{"product_id":"08b-roller-chain-sprocket-41-60t-12-7mm-pitch","title":"08B 41-60T Roller Chains Sprocket With Step Pitch 1\/2\" 12.7mm For Drive Chain","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003e08B Roller Chain Sprocket — 41 to 60 Tooth, 12.7mm Pitch for Reliable Drive Chain Systems\u003c\/h2\u003e\n\u003cp\u003eWhen a worn or mismatched sprocket causes chain skip, premature wear, or unexpected downtime, engineers and DIY builders alike need a direct-fit replacement they can count on. These 08B roller chain sprockets are designed for makers, machine builders, and maintenance professionals who demand dimensional accuracy and consistent tooth engagement across every cycle.\u003c\/p\u003e\n\u003cp\u003eEach sprocket in this listing is machined to the ISO 08B standard with a pitch of 12.7mm (1\/2\"). Available in 41 through 60 tooth counts, the bore and hub dimensions follow standard step-hub geometry. Material is typically carbon steel with a natural or lightly treated finish; exact surface treatment may vary by variant — see variant options for confirmation.\u003c\/p\u003e\n\u003cp\u003eTypical applications include conveyor drive systems requiring precise chain indexing, agricultural and light industrial machinery using #08B roller chain, and custom fabrication projects such as go-kart drivetrains, rotary actuators, and chain-driven automation rigs where tooth count selection directly controls gear ratio and output speed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e🔗\u003c\/span\u003e \u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for ISO 08B-1 roller chain with 12.7mm (1\/2\") pitch. Verify bore diameter and keyway requirements against your shaft specification before ordering.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These 08B 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\u003eISO 08B Standard Pitch — 12.7mm (1\/2\")\u003c\/strong\u003e\u003cbr\u003eMachined to ISO\/DIN 08B-1 chain pitch specification, ensuring direct interchangeability with standard #08B roller chain without modification or shimming.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚙️\u003c\/span\u003e \u003cstrong\u003eWide Tooth Count Range — 41T to 60T\u003c\/strong\u003e\u003cbr\u003eTwenty tooth-count options in a single listing let you dial in your exact drive ratio. Larger tooth counts reduce chain speed and increase torque; smaller counts do the opposite.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e \u003cstrong\u003eStep-Hub Design for Shaft Versatility\u003c\/strong\u003e\u003cbr\u003eThe stepped hub profile accommodates a range of shaft diameters and allows for set-screw or keyway retention depending on your bore machining preference.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e \u003cstrong\u003eCarbon Steel Construction for Durability\u003c\/strong\u003e\u003cbr\u003eManufactured from carbon steel stock, these sprockets resist deformation under cyclic load and maintain tooth profile integrity across extended service intervals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e \u003cstrong\u003eConsistent Tooth Profile for Smooth Engagement\u003c\/strong\u003e\u003cbr\u003eTooth geometry is cut to match the roller diameter of standard 08B chain, minimizing impact loading at engagement and reducing chain elongation over time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e \u003cstrong\u003eSold Individually — One Sprocket Per Unit\u003c\/strong\u003e\u003cbr\u003eEach order ships as a single sprocket. Order the exact quantity you need for your drive system without paying for surplus stock.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — 08B Roller Chain Sprocket\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eChain Standard\u003c\/th\u003e\n\u003ctd\u003eISO 08B-1 \/ DIN 8187\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eChain Pitch\u003c\/th\u003e\n\u003ctd\u003e12.7mm (1\/2\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTooth Count (T)\u003c\/th\u003e\n\u003ctd\u003e41T, 42T, 43T, 44T, 45T, 46T, 47T, 48T, 49T, 50T, 51T, 52T, 53T, 54T, 55T, 56T, 57T, 58T, 59T, 60T\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRoller Diameter Compatibility\u003c\/th\u003e\n\u003ctd\u003e8.51mm (0.335\") — ISO 08B standard roller\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHub Style\u003c\/th\u003e\n\u003ctd\u003eStep 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\u003ePitch Circle Diameter (PCD)\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutside Diameter (OD)\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHub Length\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\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\u003ePacking Quantity\u003c\/th\u003e\n\u003ctd\u003e1 piece per unit\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 drive ratio. Divide the driven sprocket tooth count by the drive sprocket tooth count to get the reduction ratio. For example, a 20T drive sprocket paired with a 60T driven sprocket gives a 3:1 reduction — the output shaft turns at one-third the input speed with three times the torque. Select your tooth count based on the speed and torque requirements of your specific machine.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat roller chain is compatible with these sprockets?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThese sprockets are designed for ISO 08B-1 roller chain with a 12.7mm (1\/2\") pitch and an 8.51mm roller diameter. This is the same chain commonly designated as #08B in metric markets. Do not use with ANSI #40 chain — while the pitch is identical at 1\/2\", the roller diameter differs (7.95mm for ANSI #40 vs. 8.51mm for ISO 08B), which will cause poor engagement and accelerated wear.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these sprockets strong enough for industrial or continuous-duty use?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThese carbon steel sprockets are suitable for light-to-medium industrial duty cycles, including conveyor systems, agricultural equipment, and automated machinery operating within the rated load capacity of 08B-1 chain. For heavy shock-load environments or continuous high-speed operation, verify the working load against the chain manufacturer's rated breaking strength and apply an appropriate service factor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWill these sprockets rust or corrode in outdoor or wet environments?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eCarbon steel sprockets are susceptible to surface oxidation when exposed to moisture without protection. For outdoor or washdown environments, apply a chain lubricant or anti-corrosion coating regularly. If your application requires inherent corrosion resistance, consider stainless steel sprockets instead — contact us to confirm availability for your tooth count.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat bore diameter do these sprockets have, and can I have them bored to size?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eBore diameter varies by tooth count and is listed in the variant options. If the standard bore does not match your shaft diameter, the step-hub design allows a machinist to bore and key the sprocket to your required shaft size. We recommend confirming the maximum bore diameter for your selected tooth count before ordering if custom machining is planned.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I know if my existing chain is worn and needs a new sprocket too?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eA worn chain will cause accelerated sprocket tooth wear even on a new sprocket. Check chain elongation using a chain wear gauge or by measuring a 12-link span — if elongation exceeds 1.5–2% of nominal length, replace the chain alongside the sprocket. Visible hooked or shark-fin tooth profiles on the sprocket are a clear sign the sprocket should be replaced at the same time as the chain.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use these sprockets for a go-kart, bicycle, or custom fabrication project?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. 08B sprockets are widely used in go-kart drivetrains, motorized bicycle builds, rotary actuators, and custom chain-drive fabrication projects. Confirm that your chain is ISO 08B-1 (not ANSI #40 or #41) and that the bore diameter suits your axle or shaft. The 41–60 tooth range gives you significant flexibility in tuning your final drive ratio.\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 (Size) above, then add to cart.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"HomeDIYer","offers":[{"title":"08B - 41T \/ 1 pcs","offer_id":52423410385170,"sku":"GYWYPSHXJZC2928x1","price":100.3,"currency_code":"USD","in_stock":true},{"title":"08B - 42T \/ 1 pcs","offer_id":52423410417938,"sku":"GYWYPSHXJZC2929x1","price":107.24,"currency_code":"USD","in_stock":true},{"title":"08B - 43T \/ 1 pcs","offer_id":52423410450706,"sku":"GYWYPSHXJZC2930x1","price":110.55,"currency_code":"USD","in_stock":true},{"title":"08B - 44T \/ 1 pcs","offer_id":52423410483474,"sku":"GYWYPSHXJZC2931x1","price":115.31,"currency_code":"USD","in_stock":true},{"title":"08B - 45T \/ 1 pcs","offer_id":52423410516242,"sku":"GYWYPSHXJZC2932x1","price":115.31,"currency_code":"USD","in_stock":true},{"title":"08B - 46T \/ 1 pcs","offer_id":52423410549010,"sku":"GYWYPSHXJZC2933x1","price":120.07,"currency_code":"USD","in_stock":true},{"title":"08B - 47T \/ 1 pcs","offer_id":52423410581778,"sku":"GYWYPSHXJZC2934x1","price":123.2,"currency_code":"USD","in_stock":true},{"title":"08B - 48T \/ 1 pcs","offer_id":52423410614546,"sku":"GYWYPSHXJZC2935x1","price":128.45,"currency_code":"USD","in_stock":true},{"title":"08B - 49T \/ 1 pcs","offer_id":52423410647314,"sku":"GYWYPSHXJZC2936x1","price":136.39,"currency_code":"USD","in_stock":true},{"title":"08B - 50T \/ 1 pcs","offer_id":52423410680082,"sku":"GYWYPSHXJZC2937x1","price":144.15,"currency_code":"USD","in_stock":true},{"title":"08B - 51T \/ 1 pcs","offer_id":52423410712850,"sku":"GYWYPSHXJZC2918x1","price":146.81,"currency_code":"USD","in_stock":true},{"title":"08B - 52T \/ 1 pcs","offer_id":52423410745618,"sku":"GYWYPSHXJZC2919x1","price":150.62,"currency_code":"USD","in_stock":true},{"title":"08B - 53T \/ 1 pcs","offer_id":52423410778386,"sku":"GYWYPSHXJZC2920x1","price":156.25,"currency_code":"USD","in_stock":true},{"title":"08B - 54T \/ 1 pcs","offer_id":52423410811154,"sku":"GYWYPSHXJZC2921x1","price":159.87,"currency_code":"USD","in_stock":true},{"title":"08B - 55T \/ 1 pcs","offer_id":52423410843922,"sku":"GYWYPSHXJZC2922x1","price":166.31,"currency_code":"USD","in_stock":true},{"title":"08B - 56T \/ 1 pcs","offer_id":52423410876690,"sku":"GYWYPSHXJZC2923x1","price":170.07,"currency_code":"USD","in_stock":true},{"title":"08B - 57T \/ 1 pcs","offer_id":52423410909458,"sku":"GYWYPSHXJZC2924x1","price":174.34,"currency_code":"USD","in_stock":true},{"title":"08B - 58T \/ 1 pcs","offer_id":52423410942226,"sku":"GYWYPSHXJZC2925x1","price":179.64,"currency_code":"USD","in_stock":true},{"title":"08B - 59T \/ 1 pcs","offer_id":52423410974994,"sku":"GYWYPSHXJZC2926x1","price":177.68,"currency_code":"USD","in_stock":true},{"title":"08B - 60T \/ 1 pcs","offer_id":52423411007762,"sku":"GYWYPSHXJZC2927x1","price":186.31,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture2of5_16fe5bc4-f254-4a1c-9f47-5e5412590cbb.jpg?v=1782833060","url":"https:\/\/homediyer.com\/products\/08b-roller-chain-sprocket-41-60t-12-7mm-pitch","provider":"HomeDIYer","version":"1.0","type":"link"}