STLGen

All generators › Gears and drives

Gear pair maker

Two gears that mesh, from the shaft spacing and the ratio you need.

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 gear pair maker

Tell it how far apart your two shafts are and how many teeth each gear has, and it works out the tooth size so the pair meshes exactly. Both gears are shown meshed.

  • The ratio is the tooth count of gear B divided by gear A.
  • Helical pairs come with opposite slants, ready to mesh.
  • Add a little play between teeth if the printed pair binds.

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

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