Instron® 2712-04x Series Pneumatic grips are packed with features to enhance gripping performance, usability, and operator safety. PRINCIPLE OF OPERATION Pneumatic side-action grips offer a versatile gripping solution for a wide range of materials. The gripping force is controlled by adjusting the inlet air pressure and remains constant even if the specimen thickness changes significantly during the test. The quick and easy operation of the grips improves productivity and usability compared to other types of gripping techniques. A pneumatic cylinder in the grip body actuates dual-lever arms that move the jaw faces together symmetrically in a self-centering action to clamp the specimen. The 1 and 2 kN models feature jaw face adjustment to minimize the opening to the thickness of the specimen to further reduce the risk of pinching. The 5 and 10 kN models feature adjustable jaw face offset for irregular specimens, such as lap-shear or components. Grips are attached to the system by a simple clevis pin. The ergonomically designed locknuts eliminate backlash. Jaw faces can be changed single-handedly in seconds without the use of tools or pins. The grips can be left on the system and there are no loose items to misplace. APPLICATION RANGE • Static tensile tests on a wide range of materials and specimen types including plastics, metals, textiles, paper, thin sheet, foil, and wire. • Type of loading: Tensile, static and tension-tension cyclic tests. Not suitable for high-cycle dynamic fatigue tests. • Specimen shapes: Round (wires) and flat specimens with or without shoulder. FEATURES AND BENEFITS • 1, 2, 5, and 10 kN options • Robust design • Dual-action gripping ensures the specimen self-centers. The 5 and 10 kN models feature adjustable offset for lap-shear and other asymmetrical specimens • Each grip features an air valve to open and close the grips or there is an optional footswitch • Rotatable air inlet with air flow control improves hose runs and provides adjustable closing speed • Unique locknut design removes backlash in the loadstring without the need for tools • Jaw faces can be changed in seconds without the use of tools or pins • Large space between the jaw faces and the grip body eases specimen insertion and reduces the risk of pinched fingers • Jaw face shields add another layer of protection for the operator, as well as having markings that help you to maintain good specimen alignment • Excellent, repeatable gripping performance is assured by the robust, fully enclosed self-centering mechanism • Enclosed design resists dirt and debris • High quality, low maintenance components provide reliability and low cost of ownership • Wide opening for thicker specimens • Variety of jaw face sizes and surfaces • Specimen Alignment Device ensures accurate specimen placement (optional accessory)

Pneumatic Side Action Grips | 2712-04x Series SPECIFICATIONS Catalog Number Maximum Force Capacity Maximum Specimen Thickness 2 Maximum Jaw Face Travel (per face) Upper Fitting Lower Fitting Jaw Center to Grip Edge (C) Single Grip Weight (less faces) Temperature Range Gripping Force at 60/90 psi (4/6 bar) Air Pressure Mid Stroke Notes: 1. Air supply should be clean and dry. Regulator to allow gripping force adjustment highly recommended. 2. Maximum specimen thickness may depend on jaw face selection. See Jaw Faces table on page 4. 3. 2712-045/-046 feature adjustable jaw face offset of up to 8...

Pneumatic Side Action Grips | 2712-04x Series Optional Accessories for Improved Productivity, Ease of Use, and Repeatability 2701-220 Specimen Alignment Device Ensuring that each specimen is subjected to the same axial loading has an important influence on the repeatability of the testing system. The optional specimen alignment device ensures that the specimen is loaded vertically every time. It can be used with rigid and semi-rigid materials where the specimen can be pressed lightly against the backstop for rapid loading, or with flexible materials, such as tapes and foils, where the backstop...

Pneumatic Side Action Grips | 2712-04x Series Rubber-coated Rubber-coated Rubber-coated Rubber-coated Rubber-coated Rubber-coated Rubber-coated Rubber-coated Rubber-coated Rubber-coated Rubber-coated Rubber-coated Serrated Serrated Serrated Serrated Serrated Serrated Serrated Serrated Serrated Serrated Serrated Serrated Smooth-ground Smooth-ground Smooth-ground Smooth-ground Smooth-ground Smooth-ground Smooth-ground Smooth-ground Smooth-ground Smooth-ground Smooth-ground Smooth-ground Brake-lining (HFC) Brake-lining (HFC) Brake-lining (HFC) Line-contact Line-contact Wave-profile Wave-profile Vee-serrated Vee-serrated...