Tower Crane TC7021 QTZ250 New Mast Section

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$30,000.00 - 80,000.00 / unit
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China main port
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TT or LC
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1 unit
Supply Capability:
30 unit/month

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Item specifice:

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

Product Description:

Detail of Tower Crane


Feature:Tower Crane 


Model Number:TC7021(QTZ250) 

Place of Origin: China (Mainland)       

Brand Name: CMAX     

Certification: ISO,CE 

Warranty: 1 Year       



Main Features of Tower Crane


1) This series of tower cranes, ranging from QTZ40 to QTZ400 has a horizontal jib frame, a jib-trolley radius-changing mechanism and a hydraulic self-raising mechanism. It is original in design, reliable in operation and satisfactory in shape. Equipped with all necessary safety devices, these cranes show a good speed-control capacity, satisfactory operating stability and high work efficiency. They can be widely used for the construction of high-rise hotels, residential buildings, high-rise industrial buildings, large-span factory buildings and tower-like buildings like tall chimneys.


2) It has high working speed, good speed-adjusting performance, steady operation and high efficiency. Three-speed motor and mono-speed ratio decelerator are applied in the lifting struction, which enables heavy load low speed and light load high speed.

3)The range-change structure drives the trolley moving on the horizontal crang jib, with good positioning performance. Planet gear decelerator is applied in the circumgyrating structure, together with moment-limiting hydraulic coupler, which can relize high load capacity, steady starting and reliable operation.


4) The crane has complete set of safety devices, which can guarantee the safe and high efficienct operation. The crane is equipped with lifting height limiter, trolley ranging limiter, moment limiter, weight limiter etc..


5)The cranehas scientific layout and handsome appearance. The drivers cab is set independently on one side, with good vision field. It creates a good working environment for the operator.


Specification of Tower Crane 

Tower Crane TC7021 QTZ250 New Mast Section

Tower Crane TC7021 QTZ250 New Mast Section

Tower Crane TC7021 QTZ250 New Mast Section 



 Images of Tower Crane

Tower Crane 4808 40T.M New Mini Crane in China 

Tower Crane Main Section TC5613 in China

Tower Crane 4808 40T.M New Mini Crane in China

Tower Crane Max. lifting Weight 10T  in China

Tower Crane Max. lifting Weight 10T  in China


FAQ about Tower Crane


Q: What serice you could provide?

A: Providing timely delivery, standby engineers are ready to slove any of your problem

    Providing all-embraced warranty of products quality, worksite installation guidance

    Providing ample spare parts and training of operation and maintenance

    Engineers have more than 20 years' experience in tower crane, ready to solve any of your  problems.


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.


Q: Can you equip with light on  tower crane  jib, monitor, remote control and anemometer?

A: Sure. All of these could be provided with extra cost upon the clients' requirements. But according to general practice, remote control is not suggested because most of the operator feedback operation in the cabin will provide a wide working view.



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Q:Does taichi use the animal fists, crane,monkey,dragon,tiger, ect?
The answers you get from the people are perfect. However, you have a misconception about 'animal' movements but you are not the only one in this forum. There are two aspects that one need to remember as far as CMA is concerned. The physical movements mimicking an animal (real or imaginery) movement is one aspect that some schools incorporate and schools are named after the chosen animal, e.g. Tiger and Crane, Black Tiger, White Crane, etc. The second aspect is the adoption of the 'essence' of the animal, for instance, the 7-Star Praying Mantis' Xiao Hu Yan fist set, which adopts the ferocity of the Tiger (Hu), and the swiftness of the Swallow (Yan), and the whole set has no tiger claw hand movements, only the praying mantis claws are apparent. The adoption of the essence of the animals is more prevalent amongst Northern CMA, e.g. Tong Bei Chuen, adopts the fighting style of the White Ape (legend said that the founder was taught by a white ape), but the fist sets have no ape-ing around whereas, the Southern CMAs prefers the identities of the animals on the hand-movements, and thus, we have tiger-claws, leopard punch, white crane flaps and beak, eagle claws, etc. Some schools will incorporate the sound of roaring in their tiger forms. You asked about Taiji which I know a little. There are these movements called the White Crane stretches its wings, Bai He Liang Chi, Wild Horse separates the mane, Ye Ma Fen Choong, Golden Cockerel standing on one leg Jin Che Du Li, are some animal 'fists' if you can find in the more familiar Wu-style taijichuan. But, when you go into Ma-family taijichuan, there are 10-animal movements, but still, as said, no tiger claws in its tiger-movements; only the essence of the animals are in the set. So, I suppose what I have given you should answer your question somewhat.
Q:Calculate the tower crane gantry crane
Is building gantry crane crane, gantry crane is generally used for the port, port crane. Can not be regarded as the tower crane.There are several common types of cranes: overhead cranes, gantry cranes, port cranes, automobile cranes, tower cranes, etc..Gantry crane is a medium and small cantilever crane with simple Longmen.
Q:Japanese 1000 paper cranes?
I think it's a one time deal. You don't have to string them. You have as long as it takes. Look up Sadako Sasaki. She was a 12 year old Japanese girl who tried to fold 1000 cranes while in the hospital in the 1950's. She had A bomb disease, also know as leukemia. She got it because of the bombing of Hiroshima as a baby. She died after only making 650 or so cranes. It's a very good true story though.
Q:What is the velocity of the crane given...?
I don't remember ever doing a problem like this, but I will try to solve it. P = W/Δt, P = Fd/Δt P = Fv Force required to lift the 142 kg object; F = 142 * 9.8 F = 1391.6 N Therefore; P = Fv 500 = 1391.6*v v = 0.359 m/s So velocity of the crane is 0.359 m/s. Is that right?
Q:need a 5 ton jib crane design with drawing please help, boom 12ft hub 16ft?
I can design for you
Q:Overlord 2: need help getting blue minions with crane thing.?
Found the answer!:) By that point, if you did everything right you should have 8 blue minions. Put 6 of them on the crane and 2 of them(with a guard marker) in the middle where you ar gonna drop the ones from above. Then when you drop them, the ones guarding will pick them up and heal them.:) P.S.A tip, if you want the crane to come back slower don't remove all the minions from it, just remove 2 and the rest will slow it down. Hope this helped, have fun.:)
Q:Is Fireplace Crane a modern term for the swing-out metal arms that hang over a fireplace...?
Apparently that IS what they were called. Who knew? I would have guessed something a little more poetic like Dragon's Tail because it's long and straight, swings on a pivot and frequently has notches along to top for latching the bails of cooking pots and the like. Crane sounds so... so... ordinary.
Q:how to do tower crane maintenance?
Tower cranes in construction is being inspected as part of everyday maintenance. Usually, Safety In charge or a mechanical engineer do the inspection on site. Some pointers for inspection are: 1. Machine checking including motor 2. Emergency break 3. Lifting cable checking 4. Power panel 5. others Not only the tower crane is being checked, the operator and rigger also attends daily safety toolbox to update themselves on daily safety hazards on site
Q:Is there a crane lifting chart where I can enter info. to determine what size crane I need, if so where?
the 1st answerer, Irv S, is right. You need to call a craning service. They should be able to give an estimate for crane size based on what you tell them. You will need to know what your Load weighs. How high in the air the crane will have to lift it. ....Putting a swimming pool in the back yard is completely different ....than putting that same swimming pool up on top of a 15 story ....building. How close to the Load can the crane park? Or how far you need the LOAD moved. What a crane can lift, even if it a 100 ton crane is based on how far the crane has to reach to pick up the load and how much the crane has to rotate to place the load. The angle the crane boom goes to, etc. Our 15 ton PH crane can lift 30 thousand pounds at 10 feet from the Turning center. And only a 1,000 pounds or less if the boom is fully extended with the Jib on, that is 125 feet away from the turning center of the crane. Distance is critical! They will probably need to see the work site to give a really accurate answer. Wingman
Q:why do siberian crane migrate in india?
The Siberian Cranes nest in western Siberia . During Winter season in Siberia , they migrate to India which is their wintering ground.The migration route stretches for 4000 miles. Their resting place at the time of migration is the Lake Ab-i-Estada in Afghanistan. The Kaladeo Ghana National Park or the Bharatpur National Park has been declared a world heritage site because the Siberian Crane traverses nearly half of the globe to reach it. The Siberian Crane is presently an endangered species. Larger numbers of birds have been hunted down over the years especially when they undertake the perilous journeys across the Himalayas to reach the wet land. They are shot down in Pakistan to be gifted to friends and relatives. This has led to a severe decline in the number of Siberian Cranes in the world. The immediate need of the hour is to provide safety to the Siberian cranes along their migration route. This popular visitor has not been seen in the last two years in India. The last pair of Siberian Cranes which had made the Bharatpur Bird Sanctuary their seasonal home in the year 2002 was not seen in the year 2003. Their absence is indeed painful and one of the aims of the Crane foundation is to bring back the Siberian Crane to India.

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