Deep Groove Ball Bearings SKF 6311 -2RS1

The SKF 6311-2RS1 deep groove ball bearing, measuring 55x120x29 mm and featuring a ground seal on both sides, provides protection against contamination under radial loads.

The 6311 -2RS1 deep groove ball bearing is a single-row radial ball bearing made from standard rolling bearing steel (100Cr6). The SKF design primarily absorbs radial forces, but also supports axial forces in both directions thanks to the deep groove geometry of the raceways. A robust sheet steel cage keeps the rolling elements spaced apart and guides them within the permissible temperature range of –20 to +120 degrees Celsius.

In which installation situations is the 6311-2RS1 deep groove ball bearing used?

This rolling bearing is used to support rotating shafts in applications involving combined radial and axial forces. With key dimensions of 55 mm inner diameter, 120 mm outer diameter and 29 mm width, this design is suitable for stable bearing arrangements. The cylindrical outer ring has no flange or ring groove, meaning it can be fitted directly into a cylindrical housing bore.

What are the key features of the seal and bearing clearance in the 6311-2RS1?

The seals, which contact the bearing on both sides, shield the interior of the bearing against the ingress of dust, dirt particles and moisture, whilst retaining the lubricant within the bearing. Together with the standard radial bearing clearance and tolerance class P0 or ABEC 1, this design is intended for applications where operating temperatures are stable and no excessive thermal expansion of the shaft is to be expected.