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ZT320-12 Topless Tower Crane

1. Crane performance
• Max. jib length: 80 m;
• Max. lifting capacity 12 t;
• Max. hoisting capacity at jib tip: 1.8 t;
• Max. lifting moment: 333.6 t.m;
• Max. free-standing height: 61.2 m;
. Max. working height of anchored crane: 211.2 m;
• Hoisting mechanism: QPL1290A; power: 45 kW; drum volume: 760 m;
• Slewing mechanism: 3*HPV95F1.130E; motor torque: 3*95 N.m;
• Trolleying mechanism: BP55C; power: 5.5 kW;
• Base types of tower crane: outrigger stationary, chassis stationary and mobile.

2. Electrical control system
With PLC control, the electrical control system enjoys better reliability and safety. Produced by professional manufacturers with advanced foreign technology, the electrical elements feature service lives that are 3 or 4 times longer than that of domestic products, less faults, easy maintenance and repair as well as reliable operation.

3. Technical features
• The crane boasts of multiple operation modes and wide application. The crane can work in different forms: stationary crane with embedded outriggers, stationary crane with under-frame, stationary crane with embedded bolts and crane anchored to wall, thus being applicable to various construction projects.
• The complete machine adopts internationally well-received beautiful shape;
• The crane features high working speed and excellent speed regulation performance. Stepless speed regulation by frequency control, the world's most advanced solution, is adopted for the trolleying mechanism and slewing mechanism, thus ensuring more stable and reliable operation ;
• The cab is independently installed externally with good vision and large inner space, thus offering a good working environment for operators;
• A variety of safety devices are equipped, which are all mechanical or mechatronic products that are applicable to severe working conditions, so as to ensure the tower crane's reliable operation.

Rated Hoisting Moment (kN.m)3200
Max Hoisting Height (m)Rope fallAnchored crane
α=2211
α=4105.5
Max Hoisting Capacity (t)12
Hoisting MechanismRope Fallα=2α=4
Speed (t/m/min)907236453618
Lifting weight (t)2364612
Power (kW)45
Trolley MechanismSpeed (m/min)0~80
Power (kW)5.5
Slewing MechanismSpeed (r/min)0~0.6
Stall Torque (N·m)3*95
Jacking MechanismWorking Pressure (MPa)31.5
Speed(m/min)0.45


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