Cylindrical Roller Bearings SKF NU315 ECJ

The SKF NU315 ECJ cylindrical roller bearing is a single-row non-locating bearing measuring 75 × 160 × 37 mm, designed to withstand high radial loads.

The NU315 ECJ cylindrical roller bearing is an open rolling bearing with a 75 mm bore, an outer diameter of 160 mm and a width of 37 mm. This SKF product features an optimised internal design and a guided sheet steel cage. Thanks to the line contact between the rollers and raceways, the design can withstand significant radial forces. With standard radial clearance and dimensional accuracy to P0/PN, combined with enhanced running accuracy to P6, the unit meets demanding concentricity requirements.

In which bearing arrangements is the NU315 ECJ cylindrical roller bearing used?

Typical applications for the NU315 ECJ cylindrical roller bearing are in mechanical bearing arrangements where high radial forces are the primary load. As cylindrical roller bearings of this design do not accommodate axial forces, they are specifically used as non-locating bearings. The permissible temperature range is from –30 to +150 degrees Celsius. In sealed housings with a lubricant supply, the open bearing utilises the surrounding oil or grease to lubricate the contact surfaces.

What is the function of the NU design with a removable inner ring?

The NU design is characterised by two fixed flanges on the outer ring and a flangeless inner ring. During operation, the bearing compensates for changes in shaft length caused by thermal expansion axially and without constraint between the rollers and the inner ring. In addition, the inner ring can be removed from both sides. This facilitates assembly, as the inner and outer rings can be fitted separately onto the shaft and housing. An external housing seal is required to ensure safe operation.