Cylindrical Roller Bearings FAG NU328 -E-XL-M1-C3

The FAG NU328 -E-XL-M1-C3 cylindrical roller bearing, with dimensions of 140 × 300 × 62 mm, offers high radial load-carrying capacity as a non-locating bearing with C3 clearance and a brass cage.

The NU328 -E-XL-M1-C3 cylindrical roller bearing is a single-row radial roller bearing from FAG designed for high radial loads. The main dimensions are a bore diameter of 140 mm, an outside diameter of 300 mm and a width across flats of 62 mm. Due to the line contact between the cylindrical rollers and the raceways, this design can accommodate very high radial loads. As an open bearing, this version can be lubricated with oil or grease via an external lubrication point.

What is the NU328 -E-XL-M1-C3 cylindrical roller bearing suitable for?

Design engineers primarily use this rolling bearing in heavy-duty gearboxes and industrial drives where purely radial loads occur. As NU-type cylindrical roller bearings function purely as non-locating bearings, they accommodate thermally induced changes in shaft length directly within the bearing without any constraint. The inner ring has no flanges and can be removed from either side. This facilitates the separate mounting of the inner and outer rings onto the shaft and housing.

What are the advantages of the NU design and the C3 clearance?

The version with C3 bearing clearance has a slightly increased radial bearing clearance compared with the standard version. This additional clearance prevents the bearing from seizing if operational heating or tight fits cause radial expansion of the inner ring. The solid brass cage (M1) ensures stable roller guidance under shock loads or vibrations. The permissible operating temperature range extends from -30 °C to +150 °C.