Needle Rollers and Cage Assemblies
The cage of the needle rollers and cage assemblies are acting an important role for the bearings to operate at high speed, in addition to high load carrying capacity. There are neither inner rings nor outer rings, the cage holds the needle rollers, with its low cross section that provides the maximum load carrying capacity, and within the smallest radial space among all types of bearings. The cage is uniquely designed to precisely hold the needle rollers to possibly reduce stresses of bearing during operations, and allowing moderate shaft misalignment so that to extend the bearing life span.
Drawn Cup Needle Roller Bearings
Drawn cup needle roller bearings have a unique thin walled structure of outer rings with either open or closed end. The drawn cup is the thinnest outer ring among all types of rolling bearings. In spite of thin outer rings, drawn cup needle roller bearings have capability of carrying high radial loads. This construction of bearings is suitable for application in case when the housing bore cannot be used as a raceway (same as for needle roller and cage assemblies), but a very compact bearing arrangement is required.