Electric Motor Rpm Chart

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.

Electric motor rpm chart.

60hz is the most common frequency in the us. 50hz is the most common frequency outside the us. Electrical motor power velocity and torque equations. Choose the motor types.

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. Hz frequency or cycles sec. Poles number of poles of your motor. N revolution per minute rpm alternatively.

P hp horsepower delivered by the electric motor hp. Below is a small calculator that will solve the ratio for you. T inlb torque in lb f. Rpm shaft rotation speed or revolutions per minute.

The motor speed calculator calculates the synchronous motor speed from the following parameters. Enter the input voltage in volts current in amps speed in rpm and power factor. The motor speed in rpm is calculated as n s 2 cdot 60 cdot dfrac f p. For dc motor pf is one.

At no load you have maximum speed and zero torque. V enter current in amps. This can be found on the nameplate of the motor. So for example if you have a 4 pole motor on 60 hz then rpm 60 2 4 60 1800 rpm.

If you have any problems with the pulley calculator please email us. Motor torque changes with the speed. 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. Dcac single phaseac three phase enter current in voltage.

For example 50 hz or 60 hz. 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. T ftlb torque lb f ft. 1 ft lb f 1 356 nm.

Simply enter the values and click calculate. P number of poles. Calculating the rpm resulting from a motor and speed reducer assembly requires only basic mathematical knowledge. T ftlb p hp 5252 n 1b.

F supply frequency hz. Torque in imperial units can be calculated as. Pulley and speed calculator. Check the circle next to the item you are solving for and enter the remain three items in the spaces provided.

A enter speed in rpm. 1750 rpm 1000 rpm 3 5 inches d 2 d 2 6 125 inches. For example 2 or 4.