What are the hazards of motor shaft current to bearings?

In the process of motor operation, if there is a shaft current, the life of the motor bearing will be greatly shortened, the following to introduce you to the motor shaft current on the bearing hazard

1. Fusing low melting point alloys for plain bearings

Due to the small size of the metal contact points and the high current density of these points, shaft current will flow through the metal contact points of the bearing and shaft. High temperature will make the bearing partial melting, melted bearing alloy splashing around, leaving small burn marks or strip arc marks on the inner surface of the bearing.

2. Rolling bearing clamping or fracture

Rolling body surface and bearing collar raceway surface due to the ablation of shaft current, heat is lighter, the temperature is abnormal, heavier when mutual holding or scattering cause overcurrent protection shutdown, and even lead to burn the motor. Therefore, large and medium-sized motors in the use of rolling bearings, as long as the bearing damage accident, in the maintenance should pay extra attention to check the bearing surface trace

The above is the motor shaft current on the bearing hazards, more information about the welcome to consult Vshida micro-motor at any time!