... hole σ60×75mmStroke rate50SpmMax shut480mmSlid surface330,450mmProcessing Obj.Metal etc.Weight8000kg Brief Introduction :J21 series press is ... is the main equipment of stamping sheet metal production, and can be used for punching,blanking, trimming, bending, shallow or ... ,160t ,200t,250t,315t,350t of pressing machine for your choice. J21S-100 deep throat punching machine for metal sheet