User Manual

DescriptionItemDescriptionItem
All Temperature GripsBAxial GripsA
Water Cooling Lines13Load Unit Crosshead1
Upper Grip Assembly14Force Transducer2
Environmental Chamber15Shim3
Lower Grip Assy16Spiral Washer Set4
Water Cooling Lines17Connector Stud5
Axial/Torsional GripsCUpper Grip6
Adapter Plate18Hydraulic Pressure and return Lines7
Upper Coupling19Wedges (647.250 includes wedge
liners)
8
Left Hand Thread20Specimen Guide9
Right Hand Thread21Lower Grip10
Left Hand Thread22Load Unit Base11
Lower Coupling23Actuator Rod12
Right Hand Thread24
DescriptionItem
Provides the structure to mount the grips and other components in
the force train. It is also the reaction mass for the force train. The grips
are mounted to the force transducer and actuator rod in the load unit.
Load unit
• Crosshead and Base
Plate
• Some load units have the actuator mounted in the base plate and
the force transducer mounted to the crosshead.
• Some load units have the force transducer mounted in the base
plate and the actuator mounted to the crosshead.
Measures the axial forces applied to the specimen. An axial-torsional
version also measures the rotational forces applied to the specimen.
Force Transducer
Clamps a specimen in place. The grips house the wedges and the
hydraulic components that operate the grips.
Upper and lower grips
The grip assemblies of the all-temperature grips have the components
separated so those components most affected by extreme
temperatures are located outside the extreme environment.
Ports the hydraulic fluid to and from the grips. The hydraulic fluid
comes from a system hydraulic power unit (HPU) or a dedicated
Hydraulic pressure and
return lines
Series 647 Hydraulic Wedge Grips Reference Manual 17
Introduction