Deep Groove Ball Bearings Wear mechanism
With the continuous development of bearings, the wear mechanism and form also changed. In the course of work, the general lubrication of the bearing due to the relative sliding of the inner and outer rings, causing the bearing surface material loss, resulting in bearings can not work properly. The main wear forms are adhesive wear, abrasive wear and corrosion wear three types. Deep groove ball bearing wear is the work of the pad and the inner and outer ring relative to the slide, causing the liner off, tear, extrusion and other failure forms, resulting in bearings can not work properly.
The role of bearing lubrication can be briefly described as follows:
a. An oil film is formed between the two rolling surfaces or sliding surfaces which are in contact with each other to separate the two surfaces to reduce the friction and wear of the contact surfaces.
b. When using oil lubrication, especially the use of circulating oil lubrication, oil mist lubrication and fuel lubrication, the oil can take deep groove ball bearings within the majority of friction heat, play an effective heat dissipation.
c. When using grease lubrication, can prevent external dust and other foreign matter into the bearing, play a closed role.
d. Lubricants have a role in preventing metal corrosion.
extend the fatigue life of the bearing. As we all know, the appearance of the work will always be thousands of table head in the deep groove ball bearing end or axis of the appropriate parts, even using the most modern manufacturing technology skf bearing parts. Observe the reading with the preload load changes. The preload method has its unfavorable aspects, such as increasing the friction torque of the imported bearings, increasing the temperature rise, shortening the life expectancy, etc., so to fully consider the different geometric errors of different levels, roller bearings and measuring the clearance, the shaft Or the bearing housing is to be rotated in different directions for several weeks to ensure that the ball end deep groove ball bearing has proper contact with the guide flange on the inner ring.
Self-lubricating layer is constantly thinning, resulting in skf bearing wear depth increases. It can be seen that the reason for the failure of the bearing is that it is continuously squeezed out during the swing, and the lubrication function is reduced, resulting in wear of the braided base material. 1, shaft and deep groove ball bearing room tolerance selection and control:
Deep groove ball bearings into the deep groove ball bearings should be flexible after the rotation without blocking sense. If there is a clear rotation is not flexible, it means that the size of the shaft is too large, the tolerance to be reduced. Such as deep groove ball bearings into the shaft after the hand rotation with a clear sense of sand, it may be too much tolerance of the shaft or shaft roundness is not good. So in the control of shaft and deep groove ball bearing room tolerance should also control the roundness, the current domestic manufacturers only to control the tolerance, there is no control of the roundness.