In fact, automative bearings, especially those used in our current family cars, do not require maintenance.

Because for our family cars, the bearing load is not very large, and due to the advancement of bearing design technology, our family automotive bearings can be designed as maintenance-free bearings. This is why the rear wheel bearings we replace from family cars do not require maintenance!

The normal load of a family car is not very large, so under normal use, the automotive bearings may be replaced after the family car has traveled about 100,000 to 200,000 kilometers.

Oil seals are also used on automotive bearings. Maintenance-free automotive bearings are equivalent to forming an assembly. It contains lubricating oil and solid bearing components. The oil seal seals the lubricating oil inside the entire bearing body. When we drive, the lubricating oil will lubricate our bearing body.

When we use it for a long time, the bearing temperature will increase and the lubricating oil will become thinner. Through our oil seal, the lubricating oil is sealed in our bearing body to prevent it from flowing out.

When we stop the car, the lubricating oil will slowly cool down and the viscosity will become higher. This will repeatedly lubricate our bearings. Bearings designed like this can often be used for more than 100,000 kilometers.

Moreover, the design of automobile bearings is very precise to prevent the lubricating oil inside from flowing out, so it will be very difficult to maintain it.

Bearing damage is largely not due to lack of grease, but because the bearing material is poor and the rolling surface is damaged. This causes the bearing to produce noise during rotation. If there is no problem with the bearing itself, the designed service life of the bearing of this structure can reach more than 200,000 kilometers. Therefore, the bearing of this structure does not need to be maintained. If it is broken, it can be replaced.