Electric Motor Rpm Calculator

F supply frequency hz.

Electric motor rpm calculator.

The torque delivered from an electrical motor producing 0 75 kw 750 w at speed 2000 rpm can be calculated as t 750 w 9 549 2000 rpm 3 6 nm example torque from an electrical motor. For example if your small pulley is 80mm diameter and spins at 1000 rpm and you need to find the second pulley size to spin it at 400 rpm enter pulley1 80 pulley 1 rpm 1000 pulley 2 rpm 400 and. Calculator of the rotation speed in r p m revolutions per minute of an electric motor from frequency hz and number of poles. Motors run at a specific revolutions per minute rpm and a speed reducer is needed if you want to keep that motor but have a lower rpm.

Below is a small calculator that will solve the ratio for you. Related mobile apps from the engineering toolbox. 1 hp 0 745 kw. Pulley and speed calculator.

Motor torque changes with the speed. The motor speed calculator calculates the synchronous motor speed from the following parameters. In order to more accurately meausre the prm i suggest that use the professional tool to help. Below product is a great tool to measure the rpm of motors.

In fact many factors affect the test result such as battery discharge rating motor windings propeller loading and motor efficiency etc. Load adds mechanical resistance. 1750 rpm 1000 rpm 3 5 inches d 2 d 2 6 125 inches. Enter the input voltage in volts current in amps speed in rpm and power factor.

V enter current in amps. A enter speed in rpm. In our example input electrical power of the motor is 0 22 a x 6 v 1 32 w output mechanical power is 1000 rpm x 2 x 3 14 x 0 00126 n m 60 0 132 w. Calculating the rpm resulting from a motor and speed reducer assembly requires only basic mathematical knowledge.

For example 50 hz or 60 hz. 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. Write down the rated rpm of your motor. For dc motor pf is one.

Choose the motor types. Rla running load amps current drawn during normal operation of electric motor. Enter any 3 known values to calculate the 4th if you know any 3 values pulley sizes or rpm and need to calculate the 4th enter the 3 known values and hit calculate to find the missing value. Check the circle next to the item you are solving for and enter the remain three items in the spaces provided.

For example 5000 rpm. A handy tool for checking the prm of brushless motors. P number of poles.