Cylindrical Roller Bearings SKF NJ2204 ECP

The SKF NJ2204 ECP cylindrical roller bearing, with dimensions of 20x47x18 mm, offers high radial load-carrying capacity and axial guidance in one direction.

This SKF NJ2204 ECP cylindrical roller bearing is a single-row radial roller bearing with an optimised internal design in the Explorer series. The bearing primarily accommodates heavy radial loads and provides axial guidance to the shaft in one direction via the flanges. The inner ring, which can be removed from one side, allows the open bearing to be fitted separately. In industrial drives and shaft mountings, it serves as a compact support bearing at operating temperatures ranging from -30 to +120 degrees.

What is the NJ2204 ECP support bearing design suitable for?

The NJ design features two fixed flanges on the outer ring and one fixed flange on the inner ring. This makes the bearing suitable for accommodating unidirectional axial forces in addition to high radial loads. In the opposite direction, the design allows for axial displacement, ensuring that thermal length changes in the shaft do not lead to internal stresses. Common applications include mechanical engineering and industrial powertrains, where precise guidance and ease of disassembly are required for installation.

What role do the polyamide cage and bearing clearance play in the design?

The suffix ECP denotes a lightweight polyamide cage which precisely guides the cylindrical rollers and helps to reduce friction. Together with the standard radial bearing clearance, this design is intended for typical operating temperatures and standardised mounting fits. As this is an open bearing without an integrated seal, the bearing housing must be sealed via the casing and supplied with a suitable lubricant. Dimensional accuracy complies with tolerance class P0 or ABEC 1, whilst running accuracy of P6 or ABEC 3 ensures quiet operation.