QTZ80 tower crane:
Mast sections are shaped into square tube structure(1800*1800*2800) or single angle sheet structure(1600*1600*3000). Main chord steel may select Q345B.Mechanical components are from famous domestic manufacturers, with reliable performance, excellent speed governing and shockless trait. Telescoping cage and lower pivot have advanced design, transported with standard container, thus saving long-distance transportation fee.

Motor	Motor		/	YZRDW250M–4/8
	Power		kW	30/30
	Speed		r/min	1420/725
Brake	Type		/	YWZ3B-315/90
	Brake moment		N.m	630-1250
Reducer	Center distance		mm	630
	Speed ratio		/	i=17.2
Wire rope			/	6×19-13-1700-I
Hoisting speed			m/min	Double rate			Quadruple rate
				10	40	80	5	20	40
Max.load capacity			t	4	4	2	8	8	4
Drum diameter			mm	560
Motor	Type		/	YZR132M2-6
	Power		kW	3.7×2
	Speed		r/min	908
Brake			/	Built-in open-type electromaganetic stopper
Planet gear reducer	Speed ratio		/	i=157
Slewing bearing	Type		/	011.40.1400
Motor	Type		/	YDEJ132S-4/8 B5
	Power		kW	3.3/2.2
	Speed		r/min	1450/720
Reducer			/	Planet gear reducer
Wire rope			/	6×19-7.7-1670-1
Motor	Type		/	Y132M-4
	Power		kW	7.5
	Speed		r/min	1420
Hydraulic pump station	Fluid		L/min	10
	Rated pressure		MPa	25
Hydraulic ram		Type	/	HSGK-160/110E
Stroke			mm	1600