Cylindrical Roller Bearings FAG NU230 -E-M1

The FAG NU230 -E-M1 cylindrical roller bearing is an open, single-row idler bearing with a brass cage, designed for shaft diameters of 150 mm.

The NU230 -E-M1 cylindrical roller bearing is characterised by a high radial load capacity with dimensions of 150 mm bore, 270 mm outer diameter and 45 mm width. Designed as an open rolling bearing, this version is suitable for lubricated assemblies in general mechanical engineering and in industrial drive systems. Thanks to the line contact between the rollers and raceways, the design can withstand very high radial forces.

What function does the NU230 -E-M1 cylindrical roller bearing fulfil as a non-locating bearing?

This cylindrical roller bearing is primarily used to support high radial loads in industrial gearboxes and machine designs with a separate fixed and idler bearing arrangement. In the NU design, the unit functions purely as an idler bearing. The inner ring has no flanges and can be removed axially from both sides during assembly. As a result, the bearing compensates for operational length changes in the shaft due to thermal expansion with low friction within the bearing, without axial constraint stresses being exerted on the adjacent structure.

What are the advantages of the brass cage in the NU230 -E-M1 design?

The solid brass cage guides the cylindrical rollers precisely within the raceway, even under vibration and shock loads. Brass withstands high mechanical stresses and is suitable for operating temperatures ranging from –30 to +150 degrees. As the outer ring is manufactured without a lubrication groove or lubrication bore, the lubricant is supplied via the surrounding housing structure. The design in tolerance class P0 (ABEC 1) complies with the standardised specifications for common fits.