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
• Lubricant.
• Appropriately sized double swivel eyebolts, adequately sized wood blocks and plywood sheet (or equivalent),
and an appropriately sized lifting device.
Important:
NO STANDARD EYEBOLTS should be used to lift the grip.
Install Axial-Torsional Grip
If you are installing the grip on an axial-torsional force transducer, perform the force transducer alignment
procedure before proceeding (see the appropriate load unit product manual).
The following procedure assumes that the actuator is mounted in the base of the load unit and the force
transducer is mounted to the crosshead. If you have a load unit with the actuator mounted to the crosshead,
make the appropriate changes to the following procedure.
For an assembly reference, see Axial-Torsional Grip Installation Components on page 45.
Note:
Although it is possible for the grips to be installed by one person, we recommend using two people to
lift, handle, and position the grips.
1.
Warning:
Grip installation is dangerous because it occurs within the crush zone of the force train while
full hydraulic pressure is applied and actuator movement is required during the installation.
Unexpected actuator movement can cause personal injury and damage to the equipment.
Take every precaution to avoid unexpected actuator movement while installing the grips.
Set up the load unit.
a) Turn on the system hydraulic pressure.
b) Adjust the actuator and crosshead position as necessary to allow adequate room to install the grips.
c) Select rotation control and adjust the actuator to the mid-rotation position.
d) Turn the hydraulic pressure off.
e) Ensure that system hydraulic pressure has been reduced to zero before proceeding. To do this, turn
off the hydraulic power unit and exercise the actuator until it stops moving.
f) Clean and lubricate all of the surfaces that will contact each other (screw threads, spacers, and so
forth)
g) Clean the surfaces with alcohol or similar decreasing solvent. Lubricate the parts with Molykote G-n
paste.
2. Mount the lower grip to the actuator piston rod using the actuator-to-grip coupling.
46 Series 647 Hydraulic Wedge Grips Reference Manual
Installation