What should I do if the journal and bearing chamber of the motor wear out?

June 05, 2019

When the motor is running under long-term oil shortage, the following two situations often occur due to the increased friction between the ball and the inner and outer rings of the bearing:
(1) As the outer ring of the bearing rotates with the rotor shaft of the motor, the uranium bearing chamber is rubbed to increase the clearance between the bearing chamber and the outer ring of the bearing.
(2) The entire bearing does not move, and the bearing inner ring and the rotating shaft slide relative to each other, so that the inner ring of the bearing and the rotating shaft are not tightly fitted.
If these two phenomena are not eliminated in time, the rotor core may be rubbed, causing the iron core to heat up, and in severe cases, the motor windings may be burnt and the windings may be short-circuited. In general, the following methods can be used to handle this type of failure:

First, a weld is applied to the wear portion of the journal and then ground to the desired size. In addition, a layer of chrome can be applied to the worn parts and then ground to normal size. If the wear is too large, the journal car is small and then a sleeve is placed with a heat jacket and then machined to the desired fit size.

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