Cylindrical Roller Bearings SKF NJ222 ECM

The SKF NJ222 ECM cylindrical roller bearing, with a 110 mm bore, brass cage and support bearing function, provides a robust bearing solution for high radial loads.

This single-row NJ222 ECM cylindrical roller bearing primarily absorbs high radial forces and, thanks to its design, guides the shaft in an axial direction. Designed as an open bearing, it can be specifically integrated into existing oil or grease lubrication systems. The solid brass cage guides the rollers precisely whilst maintaining thermal stability within a range of -30 to +150 degrees.

How does the NJ222 ECM cylindrical roller bearing accommodate radial and axial forces?

The NJ design combines a high radial load-carrying capacity with a single-sided axial guidance function. Fixed flanges on the outer and inner rings enable the absorption of one-way axial forces, whilst the opposite side provides the necessary displacement to compensate for thermal length changes. This support bearing function is used in shaft mountings that require defined one-way axial guidance in addition to primary radial loads.

What are the distinctive features of the brass cage and inner ring of the NJ222 ECM?

The machined brass cage is characterised by its dimensional stability under vibration and guides the roller set during operation. As the inner ring is removable on one side, the bearing can be fitted separately onto the shaft and housing. The standard radial clearance, combined with P0 dimensional accuracy and P6 running accuracy, ensures smooth concentricity under standard operating conditions.