Cylindrical Roller Bearings SKF NJ307 ECP

The SKF NJ307 ECP single-row cylindrical roller bearing, measuring 35x80x21 mm, can accommodate high radial loads and acts as a support bearing.

This SKF NJ307 ECP cylindrical roller bearing belongs to the range of single-row radial roller bearings and features an optimised internal design in the Explorer version. This open roller bearing has the following main dimensions: a bore diameter of 35 mm, an outer diameter of 80 mm and a width of 21 mm. Thanks to the line contact between the roller bodies and raceways, the design can withstand considerable radial forces with normal radial clearance. It is primarily used in shaft mountings where dimensionally stable components with precise guidance are required.

How does the NJ307 ECP cylindrical roller bearing support axial forces as a support bearing?

Thanks to its NJ design, this model functions as a support bearing. In addition to the predominant radial forces, it also absorbs axial forces from one direction, as the inner ring has a fixed flange. At the same time, the inner ring remains removable from one side, which facilitates mechanical installation and any maintenance work. As the bearing is of an open design, the surrounding housing structure requires external sealing and a suitable lubrication supply via grease or oil within a temperature range of -30 to +120 degrees.

What are the advantages of the ECP design with a polyamide cage?

The suffix ECP denotes a roller-guided polyamide cage combined with a reinforced internal geometry. This cage is characterised by its low weight, which reduces inertial forces during rapid changes in speed and minimises friction within the roller set. In conjunction with dimensional accuracy to tolerance class P0 (ABEC 1) and improved running accuracy to P6 (ABEC 3), this design ensures smooth guidance of the cylindrical rollers with minimal heat build-up.