Cylindrical Roller Bearings SKF NJ2320 ECJ

The SKF NJ2320 ECJ cylindrical roller bearing, a single-row support bearing measuring 100x215x73 mm, offers high radial load-carrying capacity in a compact design.

The SKF NJ2320 ECJ cylindrical roller bearing is an open, single-row rolling bearing with an optimised internal design in the Explorer version. With a bore of 100 mm, an outside diameter of 215 mm and a width of 73 mm, this bearing can withstand very high radial forces. Thanks to its open design, the bearing can be integrated directly into existing lubrication systems and operates within a temperature range of -30 to +150 degrees.

In which installation scenarios is the NJ version used?

This version is used in bearing arrangements subject to high radial forces and single-sided axial guidance. As this is the NJ design, the outer ring has two fixed flanges and the inner ring has one fixed flange. Consequently, the bearing arrangement functions as a support bearing: it absorbs radial loads and guides shafts axially in one direction. The design compensates for axial thermal expansion in the opposite direction via the axial displacement travel.

What are the key features of the NJ design with a sheet steel cage?

The inner ring is removable on one side, which facilitates the separate assembly of the inner and outer rings. The integrated sheet steel cage guides the cylindrical rollers securely and is suitable for demanding operating temperatures ranging from –30 to +150 degrees. Furthermore, this design combines dimensional accuracy of class P0/PN (ABEC 1) with increased running accuracy to P6 (ABEC 3). When designing the system, care must be taken to provide external sealing, as the bearing is supplied without internal seals.