SMW Autoblok’s SJL six-jaw (2+2+2) equalizing and self-centering power chuck is designed to provide high accuracy with thin-walled and deformation-sensitive workpieces. The SJL can be switched from a 2+2+2 lever equalizing chuck to a classic six-jaw self-centering chuck depending on application requirements.

Utilizing the 2+2+2 lever balance capability provides high concentricity and axial runout accuracies by ensuring that the grip force of each jaw set equalizes as pairs and is in contact with the workpiece continuously. This minimizes any deformations or inaccuracies of raw materials.

The six-jaw self-centering option provides a concentric clamp locking plate for all sequential six jaws, enabling the chuck to hold round, machined diameters and thin-walled workpieces that require equal wall thicknesses. Specifically designed with centrifugal force compensation, this feature provides constant gripping force at higher speeds and feeds, vastly reducing production time, the company says.

The SJL is Proofline-sealed and protected from contamination while providing consistent lubrication for long maintenance intervals. This advanced power chuck accepts either tongue-and-groove or metric serrated top jaws and is available in sizes ranging from 225 to 400 mm.