Harmonic Drive Calculator

Calculate harmonic (strain wave) drive gear ratio, output torque, and performance specs. Harmonic drives provide high ratios with zero backlash in a compact package.

Must be even number, typically 100-320

Usually Zf + 2

Typical: 65-85% depending on ratio and speed

Gear Ratio
--
:1 reduction
Output Torque
--
N*m
Output Speed
--
RPM
Torque Margin
--
% above required
Typical Backlash
--
arc-min
Output Power
--
W
Heat Dissipation
--
W (loss)

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