Deep Groove Ball Bearings SKF 6209 -2RS1/C3

The SKF 6209 -2RS1/C3 deep groove ball bearing, measuring 45x85x19 mm, with double-sided laboured seals and a C3 clearance, offers protection against contamination under thermal loads.

The single-row deep groove ball bearing 6209 -2RS1/C3 is a radial ball bearing from SKF. It primarily accommodates radial forces as well as axial loads in both directions. Manufactured from standard 100Cr6 rolling bearing steel and fitted with a dimensionally stable sheet steel cage, this rolling bearing is designed for demanding industrial applications. The 2RS1 seals on both sides protect the bearing interior from dirt particles, whilst the permissible temperature range of –20 to +120 degrees Celsius defines the operating conditions.

What requirements does the 6209 -2RS1/C3 deep-groove ball bearing meet in practice?

This radial deep-groove ball bearing is typically used in rotating systems and mechanical drive units where rotational speeds, temperature rise and exposure to contaminants all come into play. The contact seals, which provide sealing on both sides, are designed for environments subject to dust or splashing water. Designs in general mechanical engineering utilise the version with rolling elements made from standard rolling-bearing steel when low-maintenance bearing arrangements with defined installation dimensions are required.

When is the combination of a 2RS1 seal and C3 bearing clearance appropriate?

The slightly increased factory-set radial bearing clearance (C3) compensates for operational thermal expansion without causing the rolling elements to become stressed. This is recommended for tight fits on the 45 mm shaft or where there are temperature gradients between the inner and outer rings. This is complemented by the 2RS1 sealing discs, which seal on both sides, retaining the lubricant within the bearing and keeping solid contaminants out. Before installation, check whether the tolerance class P0/PN or ABEC 1 meets the requirements of the bearing housing.