Cylindrical Roller Bearings SKF NU316 ECM

The SKF NU316 ECM cylindrical roller bearing, with dimensions of 80 × 170 × 39 mm and a brass cage, provides a robust free-running bearing solution for demanding shaft arrangements.

As a single-row cylindrical roller bearing, the NU316 ECM is designed for high radial loads. Thanks to the line contact of the cylindrical rollers, the bearing can accommodate high radial forces. In the NU version, the outer ring has two fixed guide flanges, whilst the inner ring has no flanges. The bearing has no seals, allowing the lubricant to circulate freely within the housing.

What function does the NU316 ECM cylindrical roller bearing fulfil as a floating bearing?

The roller bearing serves primarily as a pure idler bearing to compensate for thermal length changes in the shaft. As the flangeless inner ring can be removed from both sides, the shaft can move axially relative to the housing. This design effectively prevents axial stress in the bearing system. Typical applications include industrial gearboxes, electric motors and machine components in which shafts with a diameter of 80 mm are mounted.

What technical characteristics do the cage and bearing rings offer?

The integrated brass cage guides the rollers stably even under thermal stress within a temperature range of –30 to +150 degrees. Furthermore, the separable design facilitates handling during assembly: the inner and outer rings can be fitted separately and then joined together. With standard radial bearing clearance, dimensional accuracy to Class P0 or ABEC 1, and running accuracy to P6 or ABEC 3, the component ensures precise concentricity.