Cylindrical Roller Bearings SKF NJ216 ECP/C3

The SKF NJ216 ECP/C3 cylindrical roller bearing functions as a single-row support bearing with a polyamide cage and increased clearance (C3) for high radial loads.

The SKF NJ216 ECP/C3 cylindrical roller bearing, as a single-row rolling bearing, accommodates significant radial loads. Thanks to its optimised internal design, the roller arrangement offers high load-carrying capacity during operation. As an open bearing, this design has no integrated sealing washers. This allows lubricant to reach the raceways unimpeded. The polyamide cage guides the cylindrical rollers precisely and reduces the moving mass compared with solid metal cages.

What are the distinctive features of the NJ design in the NJ216 ECP/C3 cylindrical roller bearing?

This design is intended for bearing arrangements that must transmit not only significant radial forces but also unilateral axial guidance forces. Thanks to the NJ design, the component has two fixed flanges on the outer ring and one fixed flange on the inner ring, thereby acting as a support bearing with axial displacement in the opposite direction. The inner ring can be removed from one side, which facilitates the separate installation of the shaft and housing.

What is the function of the polyamide cage and the C3 clearance?

The version with the suffix combination ECP/C3 combines a lightweight plastic cage with increased radial bearing clearance. The designation C3 indicates a greater operating clearance than the standard version. This feature compensates for thermal expansion between the inner and outer rings should elevated operating temperatures occur during operation. The polyamide cage operates quietly and retains its dimensional stability within the permissible temperature range of -30 to +120 degrees. As the outer ring is designed without a lubrication groove or lubrication bore, the lubricant is supplied via the lateral connection.