Lubrication methods and advantages and disadvantages of rolling bearings
1. Purpose of lubrication
The purpose of lubrication of rolling bearings is to reduce internal friction and wear of the bearings and prevent burn-in. The lubrication effect is as follows:
1) Reduce friction and wear
In the mutual contact portion of the ferrule, the rolling element and the cage constituting the bearing, metal contact is prevented, and friction and wear are reduced.
2) Extend fatigue life
The rolling element fatigue life of the bearing is prolonged when the rolling contact surface is well lubricated during rotation. Conversely, if the oil viscosity is low and the thickness of the lubricating oil film is not good, it is shortened.
3) Eliminate friction heat and cooling
The circulation oil supply method or the like can discharge the heat generated by the friction or the heat from the outside to cool the oil. Prevent the bearing from overheating and prevent the lubricant from aging itself.
4) Other
There is also the effect of preventing foreign matter from entering the inside of the bearing or preventing rust and corrosion.
2, lubrication methods and advantages and disadvantages
The lubrication methods of the bearings are grease lubrication and oil lubrication. In order to make the bearing function well, first, choose a lubrication method that suits the conditions of use and the purpose of use. Lubricity of oil lubrication predominates if only lubrication is considered. However, grease lubrication has the advantage of simplifying the structure around the bearing.
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