Electric Motor Torque Calculator

This calculator can be used to estimate the motor size and gear ratio when building or modifying electric scooters bikes go karts and other types of electric vehicles.

Electric motor torque calculator. P hp horsepower delivered by the electric motor hp. N revolution per minute rpm alternatively. T displaystyle frac 60 2 pi cdot displaystyle frac p cdot 1000 n parameters. Torque n m 9 5488 x power kw speed rpm power kw torque n m x speed rpm 9.

The following calculators compute the various torque aspects of motors. Enter the motor rated voltage in volts v enter the motor power rating and select the appropriate unit hp or kw enter the power factor and efficiency of the. Related mobile apps from the engineering toolbox. Measuring the torque of the motor is a challenging task.

Motor rating in kw. 98 83 nm the motor toque t in n m is calculated with the following equation. E p out p in. This motor full load amperage fla calculator allows you to calculate the full load current of the ac electric motor.

The unit of torque is n m newton meter. Electric motors produce a high amount of torque under load so for example an electric scooter bike or go kart with a 500 watt motor and one rider could be geared to go 20. Rla running load amps current drawn during normal operation of electric motor. Calculators kw hp power torque hpl kw 3 phase mot.

Torque in imperial units can be calculated as. Power torque torque lb in 63 025 x power hp speed rpm power hp torque lb in x speed rpm 63 025. T ftlb p hp 5252 n 1b. Horsepower to torque converter is an online tool used in electrical engineering to calculate how much torque will be generated according to the input power value either in horsepower or watts.

In the calculator above fla is rla 25. It requires special expensive equipment. T ftlb torque lb f ft. The motor speed for ac motors can be caculated with the motor speed calculator.

These equations are for estimation only friction windage and other factors are not taken into consideration. Select the number of phases from the drop down list. Torque is nothing but a momentary force developed at the time of force is applied to the motor. T inlb torque in lb f.

How to calculate torque of motor. Electrical motor power velocity and torque equations. The motors have enough torque and speed to do all kinds of experiments and calculations. Efficiency of the motor is calculated as mechanical output power divided by electrical input power.

1 ft lb f 1 356 nm. 1 hp 0 745 kw. T inlb p hp 63025 n 1. Fla full load amps amount of current drawn when full load torque and horsepower is reached for the motor fla is usually determined in laboratory tests note.

Generally horsepower is a unit for measuring the power of various electrical motors piston engines steam turbines etc and it is equal to 746 watts or 33 0000 lb ft per. Horse power and speed in rpm.