Cylindrical Roller Bearings SKF NJ313 ECP/C3

The SKF NJ313 ECP/C3 single-row cylindrical roller bearing, measuring 65 × 140 × 33 mm, with a support bearing function and C3 clearance, offers high radial load-carrying capacity under thermal linear expansion.

The SKF NJ313 ECP/C3 cylindrical roller bearing is an open, single-row roller bearing with a bore of 65 mm, an outer diameter of 140 mm and a width of 33 mm. Designed as a support bearing, this design accommodates high radial loads as well as axial forces from one direction. Thanks to the optimised internal design and the inner ring, which can be removed from one side, assembly can be carried out flexibly and in separate stages.

What is the NJ313 ECP/C3 cylindrical roller bearing suitable for as a support bearing?

This support bearing is primarily used where heavy radial forces are present and, at the same time, single-sided axial fixation of the shaft is required. As the inner ring has a fixed flange, the design allows for axial displacement in the opposite direction. This compensates for temperature-induced changes in the shaft’s length. Typical applications include bearing arrangements where high rigidity, axial length compensation and separate installation of the inner and outer rings are required.

What role do polyamide cages and C3 clearance play in the selection process?

When designing your bearing arrangement, the cage material and bearing clearance have a significant influence on operational behaviour. The polyamide cage is characterised by low friction and low weight, which promotes smooth running. The design is suitable for operating temperatures ranging from –30 to +120 degrees. The increased radial clearance (C3) helps to ensure that sufficient operating clearance is maintained even when the bearing heats up during operation or where tight fits have been specified. As this is an open bearing, external lubrication is required to ensure proper function.