Deep Groove Ball Bearings SKF 6330 M/C3

The SKF 6330 M/C3 deep groove ball bearing, measuring 150x320x65 mm, with a brass cage and C3 clearance, offers reliable running characteristics under thermal loads.

The 6330 M/C3 deep groove ball bearing is a single-row radial ball bearing from SKF for heavy-duty machinery applications. With a bore of 150 mm, an outside diameter of 320 mm and a width of 65 mm, this rolling bearing primarily accommodates radial loads. The bearing is made from standard rolling-element bearing steel (100Cr6) and operates within a temperature range of -20 to +150 degrees. Thanks to its open design without sealing rings, this bearing is suitable for applications where direct oil lubrication or circulation is provided.

What is the 6330 M/C3 deep-groove ball bearing suitable for in industrial applications?

This bearing is suitable for robust bearing arrangements subject to high radial forces and a continuous supply of lubricant. Thanks to its open design without an integrated seal, the bearing can be fitted directly into lubricated housings in which lubricants circulate unimpeded. The solid outer ring, without a flange or ring groove, allows for direct installation in cylindrical housing bores to tolerance class P0/PN or ABEC 1. Designers often use this design where axial guiding forces occur alongside predominant radial loads.

What are the advantages of the brass cage and the C3 bearing clearance in the 6330 M/C3?

The integrated brass cage is characterised by high mechanical strength and withstands severe vibrations or shock loads. In conjunction with the slightly increased radial clearance (C3), the bearing compensates for operational thermal expansion of the shafts and rings. This reduces the risk of internal stress within the bearing should temperature differences arise between the inner and outer rings. During design, it is important to ensure that the environmental seal is mounted separately within the housing to prevent contaminants from entering the open raceways.