Cylindrical Roller Bearings SKF NJ312 ECP

The SKF NJ312 ECP cylindrical roller bearing combines dimensions of 60x130x31 mm with a high radial load capacity and single-sided axial guidance of the shaft.

The NJ312 ECP cylindrical roller bearing is an open, single-row radial roller bearing in the SKF Explorer design with an optimised internal structure. This design is intended for applications where high radial forces act on the bearing location. Thanks to two fixed flanges on the outer ring and one fixed flange on the inner ring, this design functions as a classic support bearing. It accommodates predominant radial loads as well as axial forces from one direction, whilst the inner ring remains removable from one side for quick installation.

In which bearing arrangements is the NJ312 ECP cylindrical roller bearing used?

This support bearing is used where precise radial guidance is required and unilateral axial forces need to be supported. The axial displacement allows thermal length changes in the shaft to be compensated for. As the component is of open design and the outer ring is manufactured without a groove or lubrication bore, the lubricant is supplied via the housing system. The running accuracy to P6 ensures low-vibration concentricity on rotating shafts.

What are the distinctive features of the polyamide cage in the NJ312 ECP?

The suffix ECP denotes the combination of an optimised internal design and a polyamide cage that guides the cylindrical rollers. This cage material reduces the weight of the rolling element guide and is designed for a temperature range of –30 to +120 degrees Celsius. The bearing is manufactured with standard radial clearance. Whilst the dimensional accuracy corresponds to tolerance class Normal (P0), the tighter running accuracy P6 ensures reduced runout deviations during operation.