Berg Hydromechanical Clamping Unit – HYDRODOCK


Generally used as the clamping system for the machine tool interfacing

Hydrodock clamping system – Application

The Hydrodock clamping system is generally in use as the clamping system for the machine tool interfacing with changing processing units. For example, these include milling heads and attachment spindles.

Once the processing unit has been positioned on the machine, the clamping force is built up at the adapter ring by the segments being drawn in.

The absolute self-locking feature of the Hydrodock clamping system also guarantees a high mechanical stability of the interface in connection with maximum safety. Therefore, no permanent pressure requirement following the clamping process.

Design features

A hydromechanical, force intensifying and self-locking clamping unit pulls in the draw-bolt and thus the collet. During this process, it is possible to achieve a very high energy density in a minimum amount of space. This is because of the integrating force by the intensifying gear. The collet engages in the adapter ring and draws it in until the processing unit makes contact and the clamping force has been built up. The unclamping pressure displaces the clamping dog forward and thus safely releases both the self-locking and the clamping action due to the changing surface situation.


Fs kN Clamping force
p bar Clamping/Unclamping pressure
ht mm Total stroke
hs mm Clamping stroke
SS Clamping position
LS Unclamping position

Ordering example

Hydrodock 20


Adapter ring, adapter ring with spring-mounted lock and also clamping force measuring device

Dimensions | Technical data

 Hydrodock clamping system

 Hydrodock clamping system

Also CLICK HERE TO DOWNLOAD Berg Hydromechanical clamping unit TECHNICAL DATA

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