Cylindrical Roller Bearings SKF NJ2309 ECP

The SKF NJ2309 ECP cylindrical roller bearing, measuring 45x100x36 mm, withstands high radial loads and serves as a single-sided support bearing.

The NJ2309 ECP cylindrical roller bearing combines a high-load-carrying cylindrical roller geometry with a compact design for shaft diameters of 45 mm. As an open, single-row rolling bearing in the SKF Explorer series, the design features an optimised internal structure. Two fixed flanges on the outer ring and one fixed flange on the inner ring enable the bearing to accommodate axial forces from one direction. As a result, the NJ series is specifically designed to support shaft guides that must carry not only primary radial loads but also single-sided axial forces.

What is the NJ2309 ECP cylindrical roller bearing suitable for?

Users employ this bearing arrangement in shaft systems subject to high radial operating forces and with single-sided axial fixation. As the inner ring is removable from one side, the unit can be fitted separately. In the event of axial thermal expansion of the shaft, the design allows for displacement in one direction, whilst the opposite direction remains positively supported. The permissible temperature range is from –30 to +120 degrees Celsius.

What features does the NJ design with a polyamide cage offer?

The suffix ECP denotes a polyamide cage and optimised roller guidance. This cage reduces the weight of the rolling element guidance and promotes smooth running under normal operating conditions. The bearing has the standard radial clearance and features dimensional accuracy to P0/PN (ABEC 1) as well as running accuracy to P6 (ABEC 3). The outer ring is designed without a groove or lubrication bore, so that lubrication is supplied via the surrounding housing.