Instron 2716-016, Operator'S Manual

Page: 21 / 78

Wedge Grips
The Model 2716-016 and 017 wedge grips are mechani-
cal wedge-action grips. The capacity of the 016 grip is
1kN (220 lb) and the capacity of the 017 grip is 2 kN
(440 lb).
In operation, the jaw faces that grip the test specimen are
pressed together by movement of the grip body. The jaw
faces are located in a tapered opening in the grip body,
and as an operating ring (or thumbwheel) is turned, the
grip body is raised or lowered while the jaws remain sta-
tionary (see Figure 1-1). This action forces the jaw faces
together or apart. The amount of gripping force applied
to the specimen is controlled by how hard the operating
ring is turned. Because the jaw faces do not move, mini-
mal preload is applied to the specimen while the grips
are tightened.
The jaw faces are interchangeable and have serrated
faces to accommodate flat specimens of material, such
as thin sheet metal.
The 1 kN grip is made of aluminum, the 2 kN grip is
made of stainless steel.
In
troduction
Wedge Grips
1-5