T8590A/T8590B Valve seats boring machine is an extremely reliable machine whose design to repair various type of engines valve seats ring. Adopted rectangular guideway with high rigidity. Machine head can be moved up and down automatically, easy adjustment and simple operation. Equipped a guide shaft with corresponding size, the machine can repair the valve seats ring with diameter 20-90mm and working conical angle 30°,45°or 60°, the air-floating worktable clamp the workpiece and freely move.The high precision universal boring bar is attached to ball joint which enables it to be used with inclinations in any direction. Movement is transmitted by a motor which operate with constant torque. These combined movements enable the tool to control the real axis of the valve guide and enable the boring is carried out with absolute precision. Model T8590A T8590B Boring diameter 20-90 mm 20-90 mm Spindle speed range 55, 85, 210, 320, 370, 550 rpm 30-550 rpm (Stepless) Spindle travel 180 mm 180 mm Distance from spindle axis to guideway surface 270 mm 270 mm Max. distance from end of spindle to working table 750 mm 750 mm Moving speed of machine head 512 mm/min 512 mm/min Moving speed of machine head Cross 120 mm 120 mm Longitudinally 860 mm 860 mm Main motor power 1.1/0.85kw 1400/950 rpm 1.1/0.85kw 1400/950 rpm Overall dimensions(L x W x H) 1300x800x1930 mm 1300x800x1930 mm Packing dimensions(L x W x H) 1700x1100x2000 mm 1700x1100x2000 mm N.W. / G.W. 1200/1400 kg 1200/1400 kg