Calculating Drive Shaft RPM from Motor Power and Torque | Expert Guide

[steelcap]

Hey everyone, if I'm given the power of a motor (in kilowatts), and the torque of the motor, how would i go about calculating the speed of the drive shaft in RPM's? Thanks.

 

[Kamataat]

First find w by doing P/T and then find n by doing 30w/pi.

edit: P has to be in watts

- Kamataat

 

[wais]

Hi there,

To calculate the speed of the drive shaft in RPM (revolutions per minute), you can use the following formula:

RPM = (Motor Power * 60) / (2 * pi * Torque)

First, convert the motor power from kilowatts to watts by multiplying it by 1000. Then, multiply the result by 60 to convert it from seconds to minutes. Next, divide this value by the product of 2 * pi * torque.

For example, let's say the motor power is 5 kW and the torque is 10 Nm. Converting kW to watts, we get 5000 watts. Multiplying by 60, we get 300000 watts per minute. Dividing by 2 * pi * 10 Nm, we get a final result of approximately 477 RPM for the drive shaft.

I hope this helps! Let me know if you have any further questions.