Structure of a Stepper Motor Stator

The stepper motor consists primarily of two parts: a stator and a rotor. The rotor in turn is made up of three components: rotor cup 1, rotor cup 2 and a permanent magnet. The rotor is magnetized in the axial direction so that, for example, if rotor cup 1 is polarized north, rotor cup 2 will be polarized south.

The stator has 10 magnetic poles with small teeth, each pole being provided a winding.