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

Basic Operation
Operation of the hydraulic wedge grips consists of the following:
• Determine the minimum required specimen gripping pressure to accommodate a specific specimen and
testing application.
• Select the appropriate wedges.
• Load a specimen into the grips.
About Grip Controls
The grip controls are located on the front panel of a load unit or on the front panel of an external hydraulic
grip supply.
Adjustment procedures for the hydraulic grip are supplied either in the load unit product manual or in the
hydraulic grip supply product manual.
DescriptionItem
Hydraulic Controls1
Load Unit2
78 Series 647 Hydraulic Wedge Grips Reference Manual
Operation