Deep Groove Ball Bearings SKF 6028 /C3

The SKF 6028 /C3 deep groove ball bearing is an open, single-row radial ball bearing with a 140 mm bore and increased C3 clearance for industrial applications subject to thermal stress.

The 6028 /C3 deep groove ball bearing is manufactured by SKF and is designed to accommodate predominantly radial and moderate axial loads. Manufactured from standard rolling-element bearing steel (100Cr6) with a robust sheet steel cage, this single-row bearing has an inner diameter of 140 mm, an outer diameter of 210 mm and a width of 33 mm. The design complies with tolerance class P0 or ABEC 1, with no flange or groove on the outer ring. Thanks to its open design, the component can be flexibly integrated into existing lubrication systems and is suitable for operating temperatures ranging from -20 to +150 degrees.

What is the 6028/C3 deep-groove ball bearing suitable for?

This deep-groove ball bearing is primarily used in industrial machinery and plant where shafts with a diameter of 140 mm are supported. The open design, without integrated seals, is intended for applications with external oil lubrication or separate grease chambers. The single-row geometry accommodates radial forces as well as axial forces in both directions. Furthermore, the open design allows for direct relubrication whilst the machine is in operation.

What are the advantages of the increased C3 clearance in the 6028/C3?

The designation C3 indicates a slightly increased radial clearance compared with the standard version. This increased clearance compensates for fit allowances when fitting the inner ring, as well as thermal expansion at operating temperatures up to +150 degrees. This helps to prevent the rolling elements from becoming stressed when temperature differences occur between the inner and outer rings during operation. For applications involving thermal stress or tight fits, this design is preferable to bearings with standard bearing clearance.