Top rated 2 phase stepper motor manufacturer: Damaged Rotor – Problems with the rotor might also lead to vibration. The rotor’s balancing weights might break loose with time and excessive heat, which can cause vibration. A balancing machine can precisely add weight to a rotor until it is evenly distributed, eliminating vibrations produced by an unbalanced rotor. Industrial stepper motors may seem sturdy, but the magnets within the rotor are fragile and need special handling without stepper motor maintenance. If the magnet is fractured, the stepper motor will spin unsteadily or experience speed fluctuations. A total motor lockup is the …