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When a worn or mismatched sprocket causes chain skip, accelerated wear, or unexpected downtime, the fix starts with getting the tooth count and pitch exactly right. Engineers, fabricators, and serious DIYers working with #80 roller chain drives need a sprocket that holds tight tolerances across the full load range — not one that introduces slop from day one.
These 16A chain drive flat sprockets are machined to suit a 1" pitch (25.4 mm) roller chain, conforming to the ISO 606 / ANSI #80 standard. Available in 41 tooth-count options from 10T through 50T, each sprocket features a flat-plate body profile with a precision-bored center hub. Outer diameter scales with tooth count, ranging from approximately 100 mm (3.94") on the 10T up to approximately 410 mm (16.14") on the 50T. Bore diameter is sized per variant — see variant options for exact bore dimensions.
Typical use cases include industrial conveyor line drives requiring consistent chain engagement, agricultural and material-handling equipment upgrades where replacement sprocket availability matters, and custom power-transmission builds — such as go-kart rear axle drives, winch systems, and chain-reduction gearboxes — where selecting the correct 16A flat sprocket tooth count determines final drive ratio and output torque.
| Chain Standard | ISO 606 / ANSI #80 |
|---|---|
| Chain Pitch | 1" (25.4 mm) |
| Tooth Count Range | 10T – 50T (41 options) |
| Sprocket Type | Flat Plate (Single Strand) |
| Material | Carbon Steel |
| Outer Diameter | See variant options |
| Bore Diameter | See variant options |
| Hub Style | See variant options |
| Keyway | See variant options |
| Surface Finish | See variant options |
| Sold As | 1 Piece per order |
| Compatible Chain | #80 Roller Chain (16A) |
The 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. Select the tooth count that achieves your target output speed or torque based on your input shaft RPM.
Yes. These sprockets are machined to the ISO 606 / ANSI #80 standard with a 1" (25.4 mm) pitch, which is the defining dimension for #80 roller chain. As long as your chain is a genuine #80 / 16A single-strand roller chain, it will seat correctly on these sprockets.
Bore diameter varies by tooth count and is listed in the variant options. Please check the specific variant detail before ordering to confirm the bore matches your shaft diameter. If you need a custom bore size, contact us to confirm availability.
These are carbon steel sprockets and will oxidize if left unprotected in wet or humid conditions. For outdoor or wash-down environments, we recommend applying a chain lubricant or anti-corrosion coating, and pairing with a stainless or corrosion-resistant #80 roller chain where appropriate.
Keyway and set-screw configurations depend on the specific variant. Please refer to the variant options or contact us to confirm the hub configuration for your selected tooth count before ordering.
Load capacity depends on the tooth count, bore size, and the tensile strength of the paired #80 roller chain. As a general reference, ANSI #80 chain has a minimum tensile strength of approximately 17,800 lbf (79.2 kN). For specific torque ratings matched to your application, contact us with your RPM, load, and duty cycle details.
These are single-strand flat sprockets designed for one run of #80 roller chain. For double-strand or multi-strand applications, you would need a duplex or triplex sprocket with the corresponding multi-strand chain. Contact us if you need guidance on multi-strand configurations.
