Cylindrical Roller Bearings FAG NU2228 -E-M1

The FAG NU2228 -E-M1 cylindrical roller bearing, measuring 140 × 250 × 68 mm, serves as a robust idler bearing with a brass cage for high radial loads.

As a single-row radial roller bearing, the NU2228 -E-M1 cylindrical roller bearing can withstand very high radial loads. In machine designs with a 140 mm shaft diameter, the NU design allows axial length changes to be compensated for directly within the bearing. FAG equips this open rolling bearing with a solid brass cage, enabling it to withstand mechanical stresses during continuous industrial operation. The design without seals allows for direct operation within the customer’s oil or grease circulation system.

What is the NU2228 -E-M1 cylindrical roller bearing suitable for?

Design engineers prefer to use the NU2228 -E-M1 cylindrical roller bearing in mechanical drive trains and heavy-duty bearing arrangements subject to purely radial loads. As the inner ring has no flanges and can be removed from both sides, the bearing arrangement functions purely as a non-locating bearing. If thermal expansion of the shaft occurs during operation, the inner ring moves freely relative to the roller ring in the outer ring. This helps to prevent axial stress and protects adjacent components from additional loads.

What are the advantages of the brass cage in the NU design?

The solid brass cage of type -M1 guides the cylindrical rollers precisely within the roller ring, even under varying speeds and vibrations. Compared with standard cages, brass withstands higher inertial forces and is suitable for operating temperatures ranging from –30 to +150 degrees Celsius. When selecting bearings, you should also take into account the tolerance class P0/PN (ABEC 1) and the standard radial clearance. As the bearing is of an open design, external seals must prevent the ingress of dirt particles.