There are three main reasons for the large axial vibration of the motor: 1. Electromagnetic. 2. Mechanical aspects 3. Electromechanical hybrid aspects
Electromagnetic
Power supply: three-phase voltage (unbalanced, three-phase motor runs under phase loss)
Stator: iron core becomes elliptical, eccentric, loose, winding is broken, ground breakdown, short circuit between turns, wiring error, the...
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