Electric Motor Rpm Calculator

Calculator of the rotation speed in r p m revolutions per minute of an electric motor from frequency hz and number of poles.

Electric motor rpm calculator.

Pulley and speed calculator. Below is a small calculator that will solve the ratio for you. A handy tool for checking the prm of brushless motors. Dcac single phaseac three phase enter current in voltage.

Check the circle next to the item you are solving for and enter the remain three items in the spaces provided. Load adds mechanical resistance. Enter the input voltage in volts current in amps speed in rpm and power factor. 1750 rpm 1000 rpm 3 5 inches d 2 d 2 6 125 inches.

For dc motor pf is one. 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. For example 5000 rpm. In order to more accurately meausre the prm i suggest that use the professional tool to help.

1 hp 0 745 kw. Choose the motor types. The motor speed calculator calculates the synchronous motor speed from the following parameters. 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.

P number of poles. Rla running load amps current drawn during normal operation of electric motor. At no load you have maximum speed and zero torque. F supply frequency hz.

Related mobile apps from the engineering toolbox. V enter current in amps. Motor torque changes with the speed. 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.

In the calculator above fla is rla 25. Write down the rated rpm of your 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. 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.

For example 50 hz or 60 hz. Calculating the rpm resulting from a motor and speed reducer assembly requires only basic mathematical knowledge. Below product is a great tool to measure the rpm of motors.