Cylindrical Roller Bearings SKF NJ208 ECP

The SKF NJ208 ECP cylindrical roller bearing, with a 40 mm bore, 80 mm outer diameter and a polyamide cage, offers high radial load-carrying capacity in a compact design.

The SKF NJ208 ECP cylindrical roller bearing is a single-row rolling bearing in the Explorer design with an optimised internal structure. The design is primarily intended to accommodate high radial loads. Thanks to solid flanges on the outer ring and the inner ring, which can be removed from one side, this variant functions as a support bearing. With key dimensions of 40 mm inner diameter, 80 mm outer diameter and 18 mm width, this open bearing is suitable for applications in general mechanical engineering.

What are the suitable applications for the NJ208 ECP cylindrical roller bearing?

This bearing is suitable for bearing arrangements subject to high radial loads which must also accommodate one-sided axial forces. Typical applications include shaft mountings subjected to combined loads. As the NJ design allows for axial displacement of the shaft in one direction, it easily compensates for thermal length changes. This prevents unacceptable stresses in the overall system and promotes smooth running under variable operating conditions.

What are the distinctive features of the polyamide cage and the design?

The polyamide cage in the ECP version reduces the moving mass in the rolling element set and supports favourable running characteristics within a temperature range of -30 to +120 degrees Celsius. Dimensional accuracy complies with class P0 (ABEC 1), whilst running accuracy to P6 (ABEC 3) is designed to ensure precise roller guidance. As the outer ring is manufactured without a groove or lubrication bore, the lubricant is supplied directly via the installation space in the housing.