What can occur if bearings in an electrical motor are over-greased?

When bearings in an electrical motor are over-greased, it can lead to several detrimental effects, with potential damage to windings and the stator being a prominent concern. Over-greasing can cause excessive pressure within the bearing chamber, which forces grease beyond the bearing and into areas where it is not needed, ultimately interfering with the operation of the motor.

This excess grease can accumulate in the windings or stator, leading to insulation breakdown and other electrical issues. In severe cases, the motor could experience overheating or failure due to restricted movement of the rotor or interference with the electrical components. Maintaining the appropriate amount of lubricant is crucial for the smooth operation of the motor, and an excess can significantly compromise its efficiency and longevity.