... balance tests .each hoisting mechanism is carrying on no-load ,static load ,dynamic load and so on,guarantee the reliability ,safety and durableness ... for safe driving. Tower Crane QTZ50(5008)ItemUnitRated load momentkN.m500Max.loadT4RadiusM3 ~ 50Tip Max.loadT0.8Max working amplitudeM50Hoisting heightIndependentM30Attached120Trolley speedm/min22/33Hoisting ...