P = M·ω

Mechanical power from torque and speed

P = M·ω; at fixed speed, double torque means double power.

MINTSI
01

Inputs

Mechanical power at the shaft.

Transmitted torque.

Revolutions per minute.

02

Result

Select a target and calculate.

Calculation

P = 2π · n · M / 60

P = M·ω; at fixed speed, double torque means double power.

Understand the inputs
  • Shaft power PMechanical power at the shaft.
  • Torque MTransmitted torque.
  • Rotational speed nRevolutions per minute.
Example

47.75 N·m at 1,500 rpm is about 7.5 kW.

Assumptions and limits

Constant torque and 100% shaft-to-load efficiency.

Sources