... of expanding main body, second flaring, hydraulic unit, electric control box and portal frame and balancer. 4 pieces of high-pressure ... flexible tubes and 2 pieces of control-cables make a complete system. Portable expander 2tubesMain technical ... holes 25mm)According to workpiecespeedfast,m/min12.5slow,m/min/Power of pump motor,kw2.2Cylinder diameter,mm/Hydraulic oilISOVG32( ...