Cylindrical Roller Bearings SKF NJ308 ECP/C3

The SKF NJ308 ECP/C3 cylindrical roller bearing, measuring 40x90x23 mm, offers high radial load-carrying capacity and axial guidance in one direction.

This single-row cylindrical roller bearing NJ308 ECP/C3 from SKF is designed for demanding industrial applications involving high radial forces. Thanks to its design as a support bearing, the construction accommodates axial displacement of the shaft in one direction. The inner ring can be removed from one side, which facilitates installation in the housing or on the shaft. As an open bearing, it can be flexibly integrated into existing lubrication systems.

In which applications is the NJ308 ECP/C3 cylindrical roller bearing used?

The NJ308 ECP/C3 cylindrical roller bearing is primarily suitable for bearing arrangements in mechanical and plant engineering where high radial forces are present and single-sided axial support of the shaft is required. It serves as a support bearing in shaft guides with defined axial fixation. Thanks to its optimised internal design, the rolling bearing distributes the contact pressure evenly across the sets of rollers. The open design allows for targeted lubrication with oil or grease via the surrounding machine housing.

What is the function of the polyamide cage and the C3 clearance?

The polyamide cage (suffix ECP) is characterised by low friction and a low weight, which keeps the rolling elements stable even at varying speeds. The slightly increased radial clearance (C3) compensates for thermal expansion at operating temperatures between –30 and +120 degrees. Furthermore, the increased radial clearance compensates for any pressure caused by tight fits. With a running accuracy of class P6, this design ensures low-vibration and smooth operation.