Accelerated polishing machine (PSV)

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. 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 machine is electronically controlled by a keyboard with 4 row x 20 character LCD display. Complete with emergency stop button. 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.

• 48-PV5262
  Accelerated polishing machine. 230 V, 50-60 Hz, 1 ph

• 48-PV0525/12
  Corn emery, 5 kg pack
• 48-PV0525/13
  Flour emery, 5 kg pack
• 48-PV0525/16
  Control stone (ungraded), 20 kg bag
  (two bags are required from the standards)
• 48-PV0525/17
  Friction tester reference stone (Criggion stone-ungraded), 20 kg bag

TECHNICAL SPECIFICATIONS

• Electronic control of rotation speed and feed mechanism
• Digital display 4-row x 20-character
• Aluminum wheel 406 mm dia.
• Clamping device for specimen
• Rotation speed adjustable from 315 to 325 r.p.m.
• Two rubber tired wheel 200±3 mm dia.
• Lever arm and weight loading the tired wheel on the aluminum wheel to 725±10 N
• Feed mechanism for corn emery and flour emery microprocessor controlled
• Electric motor: 750 W
• Rated power: 850 W
• Overall dimensions (hxwxd): 1800x980x510 mm
• Weight approx.: 200 kg