SKF 61908-2RS1 Rubber Sealed Thin Section Deep Groove Ball Bearing 40x62x12mm

Equivalent to 6908-2RS

The SKF 61908-2RS1 sealed thin-section deep groove ball bearing is intended for rotating machinery where reducing housing dimensions is important without moving to an extremely thin bearing section. Compared with the 61808 series of the same bore, its wider cross-section provides greater load-carrying capacity while retaining a compact 619 series profile. Its single row ball arrangement supports radial loads and moderate axial forces in either direction, within the bearing's rated limits. SKF catalogue specifications give a basic dynamic load rating of 13.8kN, a basic static load rating of 10kN and a limiting speed of 6,700rpm. These figures help assess suitability for equipment subject to continuous rotation, changing loads and restricted installation space.

The 2RS1 rubber contact seals retain factory grease and reduce the entry of contaminants, making this bearing useful where regular relubrication is difficult. Contact sealing introduces greater running resistance than an open or non-contact sealed design, so operating speed and temperature should be considered together. Normal radial internal clearance suits correctly specified standard-clearance arrangements, but shaft interference fits and thermal expansion can reduce the remaining clearance after installation. Accurate alignment, suitable housing support and correct mounting pressure are important to preserve running performance. When replacing an existing bearing, verify the full designation, particularly if the original installation specifies C3 clearance or a different seal arrangement.

Typical Applications:

Compact industrial motor assemblies

Automation and rotary positioning equipment

Light-duty pump and ventilation mechanisms

Conveyor rollers and handling equipment

Space-restricted mechanical drive systems