Deep Groove Ball Bearings SKF 6221

The SKF 6221 deep groove ball bearing, with dimensions of 105 × 190 × 36 mm, offers a robust, open bearing solution for predominantly radial loads in conventional mechanical engineering.

The 6221 deep groove ball bearing is a single-row rolling bearing in the SKF Explorer series. Manufactured from standard 100Cr6 bearing steel, this bearing type primarily absorbs radial forces, guides shafts precisely and also supports moderate axial forces in both directions. Due to its unsealed design, the bearing is particularly suitable for assemblies with external housing seals and targeted lubrication via oil or grease.

What loads does the 6221 deep groove ball bearing accommodate?

This rolling bearing primarily absorbs radial forces and, for shaft diameters of 105 mm, simultaneously supports moderate axial loads in both directions. The combination of deep raceways and closely guided rolling elements enables continuous rotational movement under uniform load conditions. The Explorer version is characterised by a specially optimised surface finish on the raceways, which reduces frictional resistance and promotes smooth running of the shaft bearing.

What are the key considerations for the open design of the 6221 bearing?

As this model does not have integrated sealing washers, the design focuses on protection against dirt particles. An effective housing seal protects against the ingress of foreign matter and helps to maintain the lubricating film. The bearing features a dimensionally stable sheet steel cage that maintains an even spacing between the rolling elements. With its standard radial clearance and standard tolerance class P0 (ABEC 1), the bearing can be fitted to standardised shaft and housing seats.