What’s the lubrication purpose and methods of thin section ball bearings?

Thin section ball bearings are bearings with an inner diameter to outer diameter ratio that are less than a specified value. The ratio of the outer diameter of the bearing to the inner diameter of the bearing is 1.25 or less, which is called thin section ball bearings, indicating that the outer diameter-inner diameter of the bearing is small and the bearing wall is very thin, so it is called thin section ball bearings.

Lubrication purpose of thin section ball bearings
The purpose of lubrication of rolling bearings is to reduce the internal friction and wear of the bearings, to prevent sticking, and the lubricating effect is as follows.

Reduce friction and wear
In the mutual contact portion of the ferrule, the rolling element and the retainer constituting the thin section ball bearings, metal contact is prevented, and friction and wear are reduced.
The rolling fatigue life that prolongs the fatigue life 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.

Exhaust friction heat, cooling
The circulation oil supply method or the like can be used to discharge the thin section ball bearings by the heat generated by the friction or by the heat radiated from the outside. Prevent the bearing from overheating and prevent the lubricant from aging itself.

other
There is also the effect of preventing foreign matter from entering the interior of the thin section ball bearings or preventing rust and corrosion.

lubrication method of thin section ball bearings 
Thin section ball bearings lubrication method, divided into grease lubrication and oil lubrication. In order for the thin section ball bearings to 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 thin section ball bearings, comparing the advantages and disadvantages of grease lubrication and oil lubrication.