Cylindrical Roller Bearings SKF NJ320 ECJ

The SKF NJ320 ECJ single-row cylindrical roller bearing supports shafts under high radial loads and provides single-sided axial guidance with a bore diameter of 100 mm.

The NJ320 ECJ cylindrical roller bearing is a robust rolling bearing designed for demanding industrial applications involving high radial forces. SKF manufactures this design with an optimised internal structure and a sheet steel cage that guides the rollers. Thanks to its open design without sealing rings, the bearing can be integrated directly into existing lubrication circuits. General engineering applications benefit from its thermal resistance in the range from –30 to +150 °C.

In which installation scenarios does the NJ320 ECJ cylindrical roller bearing prove its worth as a support bearing?

This single-row bearing is primarily used in bearing arrangements where heavy radial loads act on the shaft. Thanks to the NJ design, the component also acts as a thrust bearing. This means that it can absorb axial forces from one direction, whilst allowing displacement in the opposite direction. Typical applications include bearings in mechanical engineering where defined one-sided axial guidance is required.

What are the advantages of the NJ design with an inner ring flange?

The NJ design is characterised by 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 assembly of the shaft and housing. At the same time, the axial displacement allows for the compensation of temperature-induced changes in the length of the shaft. The component combines dimensional accuracy to tolerance class P0 (ABEC 1) with increased running accuracy to class P6 (ABEC 3).