Deep Groove Ball Bearings FAG 6228 -C3

The FAG 6228-C3 deep-groove ball bearing, measuring 140 × 250 × 42 mm and featuring increased bearing clearance, offers defined running characteristics for industrial applications subject to thermal stress.

The single-row deep groove ball bearing 6228 -C3 from FAG is an open radial ball bearing for heavy-duty shaft support in mechanical and plant engineering. It primarily accommodates radial loads and guides the shaft in both axial directions. The rings and rolling elements are made from standard rolling-bearing steel (100Cr6). The design, which has no flange or groove on the outer ring, allows for direct installation in cylindrical housing bores.

What application requirements does the 6228-C3 deep groove ball bearing meet?

Large shaft diameters of 140 mm are typically used in heavy-duty shaft mountings subject to combined loads. As this bearing complies with the standard tolerance P0/PN (equivalent to ABEC 1), it fits into conventional machine frames with standard fits. The open design is ideal for applications where the bearing is lubricated directly via an existing oil bath or a centralised lubrication system. A guided sheet steel cage maintains an even spacing between the balls.

What are the characteristics of the design with C3 bearing clearance?

The suffix C3 indicates a slightly increased radial clearance compared to standard clearance. This design is recommended when temperature differences occur between the inner and outer rings during operation. Heat causes the inner ring to expand more, which could lead to stress with standard clearance. With C3 bearing clearance, the necessary operating clearance is maintained. Furthermore, the bearing covers a wide operating temperature range from -30 to +200 degrees, provided a suitable lubricant is used.