{"product_id":"12a-sprocket-10t-60t-step-hub-60-roller-chain-19-05mm-pitch","title":"12A 10T-60T Chain Sprockets Pitch 3\/4\"(19.05mm) With Step For #60 Roller Chains","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003e12A Step-Hub Sprockets for #60 Roller Chains — Precision Fit, 10T to 60T\u003c\/h2\u003e\n\u003cp\u003eWhen a worn or mismatched sprocket causes chain skip, accelerated wear, or unexpected downtime, the fix starts with the right tooth count and a bore that actually seats flush. These 12A step-hub chain sprockets are engineered for builders, fabricators, and machine maintainers who need a direct-fit replacement or upgrade for ANSI #60 \/ ISO 12A roller chain drives — without the guesswork of custom machining.\u003c\/p\u003e\n\u003cp\u003eEach sprocket is machined from medium-carbon steel with a hardened tooth profile, sized to the ANSI #60 \/ ISO 12A standard pitch of 19.05 mm (3\/4 in). The stepped hub design provides a positive shoulder for shaft positioning and set-screw retention. Tooth counts span 10T through 60T, covering a wide range of drive ratios in a single product family. Bore diameter varies by tooth count — see variant options for exact bore dimensions.\u003c\/p\u003e\n\u003cp\u003eTypical applications include conveyor drive systems requiring precise chain-to-sprocket engagement, go-kart and small-vehicle final drives using #60 roller chain, and industrial automation equipment where a stepped-hub sprocket simplifies shaft alignment and axial locking. Long-tail use cases: replacement 12A sprocket for conveyor line, ANSI 60 sprocket with step hub for shaft collar, ISO 12A drive sprocket 19.05mm pitch fabrication.\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 #60 Roller Chain \u0026amp; ISO 12A Roller Chain — Pitch 19.05 mm (3\/4 in) — Single-strand standard roller chain only\u003c\/div\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These 12A Step-Hub 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 #60 \/ ISO 12A Standard Pitch\u003c\/strong\u003e\u003cbr\u003eMachined to the 19.05 mm (3\/4 in) pitch specification, ensuring full engagement with standard #60 and 12A single-strand roller chain without shimming or adjustment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e \u003cstrong\u003eStepped Hub for Positive Shaft Seating\u003c\/strong\u003e\u003cbr\u003eThe integrated step shoulder provides a precise axial reference surface, simplifying shaft positioning and reducing the risk of lateral sprocket walk under load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e \u003cstrong\u003eHardened Tooth Profile\u003c\/strong\u003e\u003cbr\u003eTooth flanks are hardened to resist wear from chain articulation, extending service life in continuous-duty conveyor and drive applications compared to unhardened blanks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e \u003cstrong\u003eWide Tooth-Count Range: 10T to 60T\u003c\/strong\u003e\u003cbr\u003eFifty tooth-count options in a single product family let you dial in the exact drive ratio you need — from high-speed small-sprocket configurations to large-diameter slow-speed driven sprockets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e \u003cstrong\u003eSet-Screw Ready Bore\u003c\/strong\u003e\u003cbr\u003eEach hub includes a tapped set-screw port for positive shaft locking. Bore diameter is sized per tooth count — select your variant to confirm the bore dimension before ordering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🏭\u003c\/span\u003e \u003cstrong\u003eDirect Replacement Geometry\u003c\/strong\u003e\u003cbr\u003eOutside diameter, hub length, and tooth profile follow ANSI B29.1 \/ ISO 606 standards, making these sprockets drop-in replacements for OEM #60 sprockets in most conveyor, drive, and machinery applications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — 12A 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 #60 \/ ISO 12A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePitch\u003c\/th\u003e\n\u003ctd\u003e19.05 mm (3\/4 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTooth Count Range\u003c\/th\u003e\n\u003ctd\u003e10T – 60T (select variant)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStrand\u003c\/th\u003e\n\u003ctd\u003eSingle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHub Style\u003c\/th\u003e\n\u003ctd\u003eStepped hub with set-screw bore\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eMedium-carbon steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTooth Treatment\u003c\/th\u003e\n\u003ctd\u003eHardened tooth flanks\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 Length\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutside Diameter\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 Order\u003c\/th\u003e\n\u003ctd\u003e1 pc\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 drive?\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 30T driven sprocket gives a 3:1 reduction. If you are replacing an existing sprocket, count the teeth on the worn part or check your equipment's parts manual for the OEM tooth count specification.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWill these sprockets fit standard ANSI #60 roller chain?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. These sprockets are machined to the ANSI #60 \/ ISO 12A pitch of 19.05 mm (3\/4 in), which is the defining dimension for chain-to-sprocket engagement. Any standard single-strand #60 or 12A roller chain will mesh correctly with these sprockets.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the bore diameter for each tooth count?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eBore diameter varies by tooth count because the hub diameter scales with the sprocket's pitch circle. Please select your specific tooth count variant on this page to view the corresponding bore dimension, or contact us to confirm before ordering if your shaft diameter is a critical constraint.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat does the stepped hub design do, and why does it matter?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe stepped hub creates a machined shoulder that acts as a positive axial stop when the sprocket is slid onto a shaft. This makes alignment faster and more repeatable than a plain-bore sprocket, and it prevents the sprocket from walking laterally under chain tension. The step also provides a reference surface for a shaft collar or bearing face.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these sprockets corrosion-resistant for outdoor or wet environments?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe base material is medium-carbon steel, which provides good mechanical strength but has limited inherent corrosion resistance. For outdoor, washdown, or humid environments, we recommend applying a chain lubricant rated for your conditions and inspecting the sprocket periodically. If your application requires stainless steel or a corrosion-resistant coating, contact us to confirm availability.\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 or small vehicle final drive?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. ANSI #60 roller chain is commonly used in go-kart and small-vehicle final drives, and these 12A sprockets are a direct match for that chain. Select the tooth count that gives you the desired top speed and torque ratio for your engine and axle combination. Smaller tooth counts on the driver side increase speed; larger tooth counts increase torque.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I lock the sprocket to the shaft securely?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eEach hub includes a tapped set-screw port. Use a hardened-tip set screw tightened against a flat or keyway on the shaft for the most secure connection. For high-torque applications, a keyed bore with a matching keyway on the shaft is the most reliable method — contact us to confirm if a keyed bore option is available for your tooth count.\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 (Types) above, then add to cart.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"HomeDIYer","offers":[{"title":"12A-10T \/ 1pcs","offer_id":52423293960466,"sku":"FXL1239-0","price":54.79,"currency_code":"USD","in_stock":true},{"title":"12A-11T \/ 1pcs","offer_id":52423293993234,"sku":"FXL1239-1","price":60.91,"currency_code":"USD","in_stock":true},{"title":"12A-12T \/ 1pcs","offer_id":52423294026002,"sku":"FXL1239-2","price":67.03,"currency_code":"USD","in_stock":true},{"title":"12A-13T \/ 1pcs","offer_id":52423294058770,"sku":"FXL1239-3","price":77.45,"currency_code":"USD","in_stock":true},{"title":"12A-14T \/ 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