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
Grip Rotations and Shim Part NumberKit Part
Number
1 Turn (360°)1/2 Turn (180°)1/4 Turn (90°)1/8 Turn (45°)1/16 Turn
(22.5°)
443665-21443665-19443665-20443665-07443665-21521050-04
443665-25443665-22443665-24
1
443665-24443665-25521050-05
443665-25443665-23
1
443665-23443665-24443665-25521050-06
443665-27443665-26
1
443665-26443665-02
443665-02521050-07
443665-27443665-26
1
443665-26443665-27
1
443665-27521050-08
443665-29
1
443665-28
1
443665-28443665-15443665-29521050-09
443665-29443665-28
1
443665-28443665-15443665-29521050-10
Preload the Spiral Washers
The connector studs must be preloaded to prevent backlash. Preloading the connector studs requires that a
full tensile load be applied to a specimen mounted in the grips. Therefore, it is assumed that the system
hydraulics and the hydraulic grip supply are operational.
Required equipment:
• The procedure requires that the spiral washers be installed on each connector stud in the force train. You
will also need two spanner wrenches.
• Sometimes you might have multiple fixtures in the force train that have different force ratings. When
installing the fixtures pretensioned with spiral washers, install the fixtures with the lowest force rating first.
Then install any other fixtures from the lowest to the highest force rating.
1. Select force control at the system controller.
2. Turn on the system hydraulic pressure.
3. Select a dummy specimen that will withstand a tensile force 10 to 20% greater than the maximum force
to be applied during the test.
4. Adjust the output pressure of the hydraulic grip supply to the level determined in “Determine the Gripping
Pressure.”
5. Install the dummy specimen in the grips according to the steps provided in “Install a Specimen.”
72 Series 647 Hydraulic Wedge Grips Reference Manual
Installation