TIMKEN bearing can be used correctly without errors , can be used for a long time. On the other hand, there are unexpected early damage, and not stand using the early damage, as the early damage reasons, use scare lubrication are not considered enough, then there is foreign intrusion, bearing assembly error and the deflection of the shaft, the shaft and a bearing box research. Can say, these reasons are overlapped with each other 's situation is more and more.