Automobile hub bearing durable reasons

At present, small bus wheel bearings mainly use sealed double - row contact bearings. This bearing is filled with grease to provide lubrication for the whole life of the bearing through the lubrication seal inside the bearing.

This kind of wheel bearing is maintenance-free if there is damage to the assembly directly, and basically no maintenance is needed in the middle of the journey.

Automotive hub bearings have now developed to the third generation: the first generation is composed of double row angular contact bearings. The second generation has a flange for fixing the bearing in the outer raceway. The bearing can be simply bussed to the wheel shaft and fixed with a nut. It makes the maintenance of the car easier. The third generation hub bearing unit adopts the bearing unit and anti-lock brake system ABS.

Many automotive hub bearings are sealed and do not require grease throughout their life. Other non-sealed bearings such as double row tapered roller bearings must be lubricated with grease during installation. Because the size of the inner cavity of the bearing is different, it is difficult to determine how much oil to add. It is important to ensure that there is oil in the bearing. If the oil is too much, when the bearing rotates, the excess oil will ooze out.