Rotary Actuator Calculator

Calculate torque and flow requirements for vane-type and rack-and-pinion rotary actuators.

Input Parameters

Results

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Output Torque
lb·ft
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Flow Required
GPM
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Power
HP
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Angular Velocity
rad/s
Note: Vane actuators are compact but limited to ~280° rotation. Rack-and-pinion can achieve 360°+ rotation.

Reference

Torque = (P × Disp × η) / (2π × 12) [lb·ft] Flow = (Disp × RPM) / 231 [GPM] Power = (Torque × RPM) / 5252 [HP] Vane η ≈ 0.85, Rack & Pinion η ≈ 0.90