How to deal with the wear of the inner hole of the motor end cover

The end cover is a back cover installed behind the motor casing, commonly known as "end cover". The end cap serves two purposes:
1. Axial positioning of the bearing outer ring;
2. Dustproof and sealing, in addition to its own dustproof and sealing, it often cooperates with seals to achieve sealing.
Next, I will introduce the method of repairing the wear of the inner hole of the end cover. I hope it can help you:
1. The easiest and most direct way to solve the fault: to buy a new end cap, it is recommended to buy a standard end cap of the same type from the original manufacturer, and the motor can be used normally after replacing it.
2. Insert repair method: When the roundness and coaxiality of the bearing seat hole of the end cover of the variable frequency speed regulation motor exceeds 0.006cm, the boring repair should be carried out, and an enlarged bearing outer ring should be added.
Or insert a cast iron sleeve in the end cover bearing seat hole, the thickness of the cast iron sleeve is 6-7mm, and use the original type of bearing.
The dimensional accuracy of the inner circle of the conventional motor end cover bearing is H6.
3. Brush plating repair method: When the coaxiality of the inner hole of the end cover exceeds the allowable value but does not exceed 0.006cm, the end cover bearing seat hole can be repaired by electric brush plating.
4. There is also an emergency remedy for the wear of the inner hole of the end cover: use a high-hardness sharp punch to pock the surface of the bearing seat hole to make the metal surface uneven to reduce the inner diameter of the seat hole. Increase the cooperation tightness between the outer ring and the seat hole. This method is suitable for the situation where the bearing seat hole of the end cover of the small variable frequency speed regulation motor is slightly worn, and it is only a temporary emergency measure.
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