Electric Motor Rpm Chart

P number of poles.

Electric motor rpm chart.

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. N revolution per minute rpm alternatively. Dcac single phaseac three phase enter current in voltage. The motor speed in rpm is calculated as n s 2 cdot 60 cdot dfrac f p.

T inlb p hp 63025 n 1. For example 50 hz or 60 hz. A enter speed in rpm. At no load you have maximum speed and zero torque.

Motor torque changes with the speed. Enter the input voltage in volts current in amps speed in rpm and power factor. Pulley and speed calculator. F supply frequency hz.

Check the circle next to the item you are solving for and enter the remain three items in the spaces provided. 60hz is the most common frequency in the us. Hz frequency or cycles sec. Simply enter the values and click calculate.

T ftlb torque lb f ft. Rpm shaft rotation speed or revolutions per minute. Torque in imperial units can be calculated as. T inlb torque in lb f.

Below is a small calculator that will solve the ratio for you. Poles number of poles of your motor. Choose the motor types. 50hz is the most common frequency outside the us.

1750 rpm 1000 rpm 3 5 inches d 2 d 2 6 125 inches. 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. This can be found on the nameplate of the motor. P hp horsepower delivered by the electric motor hp.

T ftlb p hp 5252 n 1b. For example 2 or 4. For dc motor pf is one. V enter current in amps.

So for example if you have a 4 pole motor on 60 hz then rpm 60 2 4 60 1800 rpm. 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. 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. Calculating the rpm resulting from a motor and speed reducer assembly requires only basic mathematical knowledge.

If you have any problems with the pulley calculator please email us. 1 ft lb f 1 356 nm. The motor speed calculator calculates the synchronous motor speed from the following parameters.