SPECIMEN SIZE
The width of the wear path is 12.7 mm (0.5 inch),
and located 31.75 mm
(1.25 inch) from the center
of the specimen. The size of the specimen may
vary depending on the material being evaluated.
For most rigid materials, a sample approximately
100 mm
(4.0 inch) square is recommended.
Flexible specimens are typically circular and
require the use of the clamp ring. If a mounting
card is used, the specimen should be
approximately 108 mm
(4.25 inch) in diameter. If
no mounting card is used, a 135 mm
(5.25 inch)
specimen is required such that the clamp ring
will grip the overlapped material.
If the specimen is less than the suggested size,
it is possible to position two or more specimens
on a mounting card to meet the size
requirement. If the edges are not flush together
or if the samples are of different thickness, the
edges may wear at a different rate than the rest
of the specimen.
The standard material thickness that can be
evaluated with the Taber Rotary Platform
Abraser is 6.35 mm
(0.25 inch). For materials
greater than 6.35 mm (0.25 inch) but less than
12.7 mm
(0.5 inch), the S-21 extension nut may
be used. Specimens with a thickness greater
than 12.7 mm
(0.5 inch) can be tested using the
arm height extension kit.
SPECIMEN MOUNTING OPTIONS
To expand the versatility of the Taber Abraser,
mounting options and interchangeable specimen
tables are available to evaluate materials not
easily tested with the standard configuration. All
tables are engineered with a ball plunger and
drive pin spring clutch that locks the table onto
the motor shaft. This prevents the table from
shifting during a test, but allows for it to be easily
removed for specimen inspection or to clean the
motor shaft cavity. To gain access to the
specimen holder, lift the suction nozzle on its
hinge and raise the abrading arms up and back
beyond their balance point.
Mounting Cards (S-36 and S-36-1)
These 108 mm (4.25 inch) rigid cards are coated
on one side with pressure sensitive adhesive.
Designed to hold textile and other flexible test
specimens tightly to the mounting surface, they
prevent wrinkling while undergoing testing. A
test record form is printed on the backside of the
card for permanent record. Mounting cards are
available as square (S-36) or round (S-36-1).
Figure 14
Mounting Sheets (S-37 and S-37-1)
These 108 mm (4.25 inch) sheets are coated on
both sides with pressure sensitive adhesive
overlaid with protective paper that is peeled off
just prior to use. Thinner than the S-36 and S-
36-1, mounting sheets are used to provide a
non-slip attachment of the specimen to the
surface of the turntable and are especially useful
for materials difficult to drill a center hole (such
as glass or ceramics). Mounting sheets are
available as square (S-37) or round (S-37-1),
and have a test record printed on both sides
enabling them to be used as a mounting card.
Figure 15
Figure 16
12 5135 / 5155 Operating Instructions ver 1.1
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