Description M10-14179-EN
1-4
Description
Both the Series 2712 and 2732 share a common design. The grip consists of a U-
shaped frame and a cylindrical piston housing. The housing encloses a conical
piston and compression spring. One piston end is cone-shaped and tapers toward
the grip’s open end. Two integral arms, each housing a transfer lever, roller link
and jaw face holder, extend away from the piston housing. The narrow taper of the
piston contacts the two roller links, and the roller links couple to the transfer
levers via dowel pins. Dowel pins couple the levers to the jaw face holders. A
dowel pin couples the rectangular jaw face to the holder.
The 2732 high temperature grips are designed to be inside an environmental
chamber. These grips have extension rods that provide maximum travel in a
chamber and also conduct air to the grips. Inside the frame cavity, a metal bellows
encloses the grip piston.
Models 2712-002 and 2712-019 have an integral toggle valve to open and close
the grips. All other grip models require a separate air control, such as a pneumatic
foot switch, to operate the grips.
Both jaw faces automatically adjust to different specimen thicknesses to ensure
that the line of tensile force remains concentric with the grip body. The grips
within both Series 2712 (except the 2712-001 and 2712-013 grips) and Series
2732 can be equipped with a variety of interchangeable jaw faces in various sizes
and surface types. Refer to Table 2-14 on page 2-15 to find compatible jaw faces
for your specific grip model. Contact your Instron sales representative for
assistance with selecting jaw faces that are suitable for your testing requirements.
Figure 1-3 on page 1-5 illustrates the basic grip components.
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