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Robot Shaft Torque and Gear Power Calculator

Resolve force and lever angle into output torque, then calculate geared motor torque and mechanical power without inventing electrical current.

Use this result well

Inputs that matter
Applied force magnitude (N), Lever-arm length (m), Angle between lever and force (degrees), Required output shaft speed (rpm), and 3 more
Output to expect
Robot shaft torque and geared power
  • Check the units and required inputs before comparing results.
  • Keep the assumptions with a copied result so you can reproduce the calculation later.
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Reference & details

How it works

Robot shaft torque and geared power

Resolve a force about the output shaft using its lever arm and angle, then map output torque and speed through a specified reduction and mechanical efficiency. Electrical input current requires separate motor and driver data.

Output torque = force × radius × sin(angle); mechanical output W = torque × rpm × 2π/60; motor torque = output torque / (reduction × efficiency).

Updated: September 2026

Example Scenarios

Try this example to see the calculation, then enter actual documented values and preserve the measurement conditions. A failed or unresolved comparison is part of the record.

→ 2 N·m required output torque

FAQ

Resolve a force about the output shaft using its lever arm and angle, then map output torque and speed through a specified reduction and mechanical efficiency. Electrical input current requires separate motor and driver data.

Use the exact equipment data, measurement point, operating conditions and units described in the selected mode. Record source documents, dates and unresolved conditions in Sources and assumptions. Built-in examples illustrate arithmetic; they are not manufacturer ratings or approved designs.

Use Save planning case for an explicit local history entry. Copy MD keeps current inputs and notes; Download CSV exports the result breakdown. Export portable copies before clearing storage and save a separate case after changing equipment, conditions or measurements.

About Robot Shaft Torque and Gear Power Calculator

Resolve a force about the output shaft using its lever arm and angle, then map output torque and speed through a specified reduction and mechanical efficiency. Electrical input current requires separate motor and driver data.