offers":[{"title":"10T \/ 12mm \/ 1 pcs","offer_id":52423222886674,"sku":"GLFBNHHHXCDZH2264x1","price":15.22,"currency_code":"USD","in_stock":true},{"title":"11T \/ 12mm \/ 1 pcs","offer_id":52423222919442,"sku":"GLFBNHHHXCDZH2265x1","price":17.88,"currency_code":"USD","in_stock":true},{"title":"12T \/ 12mm \/ 1 pcs","offer_id":52423222952210,"sku":"GLFBNHHHXCDZH2266x1","price":21.15,"currency_code":"USD","in_stock":true},{"title":"13T \/ 12mm \/ 1 pcs","offer_id":52423222984978,"sku":"GLFBNHHHXCDZH2267x1","price":23.87,"currency_code":"USD","in_stock":true},{"title":"14T \/ 12mm \/ 1 pcs","offer_id":52423223017746,"sku":"GLFBNHHHXCDZH2268x1","price":29.09,"currency_code":"USD","in_stock":true},{"title":"15T \/ 12mm \/ 1 pcs","offer_id":52423223050514,"sku":"GLFBNHHHXCDZH2269x1","price":34.39,"currency_code":"USD","in_stock":true},{"title":"16T \/ 12mm \/ 1 pcs","offer_id":52423223083282,"sku":"GLFBNHHHXCDZH2270x1","price":41.19,"currency_code":"USD","in_stock":true},{"title":"17T \/ 12mm \/ 1 pcs","offer_id":52423223116050,"sku":"GLFBNHHHXCDZH2271x1","price":43.91,"currency_code":"USD","in_stock":true},{"title":"18T \/ 14mm \/ 1 pcs","offer_id":52423223148818,"sku":"GLFBNHHHXCDZH2272x1","price":48.48,"currency_code":"USD","in_stock":true},{"title":"19T \/ 14mm \/ 1 pcs","offer_id":52423223181586,"sku":"GLFBNHHHXCDZH2273x1","price":51.75,"currency_code":"USD","in_stock":true},{"title":"20T \/ 14mm \/ 1 pcs","offer_id":52423223214354,"sku":"GLFBNHHHXCDZH2274x1","price":58.68,"currency_code":"USD","in_stock":true},{"title":"21T \/ 16mm \/ 1 pcs","offer_id":52423223247122,"sku":"GLFBNHHHXCDZH2275x1","price":61.54,"currency_code":"USD","in_stock":true},{"title":"22T \/ 16mm \/ 1 pcs","offer_id":52423223279890,"sku":"GLFBNHHHXCDZH2276x1","price":67.99,"currency_code":"USD","in_stock":true},{"title":"23T \/ 16mm \/ 1 pcs","offer_id":52423223312658,"sku":"GLFBNHHHXCDZH2277x1","price":74.24,"currency_code":"USD","in_stock":true},{"title":"24T \/ 16mm \/ 1 pcs","offer_id":52423223345426,"sku":"GLFBNHHHXCDZH2278x1","price":79.82,"currency_code":"USD","in_stock":true},{"title":"25T \/ 16mm \/ 1 pcs","offer_id":52423223378194,"sku":"GLFBNHHHXCDZH2279x1","price":83.49,"currency_code":"USD","in_stock":true},{"title":"26T \/ 16mm \/ 1 pcs","offer_id":52423223410962,"sku":"GLFBNHHHXCDZH2280x1","price":89.96,"currency_code":"USD","in_stock":true},{"title":"27T \/ 16mm \/ 1 pcs","offer_id":52423223443730,"sku":"GLFBNHHHXCDZH2281x1","price":96.49,"currency_code":"USD","in_stock":true},{"title":"28T \/ 16mm \/ 1 pcs","offer_id":52423223476498,"sku":"GLFBNHHHXCDZH2282x1","price":105.93,"currency_code":"USD","in_stock":true},{"title":"29T \/ 16mm \/ 1 pcs","offer_id":52423223509266,"sku":"GLFBNHHHXCDZH2283x1","price":113.55,"currency_code":"USD","in_stock":true},{"title":"Roller Chain \/ 1.5m long \/ 1 pcs","offer_id":52423223542034,"sku":"GLFBNHHHXCDZH2299x1","price":101.85,"currency_code":"USD","in_stock":true},{"title":"Chain Link \/ 5\/8\" \/ 3 pcs","offer_id":52423223574802,"sku":"GLFBNHHHXCDZH0562x1","price":5.1,"currency_code":"USD","in_stock":true},{"title":"Half Link \/ 5\/8\" \/ 2 pcs","offer_id":52423223607570,"sku":"GLFBNHHHXCDZH0563x1","price":4.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture6of13_d6ef12e1-4318-4501-b4e2-8ec65ff84f81.jpg?v=1782650877","url":"https:\/\/homediyer.com\/products\/5-8-roller-chain-sprockets-10a-pitch-10t-29t-45-steel","provider":"HomeDIYer","version":"1.0","type":"link"}