Deep Groove Ball Bearings SKF 6006 /C3

The SKF 6006/C3 single-row deep groove ball bearing features a 30 mm bore, a 55 mm outer diameter and increased bearing clearance for operating conditions subject to thermal stress.

As an open radial ball bearing, the 6006/C3 is one of the most versatile components in mechanical engineering. SKF manufactures this model in the Explorer version from standard 100Cr6 rolling bearing steel with a sheet steel cage. Due to its design, the bearing primarily absorbs radial forces and supports axial loads acting in both directions. As the bearing remains unsealed, it is primarily suitable for installations with an external lubrication system.

What is the 6006/C3 deep groove ball bearing suitable for in operation?

Design engineers prefer to use this rolling bearing in rotating bearing arrangements where external oil lubrication or regular relubrication is provided. The open design without sealing washers reduces rotational resistance and supports high circumferential speeds. Thanks to its P6 tolerance class (equivalent to ABEC 3), the bearing operates with increased concentricity. This promotes smooth running in dynamic applications and reduces unwanted vibrations in the drivetrain.

When is the increased bearing clearance C3 required in the design?

The C3 designation indicates a slightly increased radial bearing clearance as supplied. This variant is recommended if the shaft is expected to heat up relative to the housing during operation. Thermal expansion reduces the internal clearance during operation, ensuring that the bearing does not become stressed. Even with tight fits on the shaft and housing, the C3 bearing clearance helps to ensure that sufficient operating clearance remains after press-fitting to allow for smooth running.