How long does the wheel bearing working life? What is the performance of the broken? Is wheel hub bearing need to do maintenance?

Today we have to talk about the four-wheel bearings,they don't have rubber sleeve to wrap the grease. Do you need to add lubricating oil?

In the usual maintenance of large trucks, usually need adding grease to various moving parts. All of them have special addition ports, which can be directly used with grease guns.

But the car does not need to do this maintenance, the wheel hub bearing  also need  lubricated with grease, but it is sealed overall structure. This bearing is cloursered, the grease inside will not leak, and the dirt outside will not enter. As long as the grease does not flow out, it will not be broken . so if there is no problem that the failure does not work. Therefore, the four wheels bearing do not need to be lubricated in the usual time. As long as there is no abnormality, no maintenance is needed for life.

Although there is no need to maintain, there will be some problems. The performance of the broken wheel bearing is abnormal when driving, and it is generally a squeaking sound. It is because the balls inside are out of round or have abnormal wear, and when they rotate, they will rub against the surroundings and make a sound.If with that situation ,you can have a replacement for the wheel bearings .

The life of the wheel bearings is very long. Most of them can be used for more than 100,000 kilometers. Some cars run hundreds of thousands of kilometers with good situation.