Cylindrical Roller Bearings SKF NU330 ECM

The SKF NU330 ECM cylindrical roller bearing is a separable idler bearing with a brass cage, designed for high radial loads, with dimensions of 150 × 320 × 65 mm.

This single-row NU330 ECM cylindrical roller bearing, acting as a non-locating bearing, absorbs purely radial forces and allows for axial compensation directly within the component. SKF offers this design in the Explorer performance class. Two fixed flanges on the outer ring guide the roller set, whilst the inner ring has no flanges. This design allows the inner ring to be removed from either side, which facilitates installation with tight fits on the shaft.

What is the NU330 ECM cylindrical roller bearing suitable for?

The NU330 ECM cylindrical roller bearing is suitable for bearing arrangements subject to high radial forces, where thermal length changes in the shaft need to be compensated for. As a floating bearing, the design compensates for axial displacement between the inner and outer rings without constraint. The solid brass cage supports smooth running under vibrations and varying speeds and is designed to withstand demanding mechanical loads.

What are the distinctive features of the NU design with a brass cage?

The NU design completely separates the inner and outer rings, allowing both bearing rings to be fitted independently of one another. This simplifies installation in machine housings and protects the raceways from damage during fitting. The solid brass cage, designated by the suffix ECM, guides the cylindrical rollers precisely within the roller set. With standard radial clearance and a running accuracy of class P6, this open roller bearing is suitable for operating temperatures ranging from –30 to +150 degrees Celsius.