Instron 2716-016, Operator'S Manual

Page: 27 / 78

Lever-Action Fiber Grips
The Model 2711-006 lever-action fiber grips have two
spring-loaded levers to provide clamping force on a test
specimen. This action is a pincer action, and is suitable
for single fiber and very fine wire specimens (see Figure
1-4). You adjust the clamping force by changing the
compression on the spring with a thumbwheel.
The grips can be mounted in either a vertical or horizon-
tal position. In the vertical position, the grips will be
slightly stiffer, since there is no bending moment as
there is in the horizontal position. However, it is slightly
more difficult to load specimens with the grips in the ver-
tical position. In the horizontal position (see Figures 3-3
and 3-4), specimen loading is easier, but there is more of
a tendency for the grips to flex.
The grip faces are rubber coated to reduce specimen slip-
page in the grips, and are not interchangeable.
In
troduction
Lever-Action Fiber Grips
1-11