Motor shaft and the bearing chamber wear how to do?

When the motor in the long run short of oil under the condition of operation, as a result of the ball bearing and the bearing inner and outer friction increases, often appear the following two conditions: ( 1) Bearing outer ring as the rotation of the motor rotor shaft friction uranium bearing chamber, the clearance in the bearing chamber and the bearing outer ring increase. ( 2) The bearing, and bearing inner ring and shaft relative sliding, bearing inner ring and the shaft with the neck is not tight. If do not eliminate the two phenomena in time, may make, rub rotor iron core, thus triggering core fever, serious when they burn out motor winding, winding short circuit. Usually, can use the following method to deal with this problem: first in the shaft neck surfacing welding the wear area, and then to the required size of grinding. In addition, also can wear out parts of a layer of chromium plating, and then the car ground to normal size. If excessive wear, the journal small car after heat set set on a socket, and then processing to the desired size.