Stepper & servo motors are some of the common types of motors in industrial settings. However, the two motors are different and you should understand them well before deciding what to buy. The stepper motors are designed with rotors that feature permanent magnets
. Besides, they also have stationary stators that have windings. When current is passed via the windings, a magnetic flux is generated and it interacts with the magnetic field from the permanent magnet to create the turning force. Most stepper motors have high pole counts that surpass 50 and are run open-loop. Servo motors, like the stepper motors, are designed with rotors with a permanent magnet. Their stationary stators also have windings that create a magnetic field when current runs through. The main difference between the servo and stepper motors is that the servo design has lower pole count. This means that they have to be run in closed-loops. Besides, they are more sophisticated compared to the stepper design.