Cylindrical Roller Bearings SKF NJ224 ECJ

The SKF NJ224 ECJ cylindrical roller bearing, with a 120 mm bore, sheet steel cage and support bearing design, offers high radial load-carrying capacity with axial guidance in one direction.

The NJ224 ECJ cylindrical roller bearing from SKF is a single-row roller bearing with an optimised internal design for demanding industrial applications. With a bore of 120 mm, an outer diameter of 215 mm and a width of 40 mm, this open bearing is primarily designed to accommodate high radial loads. Thanks to its standard radial clearance and sheet steel cage, this design is suitable for an operating temperature range of -30 to +150 degrees Celsius.

What is the NJ224 ECJ cylindrical roller bearing suitable for in operation?

It is primarily used where high radial loads occur and the shaft must simultaneously be guided in an axial direction. As a support bearing, the NJ design features two fixed flanges on the outer ring and one fixed flange on the inner ring. As a result, the bearing absorbs axial forces on one side, whilst allowing axial displacement in the opposite direction. Typical applications include general mechanical engineering, industrial gearboxes and mechanical drive trains.

What are the advantages of the NJ design with a sheet steel cage?

The design proves to be easy to install, as the inner ring can be removed from one side. The inner and outer rings can be fitted separately onto the shaft and housing, which facilitates installation in confined spaces. The integrated sheet steel cage guides the cylindrical rollers and keeps the weight of the rolling element assembly low. As the outer ring is designed without a groove or lubrication bore, the lubricant is supplied directly via the housing design.