Deep Groove Ball Bearings SKF 6228 /C3

The SKF 6228 /C3 deep groove ball bearing, with a 140 mm bore and C3 clearance, offers reliable running characteristics for highly loaded bearing arrangements.

The SKF 6228/C3 deep groove ball bearing is a single-row radial ball bearing for industrial applications. With a bore of 140 mm, an outer diameter of 250 mm and a width of 42 mm, the bearing primarily accommodates radial forces. The inner and outer rings, as well as the rolling elements, are made of standard bearing steel 100Cr6. A sheet steel cage guides the balls evenly into the deep raceways.

What is the 6228 /C3 deep-groove ball bearing suitable for in operation?

Design engineers primarily use this size for bearing arrangements subjected to predominantly radial forces in general mechanical and plant engineering. The open bearing design allows for lubrication via an existing oil circuit or targeted grease relubrication. As there are no integrated sealing washers to affect concentricity, the rolling bearing operates with low friction. The permissible temperature range extends from –20 to +150 degrees Celsius, enabling use under standard thermal conditions.

What distinguishes the C3 bearing clearance in this SKF bearing?

The C3 designation indicates a slightly increased radial clearance compared with the standard version. This additional clearance compensates for heat-induced expansion of the bearing rings during operation. It also helps to prevent excessive preload when fits on the shaft or housing cause the inner ring to expand. The bearing complies with tolerance class P0/PN or ABEC 1 and has an outer ring without a flange or groove.