The lubrication purpose of rolling bearings is to reduce internal friction and wear of the bearings and prevent burning and sticking. Its lubrication effect is as follows.

1. Reduce friction and wear

To prevent metal contact and reduce friction and wear in the contact parts of the ring, rolling element, and retainer that make up the bearing.

2. Extend fatigue life

The rolling fatigue life of bearings is extended when the rolling contact surface is well lubricated during rotation; On the contrary, if the viscosity of the oil is low and the thickness of the lubricating oil film is not good, it will be shortened.

3. Discharging frictional heat and cooling

The method of circulating oil can use oil to remove heat generated by friction or heat transmitted from the outside for cooling. Prevent bearing overheating and prevent lubricating oil from aging.

4. Others

It also has the effect of preventing foreign objects from entering the interior of bearings, or preventing rust and corrosion.