User Manual
Table Of Contents
- Technical Support
- Preface
- Introduction
- Overview Reference
- Series 647 Hydraulic Wedge Grips Component Identification
- Series 647 Hydraulic Wedge Grips Functional Description
- About Gripping Specimens
- About Wedges
- About Spiral Washers
- About Couplings
- About All Temperature Grips
- About Environmental Chambers
- Hydraulic Fluid Recommendations
- Cooling Water Specifications
- Series 647 Wedge Grip Temperature Ranges
- Series 647 Hydraulic Wedge Grip Force and Torque Capacities
- Safety
- General Safety Practices: Grips and Fixtures
- Read all manuals
- Avoid Pinch and Crush Points
- Locate and read hazard placards/labels
- Know facility safe procedures
- Know controls
- Know Specimen Properties
- Have first aid available
- Be aware of component movement with hydraulics off
- Keep bystanders safely away
- Wear proper clothing
- Remove flammable fluids
- Check bolt ratings and torques
- Lift Equipment Safely
- Practice good housekeeping
- Do not exceed the Maximum Supply Pressure
- Do not disable safety devices
- Provide adequate lighting
- Provide means to access out-of-reach components
- Wear appropriate personal protection
- Handle chemicals safely
- Know system interlocks
- Know system limits
- Do not disturb sensors
- Ensure secure cables
- Stay alert
- Contain small leaks
- Stay clear of moving equipment/avoid crush points
- Know the causes of unexpected actuator motions
- General Precautions for Environmental Components
- Hazard Placard Placement
- General Safety Practices: Grips and Fixtures
- Installation
- Operation
- Maintenance

Overview Reference
The MTS Series 647 Hydraulic Wedge Grips grasp and hold a specimen in place during testing, and provide
a constant, hydraulically actuated gripping force regardless of the applied test loads. The grips are specifically
designed for static or fatigue testing applications in MTS testing systems. A variety of wedges allow the grips
to be used to test a variety of materials. Optional equipment includes a cooling/warming kit and an external
hydraulic grip supply.
The size and shape of the Series 647 Hydraulic Wedge Grips vary among the models.
Grip TypeItem
Axial1
Axial-Torsional2
All Temperature3
What you need to know
MTS Systems Corporation assumes that you know how to use your controller. See the appropriate manual
for information about performing any controllerrelated step in this manual’s procedures. You are expected to
know how to perform the following procedures:
14 Series 647 Hydraulic Wedge Grips Reference Manual
Introduction