![]() ![]() Power equations for electric motors: metric unitsĮlectric motors produce torque (rather than force) through rotational motion (rather than linear distance), so power is equal to torque multiplied by angular velocity: Note that distance divided by time (d/t) is velocity, so power can be written as force times velocity: Mechanical power is the time rate at which work is done, so work divided by time: Work is defined as force applied over a distance: Image credit: Bodine Electricīefore we look at how to calculate power, let’s review the relationship between power and work. But once torque and speed are defined, you’ll also want to know the required input power for the motor - particularly if the gearmotor uses an AC induction motor, where the power rating (typically given in horsepower) is used as a key factor in sizing. ![]() ![]() The first place to start when sizing a gearmotor is to determine the required output torque and speed. ![]()
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