Tower Crane TC7021 Large Cranes Leg Base

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Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 1 unit

Supply Capability:: 30 unit/month

Option:: TC7021

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Product Details
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Item specifice:

Maximum Lifting Weight:	12T	Maximum Lifting Height（M）:	200M	Rated Loading Capacity:	2.1M
Span:	70M	Rated Load Moment:	250T.M

Product Description:

Detail of Tower Crane

Feature:Tower Crane

Condition:New

Model Number:TC7021(QTZ250)

Place of Origin: China (Mainland)

Brand Name: CMAX

Certification: ISO,CE

Warranty: 1 Year

Application:Building,Construction,Industrial

Main Features of Tower Crane

Our tower crane is self-erecting and wall-attached tower crane, in addition to it's advanced parameters, reliable performance, well-looking appearance, and excellent quality.

It has characteristica such as long boom, largeworking coverage, hydraulic rising, and tandem mounted tower body.

It's design idea shows advantages including simple structure and good applicability, convenient maintainability, and lower price at the same time to emphasize meeting the requirement from construction units at different levels.

It's lifting height is obviously increased thanks to its self-erecting and wall attached function.

Specification of Tower Crane

Technical Sheet for TC7021

Free standing height (m)		50
Max height with attachment (m)		200
Working range can be adjusted（m）		40、45、50、55、60、65、70
Min working range（m）		2.5
Max lifting capacity（t）		12
Tip load @ 70m（t）		2.1
Hoist mechanism (VFD+PLC)	Falls	2		4
	Lifting capacity（t）	0－3	0－6	0－6	0－12
	Speed（m/min）	0－80	0－40	0－40	0－20
	Motor	YZPBF250-4-55KW
Trolleying mechanism (VFD+PLC)	Speed（m/min）	0-56
	Motor	YPBE132M-4-7.5KW
Slewing mechanism (VFD+PLC)	Speed（r/min）	0-0.6
	Motor	YLEW112M-6-120N.M×2
Climbing speed（m/min）		0.5
Counterweight（t）		23.6
Mast section size（L×W×H）m		2×2×3
Working temperature		-40－+60℃
Total power (KW)		95
Power supply requirement (KVA)		255KVA for generator
Cable type ( within 30 meters from site power source to lower electric box of tower crane )		50mm2（3+2, 5 cores）
Startup voltage & current		380V×95%=361V 260A
Rated working voltage & current		380V 146A

Loading diagram：

70m jib length：

R			18	22	24.5	27.7	28.3	30	32	35	37	40
a=2 (t)	6t—31.8m								5.96	5.35	5.00	4.54
a=4 (t)	12t—17.8m		11.29	8.99	7.94	6.86	6.69	6.23	5.76	5.15	4.80	4.34
R	42	45	47	50	52	55	57	60	62	65	67	70
a=2 (t)	4.27	3.91	3.69	3.40	3.23	2.99	2.84	2.64	2.52	2.35	2.25	2.10
a=4 (t)	4.07	3.71	3.49	3.20	3.03	2.79	2.64	2.44	2.32	2.15	2.05	1.90

65m jib length：

R			20	22	25	27.7	30	31.8	32.4	35	35.9	37
a=2 (t)	6t—35.9m											5.79
a=4 (t)	12t—19.23m		11.49	10.32	8.92	7.92	7.21	6.72	6.57	5.99	5.80	5.59
R	40	42	45	47	50	52	55	57	60	62	65
a=2 (t)	5.27	4.96	4.56	4.31	3.99	3.79	3.52	3.35	3.13	2.99	2.80
a=4 (t)	5.07	4.76	4.36	4.11	3.79	3.59	3.32	3.15	2.93	2.79	2.60

60m jib length：

R			22	25	27	30.6	31.8	32.4	35	37	40
a=2 (t)	6t—39.85m											5.98
a=4 (t)	12t—21.35m		11.60	10.05	9.21	7.96	7.61	7.45	6.79	6.35	5.78
R	42	45	47	50	52	55	57	60
a=2 (t)	5.64	5.18	4.91	4.55	4.33	4.03	3.85	3.60
a=4 (t)	5.44	4.98	4.71	4.35	4.13	3.83	3.65	3.40

55m jib length：

R		23	25	27	29	32.8	33.7	34.3	35	37	39
a=2 (t)	6t—42.70m
a=4 (t)	12t—22.87m	11.92	10.86	9.96	9.18	7.96	7.71	7.55	7.37	6.90	6.48
R	41	43	45	47	49	51	53	55
a=2 (t)	6t—42.70m	5.95	5.63	5.34	5.08	4.84	4.61	4.40
a=4 (t)	6.10	5.75	5.43	5.14	4.88	4.64	4.41	4.20

50m jib length：

R			24		26	28	30	33.1	34.7	35.4	38
a=2 (t)	6t—43m
a=4 (t)	12t—23.04m		11.46		10.48	9.63	8.90	7.94	7.51	7.34	6.74
R	40	42	44		46	48	50
a=2 (t)	6t—43m			5.84	5.53	5.26	5.00
a=4 (t)	6.34	5.97	5.64		5.33	5.06	4.80

45m jib length：

R			25	27	29	31	33.6	34.9	35.6	37
a=2 (t)	6t—43.75m
a=4 (t)	12t—23.42m		11.16	10.23	9.43	8.74	7.96	7.61	7.44	7.10
R	39	41	43	45
a=2 (t)	6t—43.75m			5.80
a=4 (t)	6.67	6.28	5.92	5.60

40m jib length：

R		24	26	28	30	32	34.1	35.1	35.8	38	40
a=2 (t)	6t—40m
a=4 (t)	12t—23.8m	11.90	10.88	10.01	9.25	8.59	7.98	7.71	7.53	7.02	6.60

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FAQ about Tower Crane

Q: What kind of steel used for tower crane ?

A: Normally, as for the main force bearing steel structure, Q345B is adopted; as for the assistance force bearing steel structure Q235B is adopted. All of the raw material is outsourced from qualified steel factory in China.

Q: What about our tower crane warranty?

A: Usually there is one-year quality warranty including main electronic parts (not including consumable parts). There are consumable spare parts together with whole machine and normally they are enough for one year.

Q: What is 3 main mechanism of the tower crane ?

A: there are trolleying mechanism/ slewing mechanism/ hoisting mechanism.

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Q:If so, would you mind finding me a site that will teach me how to either with a good video or an easy-to-follow explanation because i tried many sites and i just cannot understand clearly enough. I get so far and then i can't tell what is happening in a step, and i can't do it.If you wouldn't mind to find me a site that you know will help, since you can make them, it would be greatly appreciated.Thanks.: Video okorder /

Q:have you noticed that there has been an exceptionaly high volume of cranes falling over in the U.S.A. this year? 2 cranes went down this week, one in Texas killing a man. seems like there has alot of this lately, what the hell is going on with the cranes? ever night i turn on the news its like a deadly crane accident took place today . thanks.: Accident Reports Received for year 2007: 347 Deaths for 2007: 176 Accident Reports Received for year 2006: 314 Deaths for 2006: 109 Accident Reports Received for year 2005: 231 Deaths for 2005: 127 Accident Reports Received for year 2004: 287 Deaths for 2004: 142 Accident Reports Received for year 2003: 269 Deaths for 2003: 138 Accident Reports Received for year 2002: 171 Deaths for 2002: 96 Accident Reports Received for year 2001: 161 Deaths for 2001: 107 Accident Reports Received for year 2000: 184 Deaths for 2000: 74 (It gets really scary when you look at the increase of deaths in just a few short years.)

Q:They like fly on peoples face, i dont know why they come up on the face and it creeps me out, i have no idea why it comes inside of the house in the first place?: I hate them too! They are the only animals I don't like. I know they are harmless, but they creep me out - as you say, they just fly at you and try to dangle all those horrible long spindly legs on your face, yuk!! I personally find the best way to get rid of them is to whack them with a rolled up newspaper or magazine. By the way, My Evil Twin is mistaken about their feeding habits. Crane flies do not eat mosquitoes - most do not eat at all in their adult form, since they only live a day or a couple of days at most. They simply mate and then die. If they do feed at all, it's just sipping some nectar from flowers. They do not have mouthparts capable of eating other insects.

Q:First Summary gets best answer...thanks!: The City is covering itself by shifting the blame form a negligent city inspector to the crane company by charging its owner with Manslaughter Charges. This is typical of civil service personal who forget who they work for (We the People).

Q:I read this book recently and i got emotional over it. It relates so much to my life and i think maybe i know what my dad was thinking before he died. I was just wondering what was your reaction after reading this short story?: This book gave me lots of hope. I really loved to hear about Sadako and how she folded so many cranes. I wanted to believe that she would finish the paper cranes and she would get better. When she died in the ending it was very sad. Someone with so much hope and motivation doesn't deserve to die. The book also made me think a lot about why Sadako was sick in the first place. She was only two-years-old when the Americans dropped the bomb on Hiroshima, but she was still eventually killed from it. This book shows the long-lasting effects war has on a country and its people. It really makes you think twice about war. I really enjoyed reading this book. It was an easy read that I had a hard time putting down. Every chance I got I read this book! While it was sad in the end, it was great to hear about Sadako's life and how her friends finished her paper cranes for her. The plot was interesting and exciting. I really like the main character too. Sadako was a very brave, strong person that I wish I was more like. She woke up every day with the will to live and that gave me a lot of hope.

Q:are parts availble for shop crane? Hydraulic ram plunger o rings has split....need part?: may have one, or try a tractor supply shop in your area. You can try matching the ring at an auto parts store that has balk parts behind the counter.

Q:I think I'm going to try white crane kung fu. This is the club I'm going to which does three lessons in kung fu per week and 2 in sparring.The annual cost is ?40. It says it will take a minimum of 10 years to get a black sash.What are your views on this style? Is it effective and worth my time and does this club look good? Thanks: White Crane Kung Fu combines protection and assault and makes use of the two gentle and not basic power. It additionally emphasizes organization yet evasive footwork. that's an on the spot, linear and deceptive martial paintings. this actual device is named Fei He or Flying Crane. Flying Crane makes use of the two extreme and occasional kicks yet has a marked decision for speedy hand innovations. It stresses empty-hand as properly as weapons preparation, 2-person instruments, self-protection drills and loose-sparring.

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