Cylindrical Roller Bearings SKF NJ310 ECP/C3

The SKF NJ310 ECP/C3 cylindrical roller bearing is a single-row support bearing with a polyamide cage and increased C3 clearance for high radial loads.

The SKF NJ310 ECP/C3 cylindrical roller bearing is characterised by its optimised internal design. With dimensions of a 50 mm bore, 110 mm outer diameter and 27 mm width, this single-row roller bearing can accommodate considerable radial forces. As an open design without seals and without a groove or lubrication bore in the outer ring, the bearing requires an external lubricant supply. With dimensional accuracy P0 and increased running accuracy to P6, the unit meets demanding operational requirements in industrial environments.

What is the NJ310 ECP/C3 cylindrical roller bearing suitable for?

This single-row cylindrical roller bearing is primarily used as a support bearing in mechanical drives and bearing arrangements. Thanks to its NJ design, the bearing accommodates not only high radial forces but also axial forces from one direction. The inner ring can be removed from one side, which facilitates the separate assembly of the inner and outer rings. A permissible temperature range of –30 to +120 degrees enables operation under thermal loads, whilst the bearing simultaneously compensates for axial displacement.

What is the function of the polyamide cage and the C3 bearing clearance in this design?

The suffix ECP denotes a lightweight polyamide cage combined with an optimised internal geometry. The cage guides the cylindrical rollers with low friction and elastically absorbs dynamic shock loads. The designation C3 stands for a slightly increased radial bearing clearance. This increased clearance between the rollers and raceways compensates for thermal expansion when the bearing heats up or for tight fits on the shaft. When designing the assembly, ensure that open bearings are adequately protected against the ingress of dirt.