Angular Ring for Cylindrical Roller Bearings

The angular ring for cylindrical roller bearings is an auxiliary part that mounts on the inner ring of NU series cylindrical roller bearings. It is not a bearing itself: its function is to axially retain the rollers, make assembly easier, and accept small axial loads in one direction only. It is selected according to the bearing it will work with, because it must match in diameter, width, and mounting geometry. The catalog includes 30 SKF references.

The HJ EC designation identifies the ring construction: the HJ series corresponds to angular rings for NU bearings and the EC suffix indicates the associated cage and roller design. The example HJ 222 EC shows how the part number is built: the central number refers to the bearing it combines with. For each size there is a specific variant, so the equivalence with the bearing is the key data when selecting.

It is used in equipment where the NU bearing works with radial load and it is necessary to limit the axial movement of the shaft, such as gearboxes, pumps, industrial fans, and machine tools. It also simplifies assembly in housings where the inner ring is fixed to the shaft and it is convenient to immobilize the rollers during assembly. In applications with alternating axial load it does not replace an angular contact ball bearing: it only handles forces in one direction.

To request a quote for an HJ EC angular ring, you need the part number of the NU bearing it will be used with or, failing that, the overall dimensions: bore diameter, outside diameter, width, and series number. If you already have the ring part number, send it as is. An equivalent from another brand is also useful, because interchangeability is based on the dimensions of the associated bearing.

MR Accesorios Industriales SRL sells these rings from Buenos Aires, Argentina, with more than 80 years of experience in industrial distribution. Write to us via WhatsApp or email with the part number or dimensions and we will send you a quote.