Gear Lab

Planetary gearsets with true involute profiles. Exports SVG and DXF in millimetres.

Design driver

solve for

target ratio

ring pitch dia

module

sun teeth

planet teeth

ring teeth

planets

pressure angle

backlash mm

addendum ×m

dedendum ×m

sun bore

planet bore

ring rim

chord tolerance

Straight segments become one flat face each on extrude. Tips and roots export as true arcs, so they cost one curved face instead of a dozen flats.

rated torque Nm

peak torque Nm

no-load rpm

sun

planets

ring

speed pitch circles