Needle Roller Bearings with Pressed Outer Rings

NRB needle roller bearing with the pressed outer ring consists of the cage, a complement of needle rollers and an outer ring made of accurately stamped steel sheet. The low cross section of the drawn cup bearing provides maximum load-carrying capability with a minimum of space required. It is ideal for mass production.

Since the bearing uses interference of gearbox and outer ring, it do not need axial fixation. Even under heavy load and high rotational speed, a high performance still can be guaranteed. In addition, the bearing's lubrication interval can be prolonged thanks to the sealed grease volume is large than the usual bearing.

The single row needle roller bearing with the pressed outer ring hasn't the lubrication-holes and the double row needle roller bearing with the pressed outer ring has the lubrication-holes normally.

This kind of bearing normally has no inner ring. If inner is required, the IR inner ring can be chosen. There are two basic designs: Open end drawn cup needle roller bearings (such as HK type) and closed end (one side) drawn cup needle roller bearings (such as BK type) which is suitable for installing in the end of the shaft, and bear a little axial motion force.