Precision Manual Wedge Grips - 2716-028/0300 pages

2716-028/030
Precision Manual Wedge Grips
Instron® 2712-028/030 Series Precision Manual Wedge Grips
provide reliable gripping for a vast range of materials, as well
as repeatable alignment that meets Nadcap requirements1.
Features
• 100 and 250 kN (22,000 and 56,000 lbf) capacities
• Grip operation via a safe and easy-to-use ratchet handle
• Moving body design provides accurate and repeatable
t specimen alignment capable of meeting the alignment
t requirements of Nadcap AC7122-1 and AC71011
• Jaw faces can be quickly changed without the use
t of tools
• Wide temperature range of -80 to +250°C
t (-112 to +482°F) without changing parts or lubricants
• Adjustable specimen stop ensures repeatable
t specimen alignment
• Excellent, repeatable gripping performance is assured t
t by the robust, self-centering mechanism
• Enclosed design resists dirt and debris
• Variety of jaw face sizes and surfaces
• “Piggy back” adaptors allow test fixtures to be installed
t without the need to remove the grips from the machine
Principle of Operation
A worm gear drive in the moving grip body drives the grip
body that closes the jaw faces together symmetrically, in a
self-centering action, to clamp the specimen. This ensures
accurate and repeatable specimen alignment, satisfying
Nadcap AC7122-1 and AC71011.
The jaw faces can be changed in seconds without the use of
special tools.
Using “piggy back” adaptors, fixtures for different test types
(e.g. compression and flex) can be attached to the grips
while the grips are left on the system.
The quick and easy operation of the grips improves
productivity and usability compared to other gripping
techniques.
Notes:
1. New 598X systems with factory fitted grips meet the alignment specifications in the current Nadcap checklists. Achievement of Nadcap alignment
specifications is critically dependent on the total testing system configuration and cannot be guaranteed, solely, by using 2716-028/-030 grips. If you require
Nadcap certification then this must be discussed directly with Instron to ensure the suitability of your testing system
1
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Accessories for Materials Testing
Manual, moving body, wedge action self-centering grips
offer an effective gripping solution for demanding tensile
tests on composites, metals, and other rigid materials. The
initial gripping force is applied manually and then, as the
test proceeds, the wedge action allows the gripping force
to increase in proportion to the applied load.