• Tower Crane TC7021 Construction Equipment Sales Building Machinery System 1
  • Tower Crane TC7021 Construction Equipment Sales Building Machinery System 2
  • Tower Crane TC7021 Construction Equipment Sales Building Machinery System 3
  • Tower Crane TC7021 Construction Equipment Sales Building Machinery System 4
  • Tower Crane TC7021 Construction Equipment Sales Building Machinery System 5
  • Tower Crane TC7021 Construction Equipment Sales Building Machinery System 6
Tower Crane TC7021 Construction Equipment Sales Building Machinery

Tower Crane TC7021 Construction Equipment Sales Building Machinery

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Loading Port:
China main port
Payment Terms:
TT OR LC
Min Order Qty:
1 unit
Supply Capability:
5 unit/month

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Tower Crane TC7021 Description:

1.CMAX Tower Crane TC7021  is one of the main product of CNBM company, which have competitive price and excellent quality, suitable for all kinds of construction project and can work under all kinds of work condition.

2. Tower Crane TC7021 can adopts standard section hydraulic lifting and connecting, and can decide the crane height according to the actual height of the building, and at the same time the lifting capacity will not be affected.

3. Tower Crane TC7021 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.

4.Tower Crane TC7021  has complete set of safety devices, which can guarantee the safe and high efficienct operation of the equipment. The machine is equipped with lifting height limiter, dolly range-change limiter, moment limiter,weightlimiter,circumgyrating limiter,and so on. 

5.Tower Crane TC7021  has scientific layout and beautiful appearance. The operator's room is set independently on one side, with good vision field. It creates a good working environment for the operato.


Tower Crane TC7021  Parameter:

 Max. working range 70m, tip lifting weight 2.1T and Max. lifting weight 12T.

Hoisting mechanism fitted with three speed motor, stable braking and less shock when shifting.

Trolleying mechanism can provide two operation speeds.

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 @ 50m (t) 2.1


Tower Crane TC7021   Packaging & Delivery:

40HQ container

20~25days after deposit


Tower Crane TC7021Diagram:

Tower Crane TC7021 Construction Equipment Sales Building Machinery

Tower Crane TC7021 Construction Equipment Sales Building Machinery

Tower Crane TC7021 Technical Sheet:

Tower Crane TC7021 Construction Equipment Sales Building Machinery

Tower Crane TC7021 FAQ:

1.What is tower crane?

Tower crane is a modern form of balance crane that consist of the same basic parts. Fixed to the ground on a concrete foundation (and sometimes attached to the sides of structures as well), tower cranes often give the best combination of height and lifting capacity and are used in the construction site.

2. What is the meaning of the tower crane’s code?

Take Tower Crane TC7021 for example, the first two letters “TC” means Tower Crane, “70”means jib length is 70 meter, and the last two letter “21” means the tip load is :2.1 ton.

3. What is the principal to quote the right tower crane to the client?

First, we need to know clients’ requirements,for example, max lifting capacity, height, tip load and jib length.. Second, we need to know what the foundation requirement from the client is and Third if there are special needs. CNBM could suggest proposal according to clear data provided by the clients.

Q: What windproof devices should be set up for crane work?
Safety protection device and function of crane1. overload limiterIt is a safety guard for cranes to prevent overload, also called a weight limiter. The safety function of the utility model is that when the crane load exceeds the rated value, the lifting action is stopped, so as to avoid overloading. Overload limiters are widely used in bridge type cranes and elevators. Some boom type cranes (such as tower cranes and gantry cranes) use the overload limiter and the torque limiter together. Overload limiter has mechanical, electronic and many types.(1): mechanical drive ram through a lever and a spring cam, etc., when overloaded, hit the switch control rod and the lifting action phase, cut off the power source of hoisting mechanism, control the lifting mechanism to suspend operations.(2) electronic: composed of a sensor, an operational amplifier, to control the actuator and load indicator, display, control and alarm and other security functions in a body. When the crane is loaded, the sensor on the load bearing component is deformed, and the load weight is converted into an electric signal, and the value of the load is indicated by operation amplification. When the load exceeds the rated load, the power source of the lifting mechanism is cut off so that the lifting action of the lifting mechanism can not be realized.
Q: i have a 83 camaro crane cam 305 v 8 4brrl edelbrock carb and i just changed the carb from a quadrajet to the edelbrock....but i cant seam to get it running right as long as im out on the highway it runs great but when i stop at a stop light i have to rev it up to keep it running..i changed the plugs plug wires and the distributor but i heard you have to have a different kind of distributor to change from the quareajet ( will all of the plug in and stuff to a regular edelbrock carb..is this true??
the first thing to do is eliminate a vacuum leak problem. get someone to keep the car running and then spray some carb cleaner around the base of the carb. if there is a leak it will be obvious. make sure all lines are plugged or not leaking even if you have to isolate the carb to be sure. if the carb was used it could also be a stopped up idle circuit. eliminate all the simple stuff before snatching out the distributor. that may well be the problem, but on older vehicles a idle stall is usually, but not always,' associated with a vacuum leak or bad carb.
Q: What is a tower crane without a collector?
Without the collector, the main cable of the tower crane directly reaches the power distribution cabinet after turning.
Q: I have been doing a science projet and i cant find it anywhere
The wild Whooping Crane flock spends its summers in Wood Buffalo National Park in the Northwest Territories of Canada. They nest and rear their young there. During the fall season, the Whoopers migrate 2,500 miles south to Aransas National Wildlife Refuge in Texas where they spend the winter and early spring. There are currently 193 birds in this flock.
Q: in the short story open boat by stephen crane how does he define Fate?
Without doing your work for you, Crane is a naturalist. They believe nature works at random, and is completely unsympathetic to man's plight in the process. Hence, the oiler dies. He was probably the strongest one in the boat. So, how does that translate into the concept of fate?
Q: Are Crane Flies Venomous?
Crane flies are non-venomous and non-biting .It is a common myth that the daddy long-legs would be the most poisonous animal if only it knew how to use its poison, but this is false. There are 300 species in Britain with the commonest being the entirely harmless, if annoying, Tipula Paludosa. They are completely harmless and only live for around three days as adults.
Q: Trying to find an estimated weight for a mobiles crane with a 5 tonne capacity ?
It is not the weight of the crane alone that matters. But to some extend if the crane is light, this could create a torque when carrying a heavy load and the crane could collapse. Therefore I am speculating that inorder to lift 5Tonnes, the crane must be more than 5 tonnes to balance out the moments resulting in a torque The internal structure of bolts and trusses must be able to handle heavy loads and their are several calculations done to find each forces acting on the members of a truss. For eg: By using Pin Joint Analysis
Q: What did Stephen crane contribute to history?
I think his greatest contribution was The Red Badge of Courage. It was the most ealistic portrayal of a Civil War soldier written at the time; so real, in fact, that veterans swore the had fought alongside him during battle (Crane wasn't even alive during the war).
Q: We had a very large tree removed from beside our house. The crane parked in the driveway and caused four very large depressions and crushed concrete.
No. The driveway is NOT a covered structure. The standard homeowners policy specifically excludes driveways from coverage. But the contractor who brought the crane in, should be responsible for it.
Q: You know those big cranes that sometimes hang above constructed buildings. I usually thought a crane is used to build that crane but then how is that first crane that built the crane get there in the first place?
from the ground up

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