Cylindrical Roller Bearings SKF NJ2212 ECP/C3

The SKF NJ2212 ECP/C3 cylindrical roller bearing offers high radial load-carrying capacity with a 60 mm bore, 110 mm outer diameter and 28 mm width.

The SKF NJ2212 ECP/C3 cylindrical roller bearing is a single-row radial roller bearing with an optimised internal design for heavy loads. As a support bearing, this design accommodates not only high radial forces but also axial forces in one direction. The inner ring has a fixed flange and can be removed from one side, which facilitates the separate assembly of the inner and outer rings. Thanks to its open design without sealing washers, the bearing is particularly suitable for oil- or grease-lubricated housings.

What is the NJ2212 ECP/C3 cylindrical roller bearing suitable for in operation?

The NJ design guides the shaft axially in one direction, whilst the bearing compensates for thermal length changes in the shaft in the opposite direction. It is primarily used in industrial drives and bearing arrangements subject to high radial forces. The integrated polyamide cage ensures quiet running and maintains a uniform spacing between the rollers. Thanks to its permissible temperature range of –30 to +120 degrees, the roller bearing operates stably even under thermally demanding operating conditions.

What does the C3 clearance rating mean for the NJ2212 design?

The designation C3 indicates a slightly increased radial clearance compared with the standard clearance. This additional clearance helps to prevent the bearing from becoming stressed should temperature differences arise between the inner and outer rings, or should tight fits cause the inner ring to expand. In the design, it should be noted that the running accuracy corresponds to class P6, whilst the dimensional accuracy is to class P0. As the outer ring has neither lubrication grooves nor bores, the lubricant is fed laterally onto the raceways.