MTS Advantage Screw Action Grip - Manual (Page 37)

MTS Advantage™ Screw Action Grips Operation 37
How to Install a Specimen—Servohydraulic Systems
The following procedure describes the steps for the initial setup and
specimen loading procedures for MTS Advantage Screw Action Grips that
are installed into a servohydraulic test system. This procedure assumes that
the proper set of face surfaces has been selected and properly installed for
the specimen being tested.
Placing hands in the crush zone between the grips while hydraulic
pressure is being applied is dangerous.
This action can result in injury to personnel and damaging forces being
applied to the specimen.
Use extreme care while performing the following steps.
1. Manually adjust the centering guides, located along the side of the
grips, so that the specimen is centered in the grips.
2. Apply full system hydraulic pressure according to applicable system
procedures. Use extreme care not to cause rapid actuator movement
when performing the following steps.
Improper specimen installation can damage the grips or the specimen.
Ensure that the specimen is in full contact with the grip face. To prevent
damage to the grips or specimen, install the specimen precisely as specified
in this procedure.
Ensure that the specimen is not harder than the grip face.
Damage to the grip face can occur if the specimen hardness exceeds H
B
150.
WARNING
CAUTION
CAUTION