This kind of bearing is composed by drawn cup thin-walled outer ring, cage and needle rollers. This bearing can afford maximum with a minimum space required. This bearing is ideal to install where there are little space and the housing is not suitable for roller. The bearings are easily installed with a press fit in the housing and normally require no further axial fixing.
Comparing with end open type bearings, the end closed type bearings have lip seals which, under normal operating conditions, protect the bearing from contamination and prevent grease leakage.