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
DescriptionItemDescriptionItem
Wood Block7Load Unit Crosshead1
Lower Grip8Force Transducer2
Lower Coupling9Adapter Plate3
Actuator Piston Rod10Upper Coupling4
Load Unit Base Plate11Upper Grip5
Load Unit Columns6
e) Carefully position the grip on top of the wooden spacer on the lower grip.
Note:
You will need to construct a proper support or have someone available to help balance the upper
grip on the lower grip.
f) You might need to insert double swivel eyebolts into the threaded holes on the grip chamber. Attach
a lifting device to the double swivel eyebolts and position the grip on top of the lower grip.
g) Select the upper coupling set. Place the coupling half with the threaded holes against the adapter and
grip threads. Rotate it back and forth, as necessary, until the threads mesh with the actuator and grip
threads.
h) Place the other coupling half against the actuator and grip threads. While holding the two halves
together, thread the socket head cap screws into the coupling until they are finger tight.
i) Check both ends of the coupling to ensure that the gap between the two halves is approximately equal.
If necessary, tighten and loosen the socket head cap screws to achieve this.
4. Tighten the grips.
a) Find the label on the coupling. This label shows the direction to tighten, the rotation pattern for tightening
the cap screws, and other important information. The illustration is an example only.
b) With all of the socket head cap screws finger tight, rotate the coupling assembly in the direction shown
on the label until it is tight. This is essential to ensure proper preloading of the coupling.
c) Tighten the socket head cap screws in the rotation pattern shown on the label, first to 10%, then to
50%, and finally to 100% of the torque specified on the label.
Series 647 Hydraulic Wedge Grips Reference Manual 49
Installation