ADVANCED HYDRAULIC WEDGE ACTION GRIPS

For Static and Dynamic Testing of Metals and Composites

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.

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

Parameter Name	Parameter Value
Operation	hydraulic
Type	parallel
Number of jaws	2-jaw