Cylindrical Roller Bearings SKF NU328 ECM

The SKF NU328 ECM cylindrical roller bearing (140x300x62 mm) is a single-row idler bearing with a brass cage designed to accommodate high radial loads whilst accommodating thermal length changes.

The SKF NU328 ECM cylindrical roller bearing is designed for heavy-duty industrial applications where purely radial forces are at work. Thanks to the line contact between the cylindrical rollers, this design can accommodate high transverse forces. The Explorer version features enhanced material quality and a refined surface finish. With its standard radial clearance, the bearing is suitable for normal operating and temperature conditions.

In which applications does the NU328 ECM idler bearing prove its worth?

The bearing enables the compensation of axial shaft displacement relative to the housing. In the NU design, the outer ring has two fixed guide flanges, whilst the inner ring is manufactured without flanges. As a result, the rollers slide over the inner ring raceway during operational thermal expansion. Typical applications include bearing arrangements subject to high radial forces, where a separate fixed bearing provides axial guidance.

What are the features of the brass cage and the Explorer version?

The solid brass cage keeps the rolling elements at a fixed distance and guides them accurately even under vibrations or shock loads. Brass operates quietly and remains dimensionally stable within a temperature range of -30 to +150 degrees. The combination of dimensional accuracy to Class P0 (ABEC 1) and running accuracy to Class P6 (ABEC 3) ensures smooth running. As the inner ring can be removed from both sides, the component can be fitted separately.