This machine is used to measure the resistance of road stone to the polishing action of vehicle tyres on a road surface, simulating actual road conditions.

The specimens are manufactured with suitable moulds and mounted on the road wheel. The wheel then spins in contect with a spring-loaded solid rubber tyre. 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 remainingtime and the speed rotation of the wheel holding the specimens.

Supplied 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.

Power supply: 230 V | 50 Hz | 750 W
Samples: 14