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Chain sprocket

Roller-chain sprocket with a hub. Default pitch is 6.35 mm (#25 chain); use 12.7 mm for bicycle chain.

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Dimensions

16
6.35 mm
4 mm
20 mm
8 mm
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No account, no credit. Want it in 3MF or STEP, or a shape that isn't here? Describe it instead.

What you can change

Teeth
860 · default 16
Chain pitch
320 mm · default 6.35 mm
Plate thickness
215 mm · default 4 mm
Hub diameter
860 mm · default 20 mm
Bore
230 mm · default 8 mm

This part is generated from a hand-written, print-tested OpenSCAD module — the same numbers always produce the same geometry. It is not an AI guess, and it does not cost a credit. Before a load-bearing or fit-critical print, check it against our design guide for wall thickness, overhangs and orientation.