J39 series straight four point press Introduction ·Big and main parts are optimized by FEM. ·Welded crown,column and bed are pre-tightened with tie rod bolt;press with high intensity and rigidity. ·Asynchronous drive with small slide lateral force. ·Drive gear of high strength alloy steel;herringbone gear of high speed gear pair.tooth grinded hardened straight gear of low speed gear pair. ·Eight-face rectangle guide of slide. ·Part revolution pneumatic friction clutch brake;optional imported wet type clutch brake. ·Hydraulic overload protector with high sensitivity. ·Automatic oil lubrication. ·Imported safety dual solenoid valve. ·Double control:elec.cam and mech.cam. ·Optional:air cushion,moving bolster,tonnage,bufer.