Cylindrical Roller Bearings SKF NU2208 ECP

The SKF NU2208 ECP cylindrical roller bearing is a single-row idler bearing with a polyamide cage and main dimensions of 40 × 80 × 23 mm, designed for high radial loads.

The SKF NU2208 ECP cylindrical roller bearing, as a single-row radial roller bearing, withstands high forces. Thanks to the line contact between the cylindrical rollers and the raceways, the design enables the bearing to accommodate large radial loads during operation. As part of the SKF Explorer range, the bearing features an optimised internal design for even load distribution. The inner ring, which can be removed from both sides, facilitates both separate mounting and the selection of a specific fit for the shaft and housing.

In which installation situations is the NU2208 ECP cylindrical roller bearing used?

This bearing is primarily used where high radial forces are present and axial length changes in the shaft need to be accommodated. The NU design functions as a pure idler bearing: the outer ring guides the roller set with two fixed flanges, whilst the flangeless inner ring can slide axially in both directions. Typical applications include bearing arrangements subject to thermal length changes or axial misalignment between the shaft and the housing structure. The permissible temperature range is from –30 to +120 degrees Celsius.

What are the key features of the free-end bearing design and the polyamide cage?

The polyamide cage (designation suffix ECP) maintains an even spacing between the cylindrical rolling elements, reduces the guide’s own weight and promotes quiet running. In conjunction with the standard radial bearing clearance, the component is suitable for common operating temperatures and standard fit conditions. In terms of manufacturing accuracy, the design meets the dimensional tolerance P0 or ABEC 1 and combines this with increased running accuracy of tolerance class P6 or ABEC 3 to ensure smooth guidance of the shaft.