... 4.Material: No.45 steel TJ-ISO1 inflatable shaftUsage:This type of air shaft is widely used in slitting machine, cutting machine ... filling gas for the nozzle jet, to make the shaft of off-axle apperance uniform expansion, thereby lock nitrogen-treated ... unloaded.4. Performance and advantages: Board type air shaft in practical applications, it has advantages of convenient operation,quick, air shaft has ...