Cylindrical Roller Bearings SKF NUP208 ECP/C3

The SKF NUP208 ECP/C3 single-row cylindrical roller bearing, measuring 40x80x18 mm, serves as a fixed bearing for high radial loads and axial guidance on both sides.

The NUP208 ECP/C3 cylindrical roller bearing features an optimised internal design and a lightweight polyamide cage. As an open, single-row rolling bearing, this component can accommodate very high radial forces. Thanks to the NUP design, which features two fixed flanges on the outer ring, a fixed inner ring flange and a loose flange disc, the construction guides the mounted shafts in both axial directions. SKF’s manufacturing process ensures dimensional accuracy to P0/PN (ABEC 1) and increased running accuracy to P6 (ABEC 3).

What is the NUP208 ECP/C3 cylindrical roller bearing suitable for?

Designs primarily utilise this version at bearing locations where high radial forces coincide with axial fixation on both sides. As cylindrical rollers provide line contact, the system stably absorbs high transverse forces. When used as a fixed bearing, the NUP design also handles the axial positioning of the shaft, thereby eliminating the need for a separate axial bearing at this point.

What do the polyamide cage and the C3 clearance mean for selection?

The suffixes denote specific product characteristics for demanding environmental conditions. The letter P in the ECP designation stands for a polyamide cage, which ensures low-friction operation and covers the permissible operating range from –30 to +120 degrees Celsius. The C3 designation indicates a slightly increased radial bearing clearance compared with the standard clearance. This increased clearance between the rollers and raceways counteracts seizing if fit allowances or operational heating cause the inner ring to expand.