When the DC motor is in use, if you do not pay attention to the maintenance, it will cause the bearing to be too tight or damaged. In order to avoid this situation, you need to take certain measures. The reason why the DC motor bearing is too tight is what?

The operator is afraid that the end cover bearing chamber of the car will be scrapped. When the DC motor is repaired, the matching tolerance of the bearing outer ring and the end cover should be suitable. Emphasis on using the lower limit of the tolerance range, and unwilling to reach the upper limit, which makes the diameter of the bearing chamber small, and increases the amount of interference with the outer ring of the bearing; There is not enough awareness of the noise reduction benefits of DC motor bearings. For example, when dismantling the motor bearing, it is found that the outer ring of the bearing and the end cover are very easy to disassemble, and it is mistaken for the bearing to be too loose, so it is solved by padding copper skin, punching holes, or even replacing the end cover, or replacing the bearing and expanding the diameter of the outer ring. The most common method for this problem is to expand the end cover bearing, and then insert the sleeve to make the bearing fit closely with the end cover bearing chamber. As a result, the bearing noise increases after the motor is repaired, and the bearing heats up.

Regarding the over-tightening of the bearing, when operating and maintaining the equipment, you should pay attention to the operation method. If you do not understand the situation, you should consult the manufacturer for operation. Do not operate at will, causing damage and failure of the equipment. In order to further understand the defects in the operation of the brushless DC gear motor, an inspection test can be done before disassembly if conditions permit.