Grips & Jaws for Universal Testing Machines
Precision, Versatility and Secure Sample Clamping
Choosing the right clamping fixture is essential for reliable and standards-compliant material testing. Hess GmbH offers a wide range of high-quality grips and jaws – perfectly matched to your testing requirements, materials, and machines.
Product Overview
Our grips cover all areas of material testing – from simple tensile tests to complex special applications:
🔹 Wedge Grips
• Self-tightening with increasing force
• Ideal for flat and round specimens
• Fast specimen change, easy handling
🔹 Pneumatic Grips
• Uniform clamping force via compressed air
• Especially suitable for delicate or thin specimens
• Optional foot switch for ergonomic operation
🔹 Hydraulic Grips
• High clamping forces for demanding applications
• Suitable for large cross-sections or high-strength materials
• Constant clamping even during long-term tests
🔹 Screw Grips
• Universally applicable for various materials and specimen shapes
• Precise manual adjustment of clamping force
• Robust, low maintenance, ideal for single tests and small series
🔹 Scissor Grips
• Friction-based clamping using scissor-like mechanism
• Especially suitable for flat specimens or films
• Compact, lightweight, and easy to use
🔹 Roller Grips
• Slip-free clamping by wrapping the specimen
• Ideal for soft, stretchable, or sensitive materials
• Especially suitable for textiles, films, elastomers
🔹 Rope Grips
• Specifically designed for testing wires and cables
• Even force application without damaging the specimen
• Suitable for standard-compliant tensile tests on ropes (DIN/ISO)
Jaws for Different Materials
Selecting the right jaw inserts ensures secure specimen clamping without damage:
- Rubber-faced jaws for sensitive specimens
- Pyramid, diamond, and V-shaped jaws for a variety of geometries and high gripping force
- Special jaws for fibers, foils, wires, ropes, or textile materials
Compatibility & Flexibility
Our clamping systems are compatible with:
- All Hess universal testing machine series (e.g., TM, TMCI, TMNI ST)
- Upgraded systems with Electronic Drive Controllers
- Custom and special-purpose testing machines
Our grips can be combined flexibly and adapted to existing test stands using adapter solutions.
Consulting & Custom Solutions
Not sure which grip system suits your application best?
Our experienced team will assist you in selecting the right solution and also offers custom-designed fixtures tailored to your testing setup and applicable standards.
Your Advantages at a Glance
- Wide selection of grips for all testing applications
- Robust, long-lasting construction – Made in Germany
- Standard-compliant clamping for accurate results
- Compatible with a variety of machines and systems
- Technical consulting and customized solutions available
Discover the right grips for your needs – we’ll be happy to advise you!
📞 Contact us for expert consultation or a custom quote.
