SKF 62306-2RS1/C3 Rubber Sealed Single Row Deep Groove Ball Bearing 30x72x27mm

The SKF 62306-2RS1/C3 wide sealed deep groove ball bearing combines the 30mm bore and 72mm outside diameter of the conventional 6306 series with a substantially wider, 27mm axial profile. This additional width is important for equipment designed with deeper bearing seats, specific shaft spacers or wider retaining arrangements. The single row deep groove raceways accommodate radial loads alongside axial forces in either direction, subject to rated limits. Published specifications give a basic dynamic load rating of 28.1kN and a basic static load rating of 16kN. Although this bearing is wider than the standard 6306, its load capacity should be assessed using these ratings rather than width alone.

The 2RS1 suffix identifies rubber contact seals on both sides, helping retain factory-applied grease and prevent contaminants from reaching the rolling elements. The C3 suffix is particularly significant: it specifies greater-than-normal radial internal clearance before mounting, allowing for reductions caused by interference fits and operating temperature differences. C3 is not a general upgrade for every installation, so the original equipment's clearance requirements must be checked. SKF specifications list a limiting speed of 6,300rpm, with actual operating suitability dependent on load, temperature, lubrication and seal friction. The bearing uses a sheet steel cage and weighs approximately 0.49kg. For replacement work, verify the full designation, particularly the 27mm width and C3 clearance, rather than relying solely on the 30mm bore.

Typical Applications:

Industrial electric motor shaft assemblies requiring C3 clearance

Agricultural machinery and enclosed mechanical drives

Conveyor drive shafts with 27mm-wide bearing seats

Industrial pump and rotating equipment assemblies

Power transmission systems with interference-fitted bearings