The medium for heat transfer in the bearing
In addition, the heat of the bearing will also be taken away by lubricating oil, and as the temperature of the bearing rises, when the temperature is higher than that of other surrounding components, the heat will be dissipated to other media through two ways: conduction and radiation. The higher the temperature difference, the more heat will be emitted through heat transfer and radiation.
When the temperature reaches a certain value, the heat generated by friction and the heat emitted are equal, which is that the bearing is in a state of thermal equilibrium, that is, the temperature of the bearing is stable and no longer rises.
—How high the operating temperature can the general bearing withstand?
Usually, the temperature of the bearing of the general material is best not to exceed 120 degrees Celsius, otherwise it will affect the service life of the bearing.
Bearings made of high temperature metal materials – typically used at temperatures ranging from 200 to 300 degrees Celsius.
The operating temperature of ceramic bearings can reach 450 degrees Celsius.
Therefore, in fact, the temperature of the bearing is not particularly high, but the increase in the temperature of the shaft bearing is avoided by various methods.
