STLGen

All generators › Gears and drives

Ring gear maker

A casing with teeth inside, and the gear that runs in it.

Drag to turn, scroll or pinch to zoom. Grid squares are 10 mm.
Building the model…
Saves an STL file in millimetres, ready for your slicer.

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should appear in your downloads folder in a moment. Click here if it does not start.

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About the ring gear maker

Set the outside size of the casing and the number of teeth, and get a ring gear with the teeth on the inside. Add an inner gear and it is shown in place, with the shaft offset worked out.

  • Any gear with the same module and at least 8 fewer teeth fits inside.
  • Mounting holes can match NEMA motors or sit on any bolt circle.
  • Add a back plate to close one side.

Everything runs in your browser: nothing is uploaded and there is no sign-up.

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