BERG HSK Gripper HSH

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Application

For HSC workpiece machining the clamping forces according to DIN 69893 are frequently no longer sufficient. The idea to create an extremely rigid connection between the tool and spindle by placing the clamping element directly against the internal spindle contour, reached its designed limits, due to the cross sections and surfaces available for the force transmission. With their newly developed HSH gripper, BERG-Spanntechnik have met the requirements for clamping forces notably exceeding the values specified in DIN 69893. HSH grippers are intended for the clamping of hollow shank tooling with central cooling lubricant supply.

Design features

HSH(L) grippers consist of four sturdy clamping claws, held by means of an annular spring, execute a tilting movement when the hollow shank tooling is changed and removed. During clamping, the centrally arranged draw-bolt transfers the actuation force onto the clamping segments, where it acts as a direct clamping force without further force deviation. The generously dimensioned face of the draw-bolt has been provided for tool ejection. The constructive design of the clamping element offers a large clamping reserve. The internal spindle contour is easy to manufacture.

Note:
The connection parts must be designed such, that when in release position, the back stop is reached either in the hydraulic cylinder or by means of spring force in the spindle. When clamped without a tool, the collet is supported in depth 'm' by the spindle shoulder.

Data Sheet

PDF data sheet: BERG HSK Gripper HSH (291-HSH)

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