Cylindrical Roller Bearings SKF NJ2308 ECP

The SKF NJ2308 ECP single-row cylindrical roller bearing with a 40 mm bore accommodates high radial loads as well as unilateral axial forces.

This open NJ2308 ECP cylindrical roller bearing, in the Explorer performance class, combines an optimised internal design with high load-carrying capacity. With dimensions of 40 mm inner diameter, 90 mm outer diameter and 33 mm width, the design is suitable for demanding industrial applications. The component has standard radial clearance and operates within a temperature range of -30 to +120 degrees. The dimensional accuracy complies with class P0/PN or ABEC 1, whilst the running accuracy is manufactured to P6 or ABEC 3.

What is the NJ2308 ECP cylindrical roller bearing suitable for?

As a support bearing, the NJ2308 ECP cylindrical roller bearing accommodates not only heavy radial forces but also axial guidance forces from one direction. The fixed flange on the inner ring allows the shaft to be locked axially in one direction, whilst the axial travel in the opposite direction compensates for thermal length changes. The outer ring is designed without a groove or lubrication bore. Typical applications are found in general mechanical engineering for shaft mountings where fixed guidance and high radial load-carrying capacity are required.

What are the advantages of the design as a support bearing with a polyamide cage?

The NJ design allows the inner ring to be removed from one side, which facilitates assembly and disassembly. Both rings can be mounted separately onto the shaft and housing. The integrated polyamide cage guides the cylindrical rolling elements with low vibration and keeps the bearing weight low. As this is an open bearing without an integrated seal, the bearing location must be sealed via the housing and supplied with a suitable lubricant.