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
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
- 8–60 · default 16
- Chain pitch
- 3–20 mm · default 6.35 mm
- Plate thickness
- 2–15 mm · default 4 mm
- Hub diameter
- 12–60 mm · default 20 mm
- Bore
- 2–30 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.
Print notes for this part
- Default pitch 6.35 mm is #25 roller chain (common on go-karts, mini bikes, light machinery). Bicycle chain is 12.7 mm — set pitch to that, not teeth, to switch.
- A printed sprocket under real chain tension is a wear part, not a permanent one — fine for a low-torque prototype or a one-off repair, not a long-term drivetrain component in PLA.
- hub_d must clear the chain's roller diameter or the chain rubs the hub instead of running free — check against your actual chain before printing at a tight hub_d.
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