Installing to a Load Frame M10-14179-EN
3-2
Installing to a Load Frame
The load string comprises all of the components between a force producing load
frame component (actuator or moving crosshead) and a stationary rigid member
(base plate or fixed crosshead). This includes the grips, couplings and the
specimen. A tight connection between each component is essential for accurate
test data. Any backlash in the load string components degrades the integrity of test
results.
Clevis Pin Couplings
A clevis pin coupling is typically used for attaching the grips to an
electromechanical test system. Figure 3-1 on page 3-2 illustrates the clevis pin
coupling. A male shank connects to a female clevis socket, which connects to
either the load cell or to the base plate. A clevis pin couples the shank and socket
together.
Note: If you are using a high temperature grip, you must lubricate the grip before
installing it. Use a lubricant suitable for the temperature range of your test. Refer
to “Lubrication” on page 5-3 for details.
Figure 3-1. Clevis Pin Coupling
Male grip end
Female clevis
Clevis pin
Clevis pin clip
Rigid base coupling
Locknut
(Depending on grip)
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