LTF GRINDING MACHINE WITH REINFORCED COLUMN EXTRA TYPE - ART. 664 COMPLETE WITH MAGNETIC CHUCK 320 X 150 USED MACHINE, CE, REFURBISHED AND SUITABLE FEATURES • Base and column support arm: made of monolithic cast iron of the highest quality with ribs in the points subjected to the greatest stress, so as to allow maximum rigidity to the grinding wheel head. • Grinding wheel motor head: composed of a special three-phase motor with external ventilation and dynamically balanced, whose large spindle rotates on special bearings suitable for high speeds, with automatic backlash recovery. • Column: cast iron, hinged on the special arm by means of large adjustable tapered roller bearings, to allow maximum rigidity to bending. • Rapid vertical advance: obtained by means of a graduated handwheel that acts on a pair of helical gears, so as to allow an advance of 2 mm with each turn. • Micrometric vertical advance: by means of a pawl placed on the handwheel drum; it can be engaged or disengaged, allowing direct readings on the handwheel vernier of 0.01 mm. ACCESSORIES SUPPLIED • cooling system with electric pump • grinding wheel holder complete with cup wheel • protection cover • service key • very low voltage controls • permanent magnetic chuck 320 X 150 TECHNICAL DATA Art. 664 Distance between column and grinding wheel axis 260 mm Max. distance between table and grinding wheel 300 mm Max. grinding surface 350x170 mm Rapid feed for each handwheel turn 2 mm Micrometric feed with pawl 0.01 mm Dimensions of the cup wheel 200x80x78 mm Grinding wheel revolutions per minute No. 2,800 Grinding wheel motor power 4 HP Electric pump power 0.15 HP Frequency 50 Hz Power supply 380V three-phase Overall dimensions 1100x950x1,700 mm Net weight approx. 550 kg.