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QTZ3509 3ton Small Internal Climbing Tower Crane,0.9ton Tip Load

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Brief Introduction:

1. Ranging from QTZ31.5 to QTZ315, this series tower crane is among our leading products. With their working radius varying from 38m to 70m, QTZ tower cranes are famous for their large operating ranges, varied working methods and wide uses.

2. Internal climbing tower crane install inside of buildings, so the span of the tower crane is small, namely the boom can be short, do not take up the outer space of building. The internal climbing tower crane use buildings to climb, the climbing height is not restricted and the tower crane is lower. So the whole structure is light and low cost.

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3. It is original in design, reliable in operation and satisfactory in shape.

4. Equipped with all necessary safety devices, these cranes show a good speed-control capacity, satisfactory operating stability and high work efficiency.

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5. They are widely applied for the construction of high-rise hotels, resident buildings, high-rise industrial buildings, large-span factory buildings and tower like buildings like tall chimneys.

6. They are widely applied for the construction of high-rise hotels, resident buildings, high-rise industrial buildings, large-span factory buildings and tower like buildings like tall chimneys.

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Standard Model Specification:

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Model | QTZ31.5(3509) Tower Crane |
Type | Internal climbing |
Rated Lifting Moment(KN.m) | 315 |
Rated Loading Capacity(t) | 3 |
Max. Lifting Load(t) | 3 |
Tip Load(t) | 0.9 |
Mast section height(m) | 29 |
Span(m) | 38 |
Working range(m) | 3 to 38 |
Slewing speed(r/min) | 0.7/0.35 |
Trolley peed(m/min) | 24.6/16.5 |
Power supply | 380V/50Hz or according to client& acute;s requirements |
Electric switch box | Schneider |
Hoisting speed(m/min) | 46/32/5.2 |
Main Material(mm) | 125*10/angle steel /Q235B |
Mast section(m) | 1.5*1.5*2.2 |
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Our Service
If the buyer needs help in the period of fixing, the seller will send one technician to the buyer’s place to guide the installation until the crane installation is completed, but no more than 15 working days The buyer is in charge of the visa, round-trip tickets, accommodation.


The buyer shall pay 50-80 US dollars every day to the technician as allowance.
The seller is not responsible for the maintenance of the vulnerable components, but can supply free replacement together with the crane.


If the buyer operates the products confirming to the requirements in the service manual, non- vulnerable parts accrues problem found the manufactory will help buyer mend or change the broken accessories within one year.


The seller is not responsible for any accident or damage to the tower crane caused by user’s failure to do regular maintenance or to follow the safety procedures provided in Manual.
We promise that any of your inquiry will be respond in 24 hours!

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Produce process of Small Internal Climbing Tower Crane

Raw Material - Cutting - Welding - Shot Blasting - Assembling - Painting

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