Loading
/custom-emojis/emojis/contour-map.png
Templates
📚
Articles & Resources
📖
Guides & Support
🎖️
Bounty Program
🌵
CalcTree
Welcome! This page will allow you to perform an electric motor torque calculation using motor speed and specified power rating. Motor torque, speed and power are directly related and are some of the most important considerations when selecting a motor.
Calculating the speed and torque will give you an important design parameter when selecting a motor.

Calculation

Inputs



P
:3kW



Nm, RPM
:1800


Output



T
:15.9154943nm



Explanation

The torque output of a motor is the amount of rotational force that the motor develops. Torque is generated differently for different motors (DC, induction, synchronous). See the list below for an explanation of how torque is developed for each type of motor.

Torque Generation


T=602πP1000NmT = \frac {60}{2\pi} * \frac { P*1000} {Nm}
Where

T=Torque(Nm)P=PowerRating(kW)Nm=MotorSpeed(RPM)T = Torque \: (Nm) \\ P = Power \: Rating \: (kW) \\ Nm = Motor \: Speed \: (RPM)

Related Resources

Check out our full library of CalcTree templates here!
  1. AC Induction Motor Speed
  2. Generator Fault Current
  3. Ohm's Law