This machine is used to produce accelerate polishing, conforming to Standards, of stone chippings set onto the periphery of a special revolving wheel. After the cycle, involving two grades of emery powder, the polished specimens are tested on the skid tester (see links below) which gives the PSV, Polished Stone Value. The Polished Stone Value (PSV) of a material used as road surfacing is a measure of how rapidly it becomes polished under the action of vehicle tires. The machine is supplied complete with road wheel, side plate, rubber rings, two tired wheels, drive belt, abrasive feed mechanism, corn emery, flour emery, set of one specimen mould and one mould plate. The machine is electronically controlled by a keyboard with 4 row x 20 character LCD display. Complete with emergency stop button.

Main Features:

Digital control of speed rotation

Full protection of all the moving part area with safety switch

Removable water tank, easy refill

Advanced digital interface for programming test steps and pauses

Independent control of the two feeders

Technical Specifications:

Electronic control of rotation speed and feed mechanism

Aluminium wheel  406 mm dia.

Digital display 4-row x 20-character

Clamping device for specimen

Two rubber tired wheel 200±3 mm dia.

Rotation speed adjustable from 315 to 325 r.p.m.

Lever arm and weight loading the tired wheel on the aluminium wheel to 725±10 N

Feed mechanism for corn emery and flour emery microprocessor controlled

Rated power: 850 W

Electric motor: 750 W

Overall dimensions (HxWxD): 1800x980x510 mm

Weight approx.: 200 kg.