Deep Groove Ball Bearings SKF 6211 NR

The SKF 6211 NR deep groove ball bearing combines dimensions of 55x100x21 mm with a retaining ring for easy axial fixing in the housing.

This single-row deep groove ball bearing 6211 NR from SKF accommodates radial forces as well as axial loads in both directions. The design features a ring groove with an inserted snap ring on the outer ring. Manufactured from standard rolling-bearing steel 100Cr6 and fitted with a sheet steel cage, this open bearing is suitable for designs with an external lubricant supply. Manufactured to tolerance class P0, the component is designed for standardised industrial applications.

In which designs is the 6211 NR deep groove ball bearing used?

The bearing is primarily used in rotating systems where space-saving axial retention is required. The externally mounted retaining ring reduces the installation space required in the bearing housing, as it eliminates the need for complex housing shoulders or additional retaining rings. The open component operates in externally lubricated units and withstands operating temperatures from –20 to +150 degrees. With normal radial bearing clearance, rotational movements are transmitted smoothly.

How does the ring groove with snap ring simplify housing assembly?

The suffix ‘NR’ indicates the precision ring groove, complete with a matching snap ring in the outer ring. This feature facilitates axial positioning within the housing, as the bearing abuts directly against the housing wall via the snap ring. During housing manufacture, a suitable groove is all that is required. As this is an open design without sealing washers, the bearing location must be protected from contamination by the surrounding housing structure.