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
Assembled
Weight
Hydraulic
Chamber
Piston
Extension
CylinderWedge
Chamber
LocationModel
64 kg (142 lb)16 kg (34 lb)12 kg (26 lb)5 kg (11 lb)24 kg (52 lb)bottom
131 kg (288
lb)
37 kg (82 lb)
37kg (82 lb)
17 kg (37 lb)
24 kg (53 lb)
5 kg (11 lb)
7 kg (16 lb)
72 kg (158 lb)
72 kg (158 lb)
top
bottom
647.25
141 kg (310
lb)
The following procedure assumes 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.
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.
Warning:
The grips and their components can be heavy, which can make handling them awkward.
Dropping a grip or one of its components can cause injury to personnel and damage to
equipment.
Ensure that you take appropriate precautions while moving and positioning the grips and their
components.
Set up the load unit.
a) Turn on the system hydraulic pressure.
b) Position the actuator and crosshead as necessary to allow adequate room to install the grips.
c) Turn the hydraulic pressure off.
d) 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.
2. Disassemble the grips.
a) Place both grips on a clean work surface near the load unit.
Note the difference in length. The longer grip is the lower grip and the shorter grip is the upper grip.
Lay both grips on their side and block, as necessary, to prevent them rolling while being worked on.
Series 647 Hydraulic Wedge Grips Reference Manual 57
Installation