Wedge Action Grips

Wedge action grips induce a wedging action as the jaw inserts slide relative to angled interior walls of the grip ‘chamber’ or grip body. As the jaws close, the clamp force to the test specimen increases both during test sample installation and the test loading.

Mechanical wedge action grips are more popular than power assisted pneumatic or hydraulic action grips because they are generally more compact, more affordable, and simpler to use. Power assist is very beneficial in higher force testing applications.

Mechanical wedge action grip feature either stationary grip bodies or stationary jaw inserts. Stationary grip bodies are coupled to the test machine and remain fixed. The jaws move during opening and closing and sample insertion. Wedge grips with stationary jaw inserts reduce or eliminate undesirable axial compressive loads that can cause sample damage as they are tightened. Stationary jaws clamp the sample without requiring axial movement. With some stationary jaw grips, handles turn a collar that moves the grip body. The jaw inserts couple directly to the test frame. Note that achieving the same goals is possible using adjustable jaws (fixed grip), with a more inconvenient sample loading procedure.

Wedge angle is typically small (e.g. 10-15 degrees) which limits the range of opening or sample thickness range with a jaw inserts. Multiple jaw inserts are then needed to cover multiple sample thicknesses.

All wedge action grips perform tensile tests. In fatigue testing applications, selected grips can perform tension-tension fatigue tests. Hydraulic action wedge grips can perform tension-compression, through zero loading, or compression-compression tests because of their design. The wisest path to selecting the best grip for your applications is to contact our applications engineer who will help you select or design a solution for you.

Wedge Action Grips

Mechanical Wedge Grips Pneumatic Wedge Action Grips Hydraulic Wedge Action Grips
 
18 results - showing 1 - 10 1 2
Ordering 
Details
Mechanical Wedge Grip - G109
Mechanical Wedge Grip - G109
Wedge Action Grips » Mechanical Wedge Grips

Specification

Force
6 models from 22500 lb (100 kN) to 112,500 lb (500 kN)
Grip Type
Fixed or stationary grip body while jaws move vertically and laterally

Accessories

Thickness
Flat samples to 2 in (50 mm); Round samples to 1.75 in (44 mm) diameter
Tensile Mechanical Wedge Grip - G140W
Tensile Mechanical Wedge Grip - G140W
Wedge Action Grips » Mechanical Wedge Grips

Specification

Force
3 models from 90000 lb (400 kN) to 135000 lb (600 kN)

Accessories

Thickness
1.97 in (50 mm)
Motorized Wedge Grip - G185
Motorized Wedge Grip - G185
Wedge Action Grips » Mechanical Wedge Grips

Specification

Force
22500 lb (100 kN)
Grip Type
Jaws held in stationary (vertically) sample position while grip body moves adjustment.

Accessories

Thickness
0.63 in (16 mm)
Mechanical Wedge Grip - G204
Mechanical Wedge Grip - G204
Wedge Action Grips » Mechanical Wedge Grips

Specification

Force
Two different models - both rated 11250 lb (50 kN)
Grip Type
Fixed or stationary grip body while jaws move vertically and laterally

Accessories

Thickness
1.57 in (40 mm) or 2.36 in(60 mm)
Wedge Grip for High Strength Wide Width Textiles - G208
Wedge Grip for High Strength Wide Width Textiles - G208
Wedge Action Grips » Mechanical Wedge Grips

Specification

Force
9000 lb (40 kN) & 44500 lb (200 kN)
Grip Type
Fixed or stationary grip body while jaws move vertically and laterally

Accessories

Thickness
0.23 in (6 mm); 0.47 in (12 mm); 0.8 in (20 mm)
Mechanical Wedge Grip - G243
Mechanical Wedge Grip - G243
Wedge Action Grips » Mechanical Wedge Grips

Specification

Force
4500 lb (20 kN) & 11250 lb (50 kN)
Grip Type
Fixed or stationary grip body while jaws move vertically and laterally

Accessories

Thickness
0.63 in (16 mm); 0.4 in (12 mm)
Mechanical Wedge Grip - G256
Mechanical Wedge Grip - G256
Wedge Action Grips » Mechanical Wedge Grips

Specification

Force
1125 lb (5 kN)
Grip Type
Fixed or stationary grip body while jaws move vertically and laterally

Accessories

Thickness
0.31 in (8 mm)
Mechanical Wedge Grip - G45
Mechanical Wedge Grip - G45
Wedge Action Grips » Mechanical Wedge Grips

Specification

Force
3 models from 55000 lb (250 kN) to 90000 lb (400 kN)
Grip Type
Round, Flat

Accessories

Thickness
2.95 in (75 mm)
Mechanical Wedge Grip - G527
Mechanical Wedge Grip - G527
Wedge Action Grips » Mechanical Wedge Grips

Specification

Force
Four models from 2250 lb (10 kN) to 55000 lb (250 kN)
Grip Type
Jaws move laterally in stationary position while grip bodies move on adjustment.

Accessories

Thickness
Models vary from 0.63 in (16 mm) to 1.2 in (30 mm)
Mechanical Wedge Grip - G622
Mechanical Wedge Grip - G622
Wedge Action Grips » Mechanical Wedge Grips

Specification

Force
2250 lb (10 kN)
Grip Type
Fixed or stationary grip body while jaws move vertically and laterally

Accessories

Thickness
0.43 in (11 mm)
 
18 results - showing 1 - 10 1 2

Test Equipment

  • Applications
  • Test Machines
  • Accessories
    • Vise Side Opening Grips
    • Peel Test Fixtures
    • Wedge Grips
    • Fatigue Grips
    • Single Purpose Grips
    • Compression Fixtures
    • Flexural Bend Fixtures
    • Extensometers
    • Environmental Accessories
    • Capstan Grips
    • Sample Preparation Aids

Featured Applications

  • Fatigue Test Equipment
  • Tensile Test Equipment
  • Peel Test Equipment
  • Compression Test Equipment
  • Flexural Bend Test Equipment
  • Industry Standards

Corporate

  • About TestResources
  • Contact Us
  • Site Feedback

Live! Chat

Test Machines | Grips & Fixtures | Contact Us | RESOURCES | Support

TestResources Inc. - 701 Canterbury Road, Shakopee, MN, 55379, USA
Toll Free: 1.800.430.6536 | +1.952.944.6534 | Fax: 1.952.233.3682
CONTACT US

 
Copyright © 2012 TestResources. All Rights Reserved.