Cylindrical Roller Bearings SKF NU2308 ECP/C3

The SKF NU2308 ECP/C3 cylindrical roller bearing is a single-row idler bearing with a polyamide cage, increased C3 clearance and main dimensions of 40x90x33 mm.

The SKF NU2308 ECP/C3 single-row cylindrical roller bearing, as a radial rolling bearing, can withstand high radial loads. With a bore of 40 mm, an outside diameter of 90 mm and a width of 33 mm, this model is suitable for heavy-duty shaft mountings in mechanical and plant engineering. An optimised internal design ensures low-friction operation. As the bearing is of an open design, you can integrate it directly into the lubrication system of your housing design.

What is the NU2308 ECP/C3 cylindrical roller bearing suitable for as a non-locating bearing?

In many designs, shafts must compensate for thermal length changes without internal stress. The NU2308 ECP/C3 cylindrical roller bearing performs precisely this task as a non-locating bearing. The outer ring has two fixed guide edges, whilst the inner ring is flangeless and can be removed from both sides. This allows the shaft to move freely within the rolling element cage during axial movements. At the same time, the separable design facilitates the separate mounting of the inner and outer rings in the housing and on the shaft.

What are the advantages of the C3 clearance and the polyamide cage?

The version with bearing clearance class C3 features a slightly increased radial bearing clearance. This clearance prevents the rollers from jamming when tight fits or temperature differences occur between the inner and outer rings. The lightweight polyamide cage guides the rolling elements with low friction and ensures quiet operation within a temperature range of -30 to +120 degrees. Furthermore, the running accuracy to Class P6 (ABEC 3) supports precise guidance with dimensional tolerances to Standard P0 (ABEC 1).