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When a worn or mismatched sprocket causes chain skip, premature wear, or unexpected downtime, the fix starts with the right tooth profile and pitch. Whether you're a maker building a go-kart, a technician maintaining a conveyor line, or a hobbyist upgrading a power transmission project, these 12A flat chain drive sprockets deliver the dimensional accuracy your drivetrain demands.
Each sprocket is machined from A3 carbon steel and engineered to the ISO 606 / ANSI #60 standard with a pitch of 19.05mm (0.75 in). The tooth count range spans 10 to 40 teeth, with bore diameters that vary by model — typically 10–60mm (0.39–2.36 in) depending on the selected tooth count. The flat-plate (Type A) hub design keeps the profile compact and lightweight for space-constrained assemblies.
Typical use cases include small-to-medium industrial conveyor drives requiring a reliable 12A sprocket replacement, go-kart and mini-bike rear axle drive setups using #60 roller chain, and DIY automation rigs or agricultural equipment where a precise 19.05mm pitch chain drive sprocket is essential for consistent power transfer.
Machined from A3 carbon steel for reliable tensile strength and wear resistance across demanding mechanical drive applications.
Tooth geometry and pitch conform to ISO 606 and ANSI #60 standards, ensuring accurate chain engagement and minimal vibration.
Choose from 31 tooth-count variants (10T through 40T) to dial in your exact gear ratio for speed or torque optimization.
The hubless flat-plate profile reduces overall assembly weight and axial length, ideal for compact drivetrain layouts.
Precision-cut tooth profiles maintain consistent chain wrap angle across the full tooth range, reducing chain fatigue and elongation.
Suitable for conveyors, go-karts, mini-bikes, agricultural machinery, and DIY automation projects requiring a dependable #60 chain sprocket.
| Chain Standard | ISO 606 / ANSI #60 (12A) |
|---|---|
| Chain Pitch | 19.05mm (3/4 in) |
| Tooth Count Range | 10T – 40T (31 variants) |
| Material | A3 Carbon Steel |
| Hub Type | Flat Plate (Type A, hubless) |
| Bore Diameter | See variant options |
| Outer Diameter | See variant options |
| Plate Thickness | See variant options |
| Surface Finish | Natural / Lightly oiled |
| Quantity per Order | 1 Pcs |
| Compatible Chain | #60 / 12A Roller Chain |
Your gear ratio is determined by dividing the driven sprocket's tooth count by the drive sprocket's tooth count. For higher speed, use a smaller driven sprocket relative to the driver. For more torque, use a larger driven sprocket. Select from 10T to 40T to achieve your target ratio. If you're replacing an existing sprocket, match the tooth count exactly.
Yes. These sprockets are specifically designed for #60 / 12A roller chain with a 19.05mm (3/4 in) pitch. They conform to ISO 606 and ANSI #60 standards. Do not use with #50, #80, or other pitch chains — pitch mismatch will cause rapid wear and chain failure.
Bore diameter varies by tooth count. Please refer to the variant options or contact us to confirm the bore size for your selected tooth count before ordering. If your shaft diameter requires a custom bore, a machine shop can typically re-bore the sprocket to your specification.
A3 carbon steel (equivalent to ASTM A36 / S235) offers a tensile strength of approximately 370–500 MPa, making it well-suited for moderate-load chain drive applications such as conveyors, go-karts, and light industrial machinery. For heavy-duty or high-speed applications with significant shock loads, consider whether a hardened or alloy steel sprocket may be more appropriate.
A3 carbon steel is not inherently corrosion-resistant. For outdoor or wet environments, we recommend applying a chain lubricant or anti-rust coating regularly. If long-term corrosion resistance is required, consider pairing with a stainless steel chain or applying a zinc/epoxy coating after installation.
Yes. The 12A / #60 chain standard is commonly used in go-kart and mini-bike rear axle drive systems. Select the tooth count that matches your desired top speed and torque balance. Ensure your axle shaft diameter matches the sprocket's bore, and verify the sprocket's outer diameter clears your frame and chain guard.
A flat-plate (Type A) sprocket has no extended hub — the bore runs through a flat disc. This design is lighter and more compact axially, making it ideal for applications where space is limited. A hubbed sprocket has an extended cylindrical boss that provides more bearing surface and is better suited for cantilevered shaft loads. These sprockets are Type A (flat plate).
