MECHANICAL WEDGE ACTION TENSILE GRIPS
For Tensile Testing on a Wide Range of Materials and Specimen Types
The manual wedge action grip is designed for easy specimen loading, alignment, and positioning. After initial specimen contact, gripping force increases as the testing load increases. Virtually no preload is seen during specimen clamping due to the design of the moving grip bodies, making them particularly suitable for testing high strength materials, such as metals and composites, ensuring that specimen slippage is eliminated.
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1 kN - 150 kN Force Capacities
Low-Force Grips
1 kN - 50 kN Force Capacities
The low-force 2716 Series wedge grips are ideal for static tensile testing on a wide range of materials including plastics, elastomers, and metals.
View Specifications View Jaw Faces
High-Force Grips
100 kN and 150 kN Force Capacities
The high-force range of 2716 Series wedge grips are ideal for static tensile testing on metal and composite material.
View Specifications View Jaw Faces
Principle of Operation
The wedge action principle of these grips allows them to be tightened onto a specimen without altering the vertical position of the faces in relation to the specimen. This is accomplished by a design, which moves the grip body to close the faces. This feature makes it possible to pre-select the exact point at which the specimen will be held with consistent gauge length and no compressive force applied which may cause specimen buckling.
A strong clamping force can be applied to materials that are difficult to hold through a high mechanical advantage achieved by the tightening mechanism. The grip faces are spring loaded against a shoe which is in a fixed position in respect to the testing frame holding mechanism, only a light initial gripping force needs to be applied to the specimen. As the grip is tightened, it's frame is drawn up and the inclined sides push against the matching side of the faces which move laterally against the specimen. A shoe incorporated to the driving shaft prevents the faces from moving.
The open front design of the grip frames allows faces to be easily interchanged as well as easy specimen loading. Because the faces are held in fixed position, there is no recoil, or loosening, when the specimen ruptures and if an extensometer is attached, it will remain in place.
Features
- Quick set-up with rapid clamping and unclamping action
- Easy specimen loading for increased productivity
- Self-tightening wedge design eliminates slippage
- Fixed faces and moving body during specimen loading
- Variety of jaw face sizes and surfaces available
- Quickly change faces without tools
- Options for testing conditions up to 350°C (660°F)
Application Range
- Type of loading: tensile, static and tension cyclic tests
- Not suitable for high cycle fatigue tests
- Specimen materials: wires, plastics, metals, elastomers, and composites
- Specimen shapes: flat or round specimen with or without shoulder tab ends
| Available Models | ||
|---|---|---|
| Force Capacity | Maximum Specimen Width | Catalog no. |
| 1 kN | 19 mm | 2716-016 |
| 2 kN | 19 mm | 2716-017 |
| 5 kN | 25 mm | 2716-010 |
| 30 kN | 25 mm | 2716-015 |
| 30 kN [High Temperature] | 25 mm | 2736-015 |
| 50 kN | 25 mm | 2716-020 |
| 100 kN | 25 mm | 2716-002 |
| 100 kN | 50 mm | 2716-003 |
| 100 kN [High Temperature] | 25 mm | 2736-004 |
| 100 kN [High Temperature] | 50 mm | 2736-005 |
| 150 kN | 50 mm | 2716-008 |
OTHER MODELS
For High Force Testing
Precision Mechanical Wedge Grips
100 kN and 250 kN Force Capacities
Catalog nos. 2716-028 and 2716-030
Tensile grips for composites and metal that provides accurate and repeatable specimen alignment capable of meeting the alignment requirements of Nadcap AC7122-1 and AC7101.
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High Capacity Wedge Action Tensile Grips
300 kN Force Capacity
Catalog no. CP130950
Manual wedge grips are designed to provide a high-capacity gripping solution without the need for pneumatic or hydraulic actuation.
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