Hydraulic Power Pack GripControl

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.
  • All power packs feature a high degree of safety, including Emergency STOP chain and inching mode. 
  • Space-saving design enables the power pack to fit under the table. Extremely high availability, maintenance-friendly design, and long service life are stand-out features of these power packs.

Significant Advantages and Features

Perfect, Gentle Clamping

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

  • Various operating modes can be selected such as optional continuous gripping, re-tightening in the event of a pressure drop, or wedge gripping with a pressure proportional to the current test load.
  • Operation is possible even at very low pressures.
  • Specimen grip closing speed optionally adjustable via testXpert III.
  • Zwick's automatic force zero control reliably protects the specimen from unwanted tensile or compression forces due to material flow or grip deformation during the closing and gripping process.

Safety

Operator safety is guaranteed at all times, for example by integration into the Emergency STOP circuit and inching mode.

EtherCAT Interface

The hydraulic power pack is directly connected to the testControl machine electronics. This offers several advantages during the specimen insertion process and the test. The power pack is linked to testControl II via the EtherCAT interface, which is compatible with future generations, leaving the interface modules of the machine electronics available.

Ergonomic Control

All power pack functions can be controlled conveniently and ergonomically via the testing software or the machine remote control. This offers numerous advantages during the gripping process and the test.

Intelligent Changeover

Changing between different tests is a breeze thanks to testXpert III's System Configuration Builder. This includes automatic test-specific storage of test parameters and the test environment.

GripControl for Short Clamping Lengths

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

Technical Overview

GripControl

Description

Value

For hydraulic grips/test tools

Fmax 100/250 kN, type 8594 (250 kN)

Type

GripControl

Item no.

087280

Height

587

mm

Width

502

mm

Depth

817

mm

Weight with oil, approx.

90

kg

Operating pressure

30 to 460[1]

bar

Flow rate

3.6

l/min

Connected loads:

Power consumption

1600

VA

Frequency

50

Hz

Voltage (3Ph, N, PE)

400

V

Required for this

Connecting hoses

Yes

Machine remote control

only 087280

  1. Refers to the power pack only. It is possible that a lower maximum pressure (see maximum specimen grip pressure) results in conjunction with one specimen grip.

GripControl for short clamping length grips

Description

Value

For hydraulic grips/test tools

Fmax 100/250 kN, type 8594 (250 kN)

Type

GripControl for short clamping length grips

Item no.

087283

Height

584

mm

Width

502

mm

Depth

817

mm

Weight with oil, approx.

90

kg

Operating pressure

40 to 460[1]

bar

Flow rate

3.6

l/min

Average noise level

70

dB(A)

Safety

Emergency Stop chain, CE conformity

Connected loads:

Power consumption

1600

VA

Frequency

50

Hz

Voltage (3Ph, N, PE)

400

V

Required for this

Connecting hoses

Yes

Machine remote control

Yes

  1. Refers to the power pack only. It is possible that a lower maximum pressure (see maximum specimen grip pressure) results in conjunction with one specimen grip.

Universal power-pack

Item No.

053797

Height

772

mm

Width

620

mm

Depth

620

mm

Weight with oil, approx.

150

kg

Operating pressure

50 to 460[1]

bar

Flow rate

0 to 9.8 (can be adjusted)

l/min

Noise level

64 (max. 70 with ventilator)

dB(A)

Safety

Emergency Stop chain, CE conformity

"Force constant hold" (maintains constant force)

  • Prevents impermissible loading of the specimen during the close and gripping procedure

Operation modes

  • One-time pre-determined gripping pressure set
  • Regulation at decrease in pressure
  • Continuous gripping at pre-determined gripping pressure
  • Gripping pressure proportional to the current test load (proportionality factor freely selectable)

Required for this

  • CAN Bus measurement module[2]
  • Expanded remote control
  • Hose connection
  1. Refers to the power pack only. It is possible that a lower maximum pressure (see maximum specimen grip pressure) results in conjunction with one specimen grip.
  1. If a CAN Bus already exists because of an automated extensometer, no additional CAN Bus is needed..

Additional Benefits of GripControl Stand Alone

  • The stand-alone power pack is controlled directly by its own remote control 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. Two different pumps ensure rapid closing and high pressures. Smooth, fully automatic switching.
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