Cylindrical Roller Bearings SKF NJ318 ECP

The SKF NJ318 ECP single-row cylindrical roller bearing (90x190x43 mm) is designed as a support bearing with a polyamide cage for high radial loads.

The NJ318 ECP cylindrical roller bearing is an open, single-row radial roller bearing in the SKF Explorer series with an optimised internal design. With a bore of 90 mm, an outer diameter of 190 mm and a width of 43 mm, this roller bearing can accommodate very high radial loads. Thanks to the standard radial clearance and the lightweight polyamide cage, the design is suitable for a wide range of industrial gearboxes and shaft mountings where precise guidance and load-carrying capacity are required.

What is the NJ318 ECP cylindrical roller bearing suitable for in operation?

In industrial powertrains and machinery, the bearing is used where high radial forces act on the shaft. As a support bearing, the NJ design accommodates not only the dominant radial load but also unilateral axial guidance forces. Furthermore, the component allows for axial displacement in the opposite direction, ensuring that thermal length changes in the shaft do not cause the system to become stressed. Relevant fields of application include robust gearboxes and shaft mountings with single-sided axial support in continuous operation.

What are the distinctive features of the NJ design with a polyamide cage?

The NJ design features two fixed flanges on the outer ring and one fixed flange on the inner ring. This allows the inner ring to be removed from one side, which facilitates the separate assembly of the inner and outer rings. The integrated polyamide cage ensures low inertial forces within the temperature range of –30 to +120 degrees. The tolerance class is relevant for the design: dimensional accuracy P0/PN (ABEC 1) is combined here with increased running accuracy to P6 (ABEC 3).