Source:未知Author:HONBbearing07 Addtime:2021-10-14 09:00 Click:
The life of the bearing is closely related to manufacturing, assembly, and use, and every link must be done well in order to make the bearing in the best operating state, thereby prolonging the life of the bearing.
How to use bearing correctly?
1. Selection and control of tolerances of shafts and bearing chambers
After the bearing is pressed into the bearing, it should rotate flexibly without any sense of blocking. If there is obvious inflexible rotation, it indicates that the size of the shaft is too large and the tolerance needs to be lowered. If the bearing is pressed into the shaft and turned by hand and there is an obvious sense of "sand", it may be that the tolerance of the shaft is too large or the roundness of the shaft is not good. Therefore, when controlling the tolerance of the shaft and the bearing chamber, the roundness should also be controlled. At present, many domestic manufacturers only control the tolerance, but do not control the roundness.
2.Assembly method of bearing
Because bearings are high-precision products, improper assembly can easily cause damage to the bearings and cause damage to the bearings. When assembling the bearing, special tools should be provided, and it cannot be knocked at will. When pressing into the shaft, only a small circle can be subjected to force, and when a large circle is pressed, only a large circle can be subjected to force. Air pressure or hydraulic pressure is required for assembly, and the upper and lower molds should be in a horizontal state during press-fitting. If there is a tilt, the bearing will be damaged due to force and cause abnormal noise.
3.Prevention of assembly foreign matter
When the bearing is installed on the rotor for dynamic balancing, it is easy for the iron filings generated during the dynamic balancing to enter the inside of the bearing, so it is best to perform dynamic balancing before installing the bearing. For the convenience of assembly, some manufacturers apply some oil or grease in the bearing chamber for lubrication effect during assembly. However, it is often difficult for operators to control the amount. If a large amount of oil or grease accumulates in the bearing chamber, it will be very It is easy to enter the inside of the bearing along the shaft. It is best not to coat the bearing room with oil or grease.
Paint rust mostly occurs in sealed motors. The sound of the motor is very good when assembled, but after a period of time in the warehouse, the abnormal noise of the motor becomes very loud, and the bearing is severely rusted when it is removed. In the past, many manufacturers thought it was a bearing problem. After our constant publicity, now the motor factory has realized that it is mainly the problem of insulating paint. This problem is mainly because the acidic substance volatilized from the insulating paint forms corrosive substances at a certain temperature and humidity, which causes bearing damage after corroding the bearing groove. At present, the problem can only be to choose a good insulating paint, and ventilate for a period of time after drying and assembly.
Luoyang Hongyuan Bearing Technology Co., Ltd. (HONB) was established in December 2005, located in the Luoyang ,China. HONB with more than 400 employees which specializes in manufacture of YRT,YRTS,YRTM,ZKLDF Series rotary table bearings, RA,RB,RE,RU,CRBH,SX Series crossed roller bearings and CSG,SHG,HYR series robot reducer bearings. The precision grades are P2, P4 and P5, and the size range is 20mm ~2000mm.
YRT rotary table bearings
ZKLDF axial angular contact ball bearings