Cylindrical Roller Bearings SKF NJ322 ECJ

The SKF NJ322 ECJ cylindrical roller bearing is a single-row support bearing measuring 110 × 240 × 50 mm, designed for high radial loads.

The NJ322 ECJ cylindrical roller bearing is an open rolling bearing with an optimised internal design. The NJ design is characterised by two fixed flanges on the outer ring and one fixed flange on the inner ring. This enables the bearing to accommodate not only primarily radial forces but also unilateral axial forces. With a bore of 110 mm, an outer diameter of 240 mm and a width of 50 mm, this design is suitable for demanding mechanical assemblies.

What is the NJ322 ECJ cylindrical roller bearing suitable for?

Design engineers primarily use this support bearing where high radial forces are present and, at the same time, axial fixation of the shaft in one direction is required. Thanks to the line contact between the cylindrical rollers and the raceways, this design offers a high radial load capacity. Typical applications include bearing arrangements subject to high radial forces and single-sided axial shaft guidance. The permissible temperature range is from –30 to +150 degrees Celsius.

When is the NJ design with a sheet steel cage the right choice?

The NJ design facilitates maintenance and assembly, as the inner ring can be removed from one side. Axial displacement is permitted in one direction, which helps to compensate for thermal length changes in the shaft. The integrated sheet steel cage guides the rolling elements at normal radial bearing clearance. The bearing meets tolerance class P0/PN (ABEC 1) for dimensional accuracy and class P6 (ABEC 3) for running accuracy. An external lubrication supply must be provided for the outer ring, which has no groove or lubrication bore.