Electric Motor Rpm Chart

Hz frequency or cycles sec.

Electric motor rpm chart.

V enter current in amps. 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. Electrical motor power velocity and torque equations. 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.

50hz is the most common frequency outside the us. For example 2 or 4. 60hz is the most common frequency in the us. T ftlb p hp 5252 n 1b.

Rpm shaft rotation speed or revolutions per minute. 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. Poles number of poles of your motor.

Check the circle next to the item you are solving for and enter the remain three items in the spaces provided. P number of poles. At no load you have maximum speed and zero torque. Motor torque changes with the speed.

Choose the motor types. So for example if you have a 4 pole motor on 60 hz then rpm 60 2 4 60 1800 rpm. For example 50 hz or 60 hz. If you have any problems with the pulley calculator please email us.

Calculating the rpm resulting from a motor and speed reducer assembly requires only basic mathematical knowledge. Torque in imperial units can be calculated as. 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. A enter speed in rpm.

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. For dc motor pf is one. Dcac single phaseac three phase enter current in voltage. P hp horsepower delivered by the electric motor hp.

Below is a small calculator that will solve the ratio for you. T ftlb torque lb f ft. This can be found on the nameplate of the motor. 1 ft lb f 1 356 nm.

F supply frequency hz. The motor speed in rpm is calculated as n s 2 cdot 60 cdot dfrac f p. Say you want to know what size pulley to use on that old planer to get 3450 rpm you know the motor rpm is 1725 and the pulley on the motor is 6. The motor speed calculator calculates the synchronous motor speed from the following parameters.

T inlb torque in lb f. Pulley and speed calculator. This simple to use calculator will give you the correct size pulley or motor speed to use if you know the actual or desired information.