Operation
MTS Landmark™ Tabletop Load Units - Product Information
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position of the actuator, and the size of the fixtures or grips being used.
3. Install the specimen.
Specimen installation varies according to the type of grip being used. For installation
instructions, see the appropriate grip manual. MTS manufactures a variety of grips:
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The Series 641 Hydraulic Wedge Grips (hydraulically controlled) are specifically
designed for static or fatigue testing applications. They are available with a self-
aligning feature.
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The Series 643.6X Tension/Compression Grips (mechanical) are used for testing
threaded-end and button-end specimens in tension, compression, or
tension/compression.
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The Series 646 Hydraulic Collet Grips (hydraulically controlled) are designed to
perform in a wide variety of testing applications (for example, high and low cycle
fatigue, tension, and compression).
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The Series 647 Hydraulic Wedge Grips (hydraulically controlled) are specifically
designed for static or fatigue testing applications. There are a variety of configurations
of this grip.
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The Advantage Grips (mechanical) are specifically designed for static or fatigue
testing applications. The Advantage Mechanical Wedge grip is the mechanical
version of the Series 647 Hydraulic Wedge Grips. Advantage Grips also come in
Screw Action and Pneumatic versions.
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Bionix grips and other specialty grips (mechanical) are designed to grip specific types
of material such as string, tread, tendons, and so forth.
Each type of grip requires the specimen or specimen fixture to fit properly into the grip. You
should always review specimen installation procedures found in any grip Product
Information manual.
Caution:
Incorrectly installed specimens can be a hazard during testing.
An insufficiently gripped specimen can cause specimen damage, equipment damage,
and the possibility of specimen fragmentation.
Before testing, ensure both grips are clamped and the specimen is secure.
4. Set up the load frame for testing.
A. Set the actuator velocity limiting switch to the hare (full flow).
B. Disable the handset and set up the controller for system operation.
5. Reset the controller Gate Interlock.
6. Apply load unit station high hydraulic pressure.
