Cylindrical Roller Bearings SKF NUP211 ECP

The SKF NUP211 ECP cylindrical roller bearing (55x100x21 mm) is a single-row fixed bearing designed to accommodate high radial loads and provide axial guidance on both sides.

The SKF NUP211 ECP cylindrical roller bearing combines high radial load-carrying capacity with precise axial fixation of the shaft. As a single-row roller bearing with main dimensions of 55 mm bore, 100 mm outer diameter and 21 mm width, this model is used for load-bearing applications in general mechanical engineering. The Explorer-quality version features an optimised internal design, whilst the standard radial clearance is designed for many common installation scenarios. As this is an open bearing, you can flexibly select the lubricant and external sealing elements to suit your application.

What is the NUP211 ECP cylindrical roller bearing suitable for as a fixed bearing?

This cylindrical roller bearing functions as a fixed bearing due to its flange configuration. Two fixed flanges on the outer ring, as well as one fixed flange and one loose flange disc on the inner ring, guide the shaft in both axial directions. Typical applications include bearing arrangements where, in addition to high radial forces, alternating or limited axial forces are also present. The open design without sealing discs allows for free lubrication with grease or oil via the surrounding structure.

What is the function of the polyamide cage and the tolerance class?

The abbreviation ECP denotes a polyamide cage which guides the rollers and, due to its low weight, reduces friction in the rolling element ring. The permissible temperature range is from –30 to +120 degrees. Precise running characteristics result from the optimised manufacturing process: Dimensional accuracy complies with tolerance class P0 or ABEC 1, whilst running accuracy is manufactured to class P6 or ABEC 3. This ensures smooth, even rotation under standard operating conditions, provided that misalignment errors are avoided.