MECHANICAL WEDGE ACTION TENSILE GRIPS

For Tensile Testing on a Wide Range of Materials and Specimen Types

2716-020 Manual Wedge Action Grips

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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AVAILABLE MODELS
1 kN - 150 kN Force Capacities




2716-01x, 2716-02x and 2736-01x Series Manual Wedge Action Grips



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.


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2716-00x and 2736-00x Series Manual Wedge Action Grips



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 Max 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 Manual Wedge Grip



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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2710-004 Screw Side Action Grips



High Capacity Wedge Action Tensile Grips
250 kN Force Capacity
Catalog no. CP125378.

Manual wedge grips are designed to provide a high-capacity gripping solution without the need for pneumatic or hydraulic actuation.


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