Mechanical specimen grips

Gripping, clamping, holding - from rough to fragile

Hegewald & Peschke offers a wide range of mechanical grips for tensile tests. This includes both from-fit and force-fit grips, each of which can be used for a wide range of materials, specimen shapes and temperature ranges.

Force-fit grips:

Vice grips	Pincer grips	Wedge type grip	Screw type wedge action grips

External tensioning	Self-tensioning	Self-tensioning	External tensioning
+ Symmetrical and asymmetrical clamping	- Only symmetrical clamping possible	- Only symmetrical clamping possible	+ Symmetrical and asymmetrical clamping
+ Light	+ Light	- Heavy	- Heavy
+ Adjustable clamping force	- Clamping and pre-clamping force cannot be adjusted	- Clamping and pre-clamping force cannot be adjusted	+ Adjustable clamping force (Reproduceable clamping forces can be reached with a torque wrench)
- For small forces		+ Up to high forces	+ Up to high forces
- It is difficult to reach reproducable clamping forces		- Spring back after brittle fracture	+ Frictional fixation after fracture
- Clamping force decreases during testing	• Clamping force increases during testing	• Clamping force increases during testing	• Clamping force increases during testing
- For polymers (thermoplastic, duroplastic), foils, food,... - Up to 20 kN	- For elastomers, plastics, textiles - Up to 20 kN	- For metals - Up to 600 kN	- For metals - Up to 250 kN