The bearing is mainly composed of inner ring, outer ring, rolling element and rolling element cage. The inner ring is tightly sleeved on the journal and rotates with the shaft. The outer ring is installed in the bore of the bearing seat. There are raceways on the outer circumference of the inner ring and the inner circumference of the outer ring. When the inner and outer rings rotate relatively, the rolling bodies roll on the raceways of the inner and outer rings, and they are separated by the cage to avoid mutual friction.
It is easy to use and maintain, reliable in work, good in startability, and high in capacity at medium speed.