VAM 300S/V VERTICAL STONE GRINDING MACHINE WITH REINFORCED COLUMN COMPLETE WITH MAGNETIC TABLE 315 , so as to allow maximum rigidity to the grinding wheel head. • Grinding wheel motor head: composed of a special three-phase externally ventilated and dynamically balanced motor, whose large spindle rotates on special bearings suitable for high speeds, with automatic clearance recovery. • Column: cast iron, pivoted on the appropriate arm by means of large adjustable tapered roller bearings, to allow maximum rigidity to bending. • Rapid vertical advancement: is obtained by means of a graduated handwheel which acts on a pair of helical gears, so as to allow advancement at each revolution. • Micrometric vertical advancement: by means of a pawl placed on the handwheel drum; it can be engaged or disengaged, allowing direct readings on the vernier of the handwheel. ACCESSORIES SUPPLIED • refrigeration system with new electric pump • grinding wheel holder complete with cup wheel diameter 200 mm • protective casing • service key • New electrical panel with very low voltage controls • permanent magnetic chuck 315 X 155 TECHNICAL DATA Distance between column and grinding wheel axis 260 mm Max distance between magnetic chuck and grinding wheel 300 mm Max grindable surface 350x170 mm Rapid feed for each turn of the handwheel 2 mm Micrometric feed via pawl 0.01 mm Dimensions of the cup wheel 200 mm Wheel revolutions per minute No. 2,800 Grinding wheel motor power 4 HP Electric pump power 0.15 HP Frequency 50 Hz Power supply 400V three-phase Overall dimensions 100x115x180 cm Net weight approx. 550 kg