Deep Groove Ball Bearings SKF 6205 /C3

The SKF 6205/C3 deep groove ball bearing is an open rolling bearing with a 25 mm bore and increased C3 clearance, designed for industrial applications subject to thermal stress.

The SKF 6205/C3 deep groove ball bearing is a single-row radial ball bearing in the Explorer performance class. With key dimensions of a 25 mm bore, 52 mm outer diameter and 15 mm width, this rolling bearing primarily withstands radial forces, but also handles axial loads in both directions. The component is made of case-hardened roller bearing steel (100Cr6) and houses the rolling elements in a sturdy sheet steel cage. As it is an open bearing without integrated sealing washers, lubricant reaches the raceways unimpeded.

What is the 6205/C3 deep-groove ball bearing suitable for in operation?

This design is primarily used on rotating shafts where elevated operating temperatures occur. The open design requires a lubricated environment with external housing seals. With a permissible temperature range of -20 to +150 degrees, this design is suitable for industrial applications involving continuous heat generation. The bearing accommodates both radial and axial loads and allows for high operating speeds without the need for abiding seals.

What do C3 bearing clearance and P6/P5 tolerances mean for this bearing?

The /C3 designation indicates increased radial bearing clearance. This additional clearance between the balls and raceways helps to compensate for seizing if the inner and outer rings heat up unevenly during operation or if tight press fits reduce the radial clearance. SKF also manufactures this model to a higher precision: dimensional accuracy complies with tolerance class P6, whilst running accuracy to P5 specifies tighter concentricity tolerances. Before assembly, the shaft and housing seats should be matched to these accuracy requirements.