by 
The bearing in the assembly should not be bump and impact, bump and impact easily formed between the collision of bearing parts, resulting in bearing failure. Bearing seat roll edge to pay attention to control the edge of the angle, strength and other factors, to prevent the edge of the unreasonable formation of bearing parts of the deformation of the effectiveness. On has exceeded the anti-rust period or storage time longer bearing, rolling bearing commission life have considerable potential to develop rust or due to anti-rust oil dry and roller sticky dead condition.