ball bearing

Bearing as an important selection part of the motor, if the production process can improve the performance of the bearing while improving the performance of the motor. In order to let you understand the countermeasures to improve the performance of motor bearing production, the following relevant introduction is hoped to help you.

The countermeasures to improve the performance of motor bearings in the production process are mainly the following six key points:

1, the motor assembly site should be kept clean, bearing coated with grease, the site is not allowed to fly dust. The parts matched with the bearing must go through strict inspection before assembly, and any small link can not be ignored. For example, the shaft shoulder at the match of the shaft and the bearing, if it is cleared without rounded corners, it is easy to produce stress concentration during operation and twist the shaft here; If the rounded Angle is too large, or the grinding process is not in place, the interference amount of the inner ring will be out of whack when the bearing is installed, or the bearing can not be in place, which is the root of premature bearing damage.

2, the dynamic balance quality is a crucial factor affecting the bearing life. The larger the motor, the higher the speed, the higher the quality requirements for dynamic balance.

3, bearing related parts - frame, end cover, rotor, bearing inner, outer cover of the coaxial degree is better, and ensure that in the operation of the motor not due to the deformation of the parts are destroyed.

4, the processing accuracy of bearing related parts should be improved. Because the processing accuracy of the bearing itself is very high, and when the bearing is matched with the relevant parts, the very small interference amount will cause the damage of the bearing. It is proved by practice that the tolerance zone can be controlled within about 0.02mm by using CNC machine tool with "fixed size tool" for machining bearing chamber.

5, the roughness of the match with the bearing inner and outer rings should also be improved as much as possible, otherwise, after multiple disassembly and grinding off the "knife peak" of the gold processing, the original design of the match tolerance will also change.

6, the grease should be appropriate, otherwise the bearing should heat up. If the ambient temperature is higher than 40 ° C, choose a grease with a higher penetration degree. On the contrary, low penetration or special greases should be used.