Cylindrical clamping bush for clamping mandrel for clamping e.g. flat rod, has chamber wall including extension of wall length by bulges and/or indentations over extension or circumference so that lengthening and/or bending zone is formed

摘要

The bush (1) has a clamping chamber (2) closed on all sides, and fillable with hydraulic medium. The clamping chamber is formed by an inner, non-deformable, cylindrical core part (3), an elastically deformable chamber wall (4), and rigid front walls. The chamber wall is deformable under pressurization. The elastically deformable chamber wall includes an extension of a wall length by mushroom-like bulges and/or indentations (7) over a longitudinal extension or a circumference so that a zone of elastic lengthening and/or bending is formed.