Common Features of the Pneumatic Grips

Pneumatic grips are particularly useful when a variety of materials must be held, especially clamping-sensitive materials. The gripping force is generated by pneumatic cylinders acting directly on the jaws or via a lever system.

• Separation of tensile and closing forces ensures constant gripping force throughout the test sequence
• The contact force on the specimen is reproducible
• Zwick’s force stabilization system protects the specimen from undesirable forces during the clamping process
• Clamping-sensitive specimens can be held securely by adjusting the pneumatic pressure, avoiding jaw breaks
• Tensile load application can be static or pulsating. Depending on the type of grips, compression and alternating load tests are also possible
• The larger grips can remain in place while small load cells, specimen grips, test tools and test devices are attached to them – a great time-saver