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When 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.
Each 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.
Typical 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.
Tooth 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.
Machined from carbon steel for the strength needed in moderate-to-heavy duty drive applications, including conveyors, agricultural equipment, and industrial machinery.
Available 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.
Surface treated to resist oxidation during storage and operation in typical indoor and light outdoor environments, extending service life between maintenance intervals.
Dimensioned 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.
Each 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.
| Chain Standard | 12A / ANSI #60 |
|---|---|
| Chain Pitch | 19.05mm (¾ in) |
| Tooth Count | See variant options (12T – 25T) |
| Material | Carbon Steel |
| Outer Diameter | See variant options |
| Bore Diameter | See variant options |
| Hub Style | See variant options |
| Finish | Oxidation-resistant surface treatment |
| Weight | See variant options |
These 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.
The 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.
Bore 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.
These 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.
The 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.
Yes — 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.
12A (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.
