Deep Groove Ball Bearings FAG 6308 -2RSR

The FAG 6308-2RSR deep-groove ball bearing combines dimensions of 40 × 90 × 23 mm with ground seals on both sides for protected bearing arrangements.

The 6308 -2RSR deep groove ball bearing is a single-row radial ball bearing made from standard rolling-element steel (100Cr6) with a robust sheet steel cage. FAG manufactures this rolling bearing with an internal bore of 40 mm, an external diameter of 90 mm and a width of 23 mm. The design complies with the standard tolerance class P0/PN (ABEC 1) and features a cylindrical outer ring without a flange or groove. Thanks to the integrated contact seals, the component is particularly suitable for environments where dirt and moisture need to be kept out.

What is the FAG 6308-2RSR deep groove ball bearing suitable for?

This single-row ball bearing primarily absorbs radial forces, but also supports the shaft under moderate axial loads in both directions. Typical applications are found in conventional mechanical engineering on rotating shafts subject to combined loads. As the manufacturer uses seals that seal on both sides, the lubricant remains contained within the bearing chamber. This protects the raceways from the ingress of foreign particles and splash water within the approved temperature range of –20 to +100 degrees Celsius.

What are the advantages of the 2RSR seal in combination with standard bearing clearance?

The suffix combination -2RSR denotes sealing discs fitted on both sides, which bear directly against the inner ring. Compared with open bearings or cover plates, this design reduces maintenance requirements as it prevents contaminants from entering. The bearing has standard radial clearance. This design is suitable for standard mounting fits and uniform operating temperatures, where no thermal expansion of the shaft beyond the standard tolerance needs to be compensated for.