What is a Rotor?

The rotor is the non-stationary part of the electric 3 phase induction motor system found in a spindle. It is part of the spindle shaft. It rotates because the wires and magnetic field of the motor are arranged so that a torque is developed about the rotor’s axis.

Failures: Failures of this component are rare
Overheat: Excessive loads can cause a rotor to melt
Rotational contact: The rotor can be damaged by contact with stationary objects during rotation
Improper installation: Can cause the rotor to loosen from the shaft

Recommended repair procedure: The only fix for a damaged rotor is replacement.