Wedge grip for tensile testing
Zwick

Wedge grips consist of a solid body with interchangeable jaw inserts or fixed jaws, as well as an operating unit for opening and closing the grip.

wedge grips are ideally suited to specimens prone to shrinkage, as they automatically re-tighten, compensating for decreasing specimen thickness
wedge grips close symmetrically, automatically positioning the specimen in the tensile axis and eliminating the need for thickness adjustment
large clamping length and good jaw guiding properties allow contact pressure on the specimen to be kept low
high temperature resistance and low overall height make them ideal for use in temperature chambers