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Tower Crane QTZ125

Main Specifications of Tower Crane

Technical performance	QTZ 125 Name				Unit	Parameter
	Load moment				Kn.m	1250
	Max. load weight				t	8
	Hoisting height(free mode)				m	52
	Hoisting height(attached mode)				m	200
	Slewing speed				m/min	0.6
	Radius changing speed				m/min	60/30/9.5
	Climbing speed				m/min	0.4
	Hoisting speed				r/min	50/100
	Min. load-lowering speed				m/min	4
	Outline dimension	From jib end to slewing center			m	51.4	56.4		61.4
		From counter jib end to slewing center			m	14.2
	Counter weight				kg	16100	17600		19100
	Electrical motor power				kw	44.8
	Max. working wind pressure				N/m²	250
	Non-work wind pressure				N/m²	800
	Permitted working temperature				℃	-20～+40
Mechanism load ratio			Hoisting mechanism			M5
			Slewing mechanism			M4
			Towing mechanism			M4
Hoisting mechanism	Electrical motor		Model			YZDW250-8/4
			Output(kW)			37/37
			Rotation speed(r/min)			716/1400
	Reducer		Central distance(mm)			600
			Transmission ratio(i)			16
	Steel cable		Configuration			6*19W-14.5-170-I polished- right-twisted
			Max. traction(N)			20000
	Drum		Cable capacity(m)			480
			Layers			4
	Ratio		a=2			a=4
	Load weight(t)		3	3	1.5	6		6		3
	Hoisting speed (m/min)		8.5	40	80	4.25		20		40
Slewing mechanism	Electrical motor		Model			YZR132M2-6
			Output(Kw)			3.7*2
			Rotation speed (r/min)			908
	Reducer		Model			XX4-100-195C-001
			Transmission ratio (i)			195
	Fluid coupling		Model			YOX-280A
	Output gear parameter		Modulus (m)			12
			Tooth quantity(Z)			17
			modification coefficient (X)			0.5
Slewing ring	One line, 4 points touching, ball mode slewing bearing		Model			011.45.1400
			Modulus(m)			12
			Tooth quantity(Z)			133
Hydraulic system	Model					QT80-1
	Electrical motor		Model			Y132M-4B5
			Output(kW)			5.5
	Working pressure(MPa)					25
	Elevating cylinder		Model			YG160/110*1600
			Stroke(mm)			1600
			Install distance(mm)			2100
			Cylinder diameter(mm)			160
			Diameter(mm)			110
			Max. elevating force(t)			50
Radius-changing mechanism	Electrical motor		Model			BF120-4/8/24
			Output(kW)			5/2.5/1
			Rotation speed(r/min)			1370/700/200
	Steel cable speed		Low speed(m/min)			9.5
			Medium speed(m/min)			30
			High speed(m/min)			60
	Electromagnetic break		Working pressure			24V.D.C
	Steel cable		Model			6*19-9.3-150-Ⅰ- light-right cross

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