Instron 300DX, Operating Instructions Manual

Page: 35 / 96

35
Mount fixtures
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The frame is supplied with multiple bolt patterns for the mounting of specimen load trains and testing
accessories. Some bolt patterns are designed for the mounting of specific standard Instron accessories
or fixtures, while others are more general for the mounting of a wide range of standard Instron
accessories or fixtures. Any bolt pattern can be used for the mounting of customer fixtures; appropriate
adaptation may be necessary. The capacity of any load train or accessory may be limited by the capacity
of the bolt pattern being used. Most bolt patterns can accommodate testing at full frame capacity. Refer
to the Note below.
Details of the bolt patterns provided on your frame can be found on the General Assembly drawing that is
located in the separately supplied “Reference Manual-Equipment”. General Assembly drawings are
model specific; please be sure to refer to the appropriate drawing for your model and its configuration.
Mount tension fixtures
When it is desired to use other tension fixtures instead of the grip assemblies to grip a specimen, external
tension fixtures (purchased separately) can be mounted to the tension crosshead and adjustable
crosshead with proper adapters. Adapters can either be clamped in the grip assemblies or bolted to the
crossheads using the bolt pattern provided on the top or bottom of each crosshead. For operation of the
grip assemblies, refer to
“Operate grip assemblies - G1-style and G7-style crossheads” on
page 42 .
Mount compression fixtures
Compression fixtures (purchased separately) must be mounted to the bumper plate that is on the bottom
of the adjustable crosshead and the compression table. Neither the bumper plate nor the compression
table can be used to apply force directly to a specimen.
•
Upper compression fixtures can be mounted to the bumper plate by one of two methods:
• Bolt the fixture directly to the bumper plate using the bolt pattern provided in the bumper plate.
• Use the setscrew and button hole provided in the bumper plate, see Figure 8 . The compression
fixture must be equipped with a mounting button that fits into the button hole, as shown in
Figure 8 . The setscrew is tightened against a recess in the holding button.
•
Lower compression fixtures can be mounted to the compression table using the bolt pattern provided
in the compression table. Depending on the compression fixture, it may not be necessary to secure
the fixture to the table, refer to any instructions provided with your fixture.
Use of lifting or handling equipment (i.e. overhead crane, hoist, etc.) may be necessary to lift and install
testing accessories. Many testing accessories weigh in excess of 15 kgs (30 lbs) and may be difficult for
operators to install and remove from the frame. All of these considerations are the responsibility of the
customer.
Any bolt pattern that is six M10 x 1.5p tapped holes equally spaced on a 100 mm (3.937 in) bolt circle
diameter can only accommodate low range tension testing up to 100 kN (22,500 lbs).