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A128N ACCELERATED POLISHING MACHINE

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DETERMINATION OF THE POLISHED STONE VALUE
STANDARDS: EN 1097-8, EN 1341, 1342, 1343 | BS 812:114 | NF P18-575 | CNR N.105

MAIN FEATURES
Up to 14 specimens simultaneously.
Road wheel speed, from 310 to 330 RPM.
Digital control panel for an easy test execution.
Resultant specimens perfectly suitable for the skid
resistance tester.

It measures the resistance of road aggregates, paving stones and
paving blocks to the polishing action of vehicle tyres on a road
surface.
The specimens are manufactured with suitable moulds and located on
the Road Wheel.
The wheel is now rotated and enters in contact with solid rubber tyre,
spring loaded. Abrasive charges are continuously introduced by two
automatic mechanical feeders (hoppers).
The feeders are held by a suitable support disjoined from the machine
body; this solution saveguards feeding calibration and realiability/life
of the hoppers from the influence of test execution vibrations.
The water is supplied at a controlled rate through a water container
equipped with flow regulator.
During the test execution the display shows the remaining
time and the speed rotation of the wheel holding the specimens.
Supplied complete with 2 rubber wheels (one for corn and one for
flour emery), set of 4 specimen moulds and 2 mould covers, while
control stone, corn and flour emery have to be ordered separately (see
accessories).
Power supply: 230V 50Hz 1ph 750W
Dimensions: 1800x820x600 mm
Weight: 175 kg approx.

ACCESSORIES
A128-02 CORN EMERY, 25 kg pack
A128-03 FLOUR EMERY, 5 kg pack
A128-13 FLOUR EMERY “Original”, 5 kg pack
A128-04 CONTROL STONES, ungraded, 25 kg bag.
A128-05 FRICTION TESTER REFERENCE STONE (Criggion Stone),
ungraded, 25 kg bag.
A049-02 FLAKINESS SIEVE, slot 7.2 by 40 mm, used to retain the
road aggregates.
SPARES
A128-11 Mould (without cover) to prepare the specimen.
A128-12 Cover for the mould.

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