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Gentle clamping with GripControl hydraulic power-packs

  • GripControl hydraulic power-packs are tailor-made for Zwick hydraulic grips and tools/fixtures up to 250 kN.
  • Operator safety is guaranteed at all times, for example by integration into the Emergency STOP circuit.
  • Zwick's 'Force Constant Hold' automatic force stabilization system reliably protects the specimen from unwanted tensile or compression forces due to material flow or grip deformation during the closing and clamping process
  • Extremely high availability and long service life are stand-out features of these hydraulic power-packs.

Z100THW AllroundLine with Type 8802 hydraulic grips, Fmax 100kN and standard hydraulic power-pack

GripControl

Operating modes and functions

  • one-off generation of set gripping-pressure
  • re-tightening in event of pressure fall
  • continuous gripping at pre-determined gripping pressure
  • wedge gripping: gripping pressure proportional to the current test load (proportionality factor freely selectable)
  • grip closing-speed optionally adjustable via testXpert II
  • automatic zero-force control
  • space-saving design enables power pack to fit under table.
Gentle clamping with GripControl

Perfect, gentle clamping
Specimens are always gripped and held perfectly, regardless of the properties of the specimen material.

EtherCAT® interface

EtherCAT® interface
The power pack is linked to testControl II via the future-proof EtherCAT® interface, leaving the interface modules of the machine electronics free.

testControl II remote control unit and testXpert II

All power-pack functions can be controlled conveniently and ergonomically via the testXpert II testing software or the machine remote control. This has many advantages during the clamping process and the test.

Test environment concept

Intelligent changeover
Changing between different tests is child's play thanks to testXpert II's intelligent test environment concept. This includes automatic test-specific storage of test parameters and test environment.

specimens with short clamping-lengths

GripControl for short clamping length grips
The perfect synergy between short-clamping-length grips and GripControl allows optimum gripping of even the smallest, most sensitive specimen.


Gripcontrol stand-alone option

Gripcontrol stand-alone

The stand-alone power pack is controlled directly via its own remote control unit, with no connection to the testControl electronics. The remote control features the following functions:

  • grips can be opened or closed individually
  • pressure can be set very simply via a dial control
  • re-tightening function can also be activated via the remote control
  • short cycle-times, easy to operate: provision of two different pumps ensures rapid closing and high pressures; smooth, fully automatic switching.

Universal hydraulic power-pack

Universal hydraulic power pack

  • The universal power-pack enables optimum matching of the specimen grips to the test situation (system specimen grips, application and type of test). This is made possible by adjustable flow-rate and adjustable operating pressure from 30 bar
  • The power pack is controlled via thetestXpert II testing software and the remote control unit of the testControl electronics and is connected directly to the testControl electronics. This offers numerous advantages during the clamping process and the test.

Four modes of operation available:

  • one-off generation of set gripping-pressure
  • re-tightening in event of pressure fall
  • continuous gripping at pre-determined gripping pressure
  • wedge gripping: gripping pressure proportional to the current test load (proportionality factor freely selectable)

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