{"product_id":"12a-chain-sprocket-steel-19-05mm-pitch-roller-chain","title":"12A Chain Sprocket Steel Sprockets 12T - 25Teeth 19.05mm Pitch For Roller Chain","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003e12A Roller Chain Sprockets — Reliable Steel Drive Components for Roller Chain Systems\u003c\/h2\u003e\n\u003cp\u003eWhen a worn or undersized sprocket causes chain skipping, premature wear, or drivetrain noise, finding an exact-fit replacement is critical. These 12A steel chain sprockets are designed for engineers, machine builders, and DIY mechanics who need dependable power transmission components that match standard roller chain specifications without guesswork.\u003c\/p\u003e\n\u003cp\u003eEach sprocket is machined from carbon steel and finished to suit standard 12A (ANSI #60) roller chain with a 19.05mm (¾ inch) pitch. Tooth counts range from 12T to 25T, with bore diameters and hub dimensions varying by variant. Overall sprocket outer diameters typically range from approximately 75mm to 160mm (2.95 in to 6.30 in) depending on tooth count selected.\u003c\/p\u003e\n\u003cp\u003eTypical applications include conveyor drive systems requiring 12A sprocket replacements, agricultural machinery drivetrain repairs using #60 roller chain sprockets, and industrial automation equipment where a 19.05mm pitch steel sprocket ensures consistent torque transfer and long service life.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e🔗\u003c\/span\u003e Compatible with standard \u003cstrong\u003e12A \/ ANSI #60 roller chain\u003c\/strong\u003e — 19.05mm (¾ in) pitch. Verify bore diameter and hub dimensions against your shaft before ordering.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These 12A Steel Roller Chain Sprockets\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-list\"\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚙️\u003c\/span\u003e\u003cstrong\u003eStandard 12A \/ #60 Chain Compatibility\u003c\/strong\u003e\n\u003cp\u003eTooth profile is precision-cut to ANSI\/ISO standards for 19.05mm pitch roller chain, ensuring smooth engagement and minimal chain wear across the full tooth range.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\u003cstrong\u003eCarbon Steel Construction\u003c\/strong\u003e\n\u003cp\u003eMachined from carbon steel for the strength needed in moderate-to-heavy duty drive applications, including conveyors, agricultural equipment, and industrial machinery.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\u003cstrong\u003eMultiple Tooth Count Options\u003c\/strong\u003e\n\u003cp\u003eAvailable from 12T to 25T to achieve your required gear ratio. Select the tooth count that matches your drive and driven shaft requirements for optimal speed reduction or increase.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e\u003cstrong\u003eCorrosion-Resistant Finish\u003c\/strong\u003e\n\u003cp\u003eSurface treated to resist oxidation during storage and operation in typical indoor and light outdoor environments, extending service life between maintenance intervals.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🎯\u003c\/span\u003e\u003cstrong\u003eDirect Replacement Fit\u003c\/strong\u003e\n\u003cp\u003eDimensioned to replace OEM and aftermarket 12A sprockets on standard shaft sizes. Confirm bore diameter from the variant options to ensure a drop-in fit on your application.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e\u003cstrong\u003eBalanced for Smooth Operation\u003c\/strong\u003e\n\u003cp\u003eEach sprocket is machined to close tolerances to minimize vibration and noise at operating speeds, reducing stress on bearings and chain links over extended run times.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — 12A Roller Chain Sprocket\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eChain Standard\u003c\/th\u003e\n\u003ctd\u003e12A \/ ANSI #60\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eChain Pitch\u003c\/th\u003e\n\u003ctd\u003e19.05mm (¾ in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTooth Count\u003c\/th\u003e\n\u003ctd\u003eSee variant options (12T – 25T)\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\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\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eOxidation-resistant surface treatment\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\u003eWhich roller chain does this sprocket fit?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThese sprockets are designed for standard 12A roller chain, also known as ANSI #60 chain. The chain pitch is 19.05mm (¾ inch). Do not use with 08B, 10A, or other pitch chains, as the tooth profile will not engage correctly.\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 reduction ratio. For example, a 12T drive sprocket paired with a 24T driven sprocket gives a 2:1 speed reduction. Select the tooth count from the variant options that matches your required ratio.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat bore diameter options are available?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eBore diameter varies by tooth count variant. Please check the variant options above for the specific bore size. If you need a custom bore, the sprocket can typically be machined to size by a local machine shop — contact us to confirm the hub wall thickness before machining.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow strong are these sprockets for heavy-duty use?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThese sprockets are machined from carbon steel, which provides good tensile strength for moderate-to-heavy duty conveyor, agricultural, and industrial drive applications. For continuous high-load or high-speed applications, verify the rated working load of your 12A chain against your system's torque requirements before installation.\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\u003eThe sprockets have a surface treatment that resists light oxidation in typical indoor and sheltered outdoor environments. For prolonged exposure to moisture, chemicals, or salt air, we recommend applying a chain lubricant or anti-rust coating as part of your regular maintenance routine. For fully corrosion-resistant applications, consider stainless steel sprocket options.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use these sprockets to replace OEM parts on agricultural or conveyor equipment?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes — provided the OEM sprocket uses 12A \/ ANSI #60 chain with 19.05mm pitch and the bore diameter matches your shaft. These are manufactured to standard ANSI dimensions, making them compatible with most equipment that originally specified #60 chain sprockets. Always verify tooth count and bore before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between 12A and 08B sprockets?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003e12A (ANSI #60) and 08B (BS\/ISO) are different chain standards with different pitches and tooth profiles. 12A has a 19.05mm pitch, while 08B also has a 12.7mm pitch. They are not interchangeable. Confirm your chain standard before selecting a sprocket to avoid mismatched engagement.\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":"（12A）12T","offer_id":52423244710162,"sku":"FAS073351x1","price":99.31,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Main-03_0cfd7cbb-ff48-4392-b2b6-4c2e20f70f2f.jpg?v=1782654077","url":"https:\/\/homediyer.com\/products\/12a-chain-sprocket-steel-19-05mm-pitch-roller-chain","provider":"HomeDIYer","version":"1.0","type":"link"}