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

Install Extension Rods
About Extension Rod Installation
The Series 647 Hydraulic Wedge Grips can have extension rods mounted so that the grips can be inside an
environmental chamber for testing at extreme temperatures. Grip installation in a load unit with an environmental
chamber involves attaching the grips to the end of the actuator rod and the force transducer or crosshead
using extension rods. The grips are mounted to the extension rods which are mounted to the load unit with
conductor studs or socket head screws.
The following figure shows the components used for most installations.
Extension Rod Installation Components
DescriptionItemDescriptionItem
Connector Stud10Force Transducer or Load Unit
Crosshead
1
66 Series 647 Hydraulic Wedge Grips Reference Manual
Installation