... and stability Cutting machine, With steel sheet welded struture, hydraulic drive system, accumulator back stroke, it has characters of convenient operation ... safetyBack gauge adopt E20 control systemBall screw, rolling guige, servo motor driving or variable frequency control, with low noise and ... *1700*17004650*1700*17006500*2100*23503900*2000*1700 QC12K digital control hydraulic Swing Beam Shear