... holes diameter rangeΦ3-30mmMax deep hole depth2500mm,2000mm,1500mm,1000mm,600mmDrilling box spindle speed(stepless)600-7000r/minInfeed ... -330mmCenter height of spindle350mmBed box spindle hole diameterΦ75mmspindle front bore holeΦ85mm,1:20Spindle speed range, ... spindle front bore hole(optional) )Φ85mm,1:20Drilling box spindle speed range(optional)80-350r/min 6gradesInfeed speed range(stepless)5-1000mm ...