Cycloidal disc
The lobed disc at the heart of a cycloidal reducer — very high gear ratio in a flat package.
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Dimensions
60 mm
11
6 mm
20 mm
6
No account, no credit. Want it in 3MF or STEP, or a shape that isn't here? Describe it instead.
What you can change
- Outer diameter
- 25–150 mm · default 60 mm
- Lobes
- 5–25 · default 11
- Thickness
- 2–25 mm · default 6 mm
- Centre bore
- 0–60 mm · default 20 mm
- Output pin holes
- 0–12 · default 6
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
- This is one disc of a cycloidal reducer, not a complete gearbox — a real drive needs an eccentric input bearing and a ring of output pins engaging pin_holes, neither of which is included.
- Lobe count sets the reduction ratio (lobes:1 against a lobes+1-pin ring) — more lobes means a higher ratio but also shallower, more delicate lobe tips at a given outer_d.
- Print flat, face down, no supports needed — the lobed profile and pin holes are both cut straight through the flat disc.
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