In the use of bearings, many factors will lead to the normal use of bearings, that is, the failure of bearings.
First, the failure caused by electric corrosion
When the current flows through the rolling element from one raceway to another raceway, it can cause electrical corrosion or spark. The extent of the damage depends on the amount of energy and the length of time, but the results are often the same: electrical pitting of rollers and raceways, rapid degradation of lubricants and premature bearing failure.
Second, the failure caused by insufficient lubrication and pollution
If the lubricant viscosity is not enough or there are impurities, it will cause the lubricating oil film between the rolling body and the raceway to thin, and then lead to metal to metal surface contact. Depending on the application, in some cases it is necessary to use a high viscosity lubricant to increase the thickness of the oil film.
Third, the failure caused by vibration
If the rotor shaft of the motor is not firmly fixed during transportation, vibration may occur inside the bearing clearance, resulting in damage to the bearing.
Fourth, failure caused by incorrect installation and assembly
Common errors in installation include the use of hammers or other similar tools, bearing installation of different centers, imbalance, belt over tension, etc., resulting in bearing overload.
Fifth, the failure caused by insufficient bearing load
Bearings always require a minimum load to work properly. The damage caused by insufficient bearing preload can be manifested as adhesive wear of rollers and raceways.
