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Hydro-Mechanical Swing-Clamp Unit


Area of application

Hydraulic swing-clamp units are designed for mediumsized and large presses exerting a force of about 500 tons upwards. Basically, they are suitable only for top die clamping.

Rigidly mounted on the press ram ledge, they require dies that have clamping edges with U-cut outs.

Mode of operation

The tie rod is swung into the clamping position via a mechanical register slot. After this swing movement (standard swing angle 20°), a double acting hydraulic cylinder transmits its clamping force, via the tie rod, to the die.

In the release process, the tie rod is released by an axial movement, and then swings back into the release position.

Movement sequence for applying the clamping force:

Distinguishing features

The hydraulically operated clamping cylinder directly produces the necessary clamping force. In so doing, the hydraulic pressure must be maintained throughout the clamping process (optional equipment with non-return valves and pressure switches recommended).

Electrical control of the following functions (switches):

Technical data

Switch: 1 inductive proximity switch; p-n-p normally open contact
Supply voltage: 10-30 V DC
Cable length: ca. 3 m

Max operating temperature 70°C



  • Fully automatic, and also purely hydraulic operation
  • Large clamping thickness tolerance
  • Compact dimensions
  • High safety standard due to electrical monitoring
  • Central control
  • Superior corrosion protection
  • Continuous pressure control possible


The clamp unit has a nickel-plated swing housing and a forged and gunmetal-finish tie rod.

The swing angle of the tie rod can be adjusted between 10° and 30°, in 5° increments as required by the customer.

To fix the clamp unit to the machine, please use four M12 bolts of strength class 8.8 according to DIN 912 (not included).

Dimensional diagrams

Technical specs