Auxiliary Weights
Model 5135 has two pairs of precision stainless
steel weights of 250 grams and 750 grams
furnished with the testing set. In addition to the
mass of the abrading arm itself (250 grams) they
provide standard wheel loads of 500 and 1000
grams.
Figures 6 – 9
show abrasers with
different loads applied (per wheel).
Available counterweights reduce the 250 gram
load to 125 grams or 75 grams (
Figure 9
).
Counterweights may be used in conjunction with
the standard weights to further expand the range
of wheel loads. To offset the weight of the
working wheels, wheels may be placed on the
counterweight-mounting studs.
NOTE:
For simplicity, each weight is marked with the
total load that will be exerted on the wheel.
Figure 6
Figure 7
Figure 8
Figure 9
Vacuum System
Models 5135 and 5155 include a vacuum unit
with a heavy-duty motor and life-lubricated
sealed bearings. With the vacuum power
connection plugged into the rear of the abraser
housing, the vacuum will be automatically turned
on when a test is commenced and shut off at the
end of the test cycles. A flexible rubber suction
hose connects it to the Abraser.
A vacuum pick-up nozzle is hinged to an
adjustable mount at the rear of the housing. The
height above the specimen is set by raising or
lowering the precision vacuum adjustment.
Precision Vacuum Nozzle Adjustment*
The height of the vacuum pickup nozzle is
adjusted by turning a knob. Each turn
represents 1.27 mm
(0.05 inch)
height adjustment,
making it significantly easier to set the proper
distance between the nozzle and specimen
surface. Located on the top of the instrument
next to the vacuum nozzle, the knob is easily
accessible.
Specimen Holder
The Model E100-125 specimen holder
accommodates most materials less than 6.35
mm
(0.25 inch)
thick with a 6.35 mm
(0.25 inch)
center hole. Rigid, flat specimens are secured
using the clamp plate and nut. For flexible
specimens, the E100-101 clamp ring is provided
in conjunction with the clamp plate and nut. An
S-19 rubber pad prevents specimens from
slipping during the test.
Specimen Holder Drive Shaft
The drive shaft for the specimen holder projects
vertically through the motor well in the Abraser
housing. Interchangeable specimen holders are
mounted to this shaft.
5
5135 / 5155 Operating Instructions ver 1.1
