Cylindrical Roller Bearings FAG NU304 -E-XL-M1-C3

The FAG NU304 -E-XL-M1-C3 single-row cylindrical roller bearing, with a brass cage and C3 clearance, is suitable for high radial loads with dimensions of 20x52x15 mm.

The FAG NU304 -E-XL-M1-C3 cylindrical roller bearing is an open, single-row roller bearing with a 20 mm bore, 52 mm outer diameter and 15 mm width. Due to the line contact between the cylindrical rollers and the raceway, this design can accommodate high radial forces. As a floating bearing of the NU design, the inner ring can be pulled out from either side, thereby allowing the shaft to expand and contract freely during operation. The bearing is manufactured to tolerance class P0/PN (ABEC 1).

What is the NU304 -E-XL-M1-C3 cylindrical roller bearing suitable for?

Designs subject to purely radial loads and axial linear expansion benefit from the NU design. As the inner ring has no flanges, the shaft moves relative to the housing without axial stress. The bearing is used wherever high radial forces act within a confined installation space. Preferred applications include shaft mountings in industrial machinery, where the bearing position acts purely as a floating bearing and the fixed bearing is located elsewhere.

What is the function of the brass cage and the C3 clearance in the NU304?

The solid brass cage guides the rollers precisely even under vibration and withstands mechanical loads. Furthermore, this design covers a temperature range of -30 to +150 degrees. The designation C3 stands for increased radial bearing clearance. This additional clearance between the rollers and the raceway accommodates thermal expansion caused by temperature differences between the shaft and the housing, as well as fit allowances during press-fitting, to prevent the bearing from seizing during operation.