Analysis of Friction and Wear Mechanism of Deep Groove Ball Bearing Lubrication

The friction mechanism of skf bearings is significantly different from other bearings. The friction is mainly determined by factors such as radial load, swing frequency, number of swings, swing angle, contact surface temperature and surface roughness. Generally, deep groove ball bearings produce friction when the inner and outer rings are relatively slid during movement, and the friction is large; while other bearings move, the friction between the pad layer and the inner ring or the outer ring is generated. Smaller. Studies have shown that under the same conditions, the friction coefficient of skf bearings of different materials has significant differences in the gasket material.
As the bearing continues to develop, its wear mechanism and form have also changed. During the working process, the generally lubricated bearings are caused by the relative sliding of the inner and outer rings, which causes the bearing working surface layer material to be continuously lost, resulting in the bearing not working properly. The main forms of wear are adhesive wear, abrasive wear and corrosion wear. The wear of deep groove ball bearings is due to the relative sliding of the gasket and the inner and outer rings during work, which causes the falling, tearing, extrusion and other failure modes of the gasket, resulting in the bearing not working properly.
The role of bearing lubrication can be briefly explained as follows:
a. Forming an oil film between the two rolling surfaces or sliding surfaces that contact each other to separate the two surfaces, reducing friction and wear on the contact surfaces.
b. When using oil lubrication, especially when using circulating oil lubrication, oil mist lubrication and fuel injection lubrication, the lubricating oil can take away most of the friction heat inside the deep groove ball bearing and play an effective heat dissipation effect.
c. When grease lubrication is used, foreign matter such as dust can be prevented from entering the bearing and sealing.
d. Lubricants have the effect of preventing metal corrosion.
e. Extend the fatigue life of the bearing.
As we all know, the work appearance always has a thousand points on the end of the deep groove ball bearing or the appropriate part of the shaft, even if the skf bearing parts are processed using the most advanced manufacturing technology. Observe how the reading changes with the preload load. The pre-tightening method has its disadvantages, such as increasing the friction torque of the imported bearings, increasing the temperature rise, shortening the life, etc., so it is necessary to comprehensively consider the small geometric errors of different levels, the roller bearings and the measurement of the clearance, the shaft Or the bearing housing needs to be rotated in different directions for several weeks to ensure proper contact between the ball end deep groove ball bearings and the leading edge on the inner ring.
The self-lubricating layer is continuously thinned, resulting in an increase in the wear depth of the skf bearing. It can be seen that the bearing failure is caused by the continuous extrusion of PTFE during the swinging process, the lubrication function is reduced, and finally the woven base material is worn.