Purpose and method of bearing lubrication

Purpose of bearing lubrication:

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

(1) Reduce friction and wear.

The contact parts of the ring, rolling element and retainer of the bearing prevent metal contact and reduce friction and wear.

(2) Prolong the fatigue life.

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

(3) Discharge friction heat and cooling

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

(4) Others

It also has the effect of preventing foreign matters from invading the bearing interior, or preventing rust and corrosion.

Lubrication method:

The lubrication methods of bearings are divided into grease lubrication and oil lubrication. In order to give full play to the function of the bearing, first of all, it is necessary to select the lubrication method suitable for the use conditions and purposes. If only lubrication is considered, the lubricity of oil lubrication is dominant. However, grease lubrication has the advantage of simplifying the structure around the bearing, comparing the advantages and disadvantages of grease lubrication and oil lubrication.