Cylindrical Roller Bearings SKF NJ203 ECP

The SKF NJ203 ECP cylindrical roller bearing, measuring 17x40x12 mm, offers high radial load-carrying capacity and single-sided axial guidance when used as a support bearing.

The SKF NJ203 ECP cylindrical roller bearing is a single-row radial roller bearing with an optimised internal design. Designed for shafts with a diameter of 17 mm, this design combines compact dimensions with high radial load-carrying capacity. Thanks to the NJ design, featuring two fixed flanges on the outer ring and one flange on the inner ring, the construction also accommodates single-direction axial forces. This open roller bearing is suitable for lubricated bearing arrangements with normal radial clearance.

When is the NJ203 ECP cylindrical roller bearing recommended?

This support bearing is used when high radial forces are acting and, at the same time, axial guidance of the shaft in one direction is required. The axial displacement in the opposite direction allows thermal expansion of the shaft to be compensated for when the bearing arrangement is combined with a suitable mating bearing. As the inner ring can be removed from one side, the shaft and housing can be fitted separately.

What advantages do polyamide cages and tolerances offer when selecting bearings?

The ECP design features a lightweight polyamide cage combined with an improved internal geometry. The material absorbs shocks, reduces friction and operates reliably within a temperature range of -30 to +120 degrees. In terms of tolerances, the bearing has a dimensional accuracy of P0 (ABEC 1) and a finer running accuracy of P6 (ABEC 3). As there are no integrated seals, a suitable housing seal must be provided.