Cylindrical Roller Bearings SKF NU209 ECP

The SKF NU209 ECP single-row cylindrical roller bearing (45x85x19 mm) is designed as a support bearing to accommodate high radial loads in compact installation spaces.

With the NU209 ECP cylindrical roller bearing, you are choosing an open, single-row rolling bearing in the SKF Explorer design with an optimised internal construction. This version has a bore of 45 mm, an outer diameter of 85 mm and a width of 19 mm. As cylindrical rollers have a larger line contact area than balls, this component is particularly suitable for designs subject to high radial loads. It has standard radial clearance and operates within a temperature range of -30 to +120 degrees.

What are the advantages of the NU design as a non-locating bearing?

The NU design features two fixed flanges on the outer ring, whilst the inner ring is flangeless and removable from both sides. This allows the bearing to compensate, without constraint, for axial changes in the shaft length caused by thermal expansion during operation. This function prevents unacceptable axial stresses in the bearing arrangement. Furthermore, the separable design simplifies the separate mounting of the inner and outer rings onto the shaft and housing.

Why is the combination of a polyamide cage and the Explorer design important?

The polyamide cage guides the cylindrical rollers with low friction and ensures that the rolling element assembly has a low weight. Together with the optimised Explorer internal design, this supports an even load distribution across the raceways. Dimensional accuracy complies with tolerance class P0/PN (ABEC 1), whilst running accuracy is manufactured to P6 (ABEC 3). For operation, a suitable external lubrication supply and effective sealing of the surrounding housing structure must be provided.