For Static and Dynamic Testing of Metals and Composites

Advanced Hydraulic Wedge Action Grips

Advanced Hydraulic Wedge Action Grips are a versatile grip that can be used in both static and dynamic materials testing applications – up to 500 kN force capacity for dynamic tests, and up to 600 kN for static tests. Ideal for metals and composites testing, the interchangeable grip jaw faces accommodate both flat and round specimens and the grip design maintains a constant gripping force on the test specimen, regardless of the applied test forces. This controlled gripping force is applied by the grips as long as there is an adequate hydraulic pressure supply that is active and connected.

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Principle of Operation

Each grip functions independently of the other, an external hydraulic supply providing pressure to both open and close the grips. When gripping pressure is applied, the relative vertical position of the specimen/jaw faces remains unchanged to prevent specimen load generation during the gripping process. Once the grip faces contact the specimen the hydraulic pressure produces a vertical force on the grip head. The grip force will remain constant as the design automatically compensates for specimen thickness changes.

Application Range

  • Type of loading: static or dynamic, reverse stress.
  • Specimen material: metals, composites, plastics
  • Specimen geometries: round and flat section using appropriate optional jaw faces

Catalog no. 2743-401

Catalog no. 2742-501

Catalog no. Static Load Capacity Dynamic Load Capacity Temperature Range  
2742-301 ±30 kN ±30 kN 4° C to 65° C Learn More
2743-401 ±130 kN ±100 kN 4° C to 65° C Learn More
2742-501 ±312 kN ±250 kN 4° C to 65° C Learn More
2742-601 ±600 kN ±500 kN 4° C to 65° C Learn More

For More Repeatable Results

Add a specimen alignment device (catalog no. CP135054) to ensure consistent alignment of your test specimens. This device is compatible with the 2743-401, 2742-501, and 2742-601 versions of our advanced hydraulic wedge grips.

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