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
Hydraulic Fluid Recommendations
All frame mounted 3000 psi and 10,000 psi grip supplies use standard Mobile DTE-25 hydraulic fluid from
the HPU. The grips that use this fluid are rated to 65 °C (150 °F) maximum. All other hydraulic grips that are
used within a chamber are rated to maximum of 177 °C (350 °F). These grips require the use of a stand alone
grip supply that uses Mobile SHS 525 hydraulic fluid. This fluid has a flash point and overall temperature
rating higher than 177 °C (350 °F). MTS does not recommend the use of hydraulic grips that have hydraulic
fluid inside chambers rated at higher temperatures.
Cooling Water Specifications
SpecificationParameter
35°C (95°F) maximumTemperature
3.8 L/min (1 gpm) minimum, at 0.276 MPa (40 psi)Flow
Water chemistry is critical for a successful grip cooling. Generally speaking, municipal
drinking water that is pollution free, bacteriologically safe, and has a neutral pH is
perfectly acceptable for grip cooling.
Quality
Series 647 Wedge Grip Temperature Ranges
The temperature range of the grips is determined by the type of seals used in the grips and the type of
hydraulic fluid used with the grips. The grips are available in the following temperature ranges:
• -40°C to 177°C (-40°F to 350°F)
• -130°C/315°C (-200°F/600°F)
• -130°C/540°C (-200°F/1000°F)
Not all grip models are available in all temperature ranges.
Series 647 Hydraulic Wedge Grips Reference Manual 23
Introduction