Deep Groove Ball Bearings SKF 6008 -Z/C3

The SKF 6008 -Z/C3 deep groove ball bearing features compact dimensions of 40x68x15 mm, increased C3 clearance and protection against coarse dirt thanks to a single-sided sheet metal cover.

The SKF 6008 -Z/C3 deep groove ball bearing is a single-row radial ball bearing in the Explorer design for demanding operating conditions. Manufactured from 100Cr6 rolling-element bearing steel, the component accommodates radial and moderate axial forces in both directions. Thanks to its standardised dimensions – a 40 mm bore, 68 mm outer diameter and 15 mm width – the bearing can be fitted into housing bores. A robust sheet steel cage guides the rolling elements evenly into the deep raceways. The bearing is designed for operating temperatures ranging from –20 to +150 degrees Celsius.

What is the 6008 -Z/C3 deep-groove ball bearing suitable for in operation?

This single-row deep-groove ball bearing is suitable for rotating shafts in industrial applications subject to combined radial and axial loads under thermal stress. Design engineers use this design where heat is generated during operation or where tight fits reduce the bearing clearance. The open side allows lubricant to be supplied via the interior of the housing, whilst the opposing Z-cover plate protects against coarse foreign particles. Thanks to tolerance class P6, this design ensures low-vibration and dimensionally accurate operation.

What are the advantages of C3 bearing clearance and the Z-cover plate?

The C3 designation indicates a slightly increased radial bearing clearance compared with the standard version. It compensates for thermal expansion caused by temperature differences between the inner and outer rings and prevents the rolling elements from seizing. The single-sided Z sheet metal cover shields against coarse dirt particles without coming into contact with them, and without generating additional frictional heat. During assembly, users adjust the bearing seat and lubricant supply to the open side of the bearing in order to establish a load-bearing lubricating film across the entire temperature range.