Topless Tower Crane QTZ125 is a Cranes product. Key specs — Origin: China.
Product Description
Topless tower crane QTZ125 falls within upper-swing hydraulic climbing tower crane,which is operated by computer from related the steel structure a element to mechanisms and conventional design operations. And the max radius is 3-60m,freestanding height is 50m,attaching height is 200m,the rated load moment is 1250KN.m,tip capacity is 1.5t. Our standard section is 2.0m*2.0m*3.0m, main material: 200*200*20 maganese steel, hoisting mechanism adpots three-speed motor,having three kinds of working speed meets different demands!
Topless tower crane QTZ125 parameter table
 
| Tower crane technical parameters | |||||||||||||||||
| Grade | U5 | Wind grade at the max. installation height when assembly, disassembly, hoisting or declining | ≤4 | ||||||||||||||
| Load state | Q2 | Wind grade with working state | ≤6 | ||||||||||||||
| Working grade | A5 | Wind grade without working state | ≤11 | ||||||||||||||
| Height (m) | Freestanding type:60 | Attaching type: 200 | |||||||||||||||
| Max. load capacity(t) | Quadruple rate | 10 | Double rate | 5 | |||||||||||||
| Radius(m) | Max. radius | 60 | |||||||||||||||
| Min. radius | 2.8 | ||||||||||||||||
| Rated load capacity at max. radius(t) | 1.5 | ||||||||||||||||
| Hoisting mechanism | Speed (m/min) | a=2 | 0-100/0-50 | ||||||||||||||
| a=4 | 0-50/0-25 | ||||||||||||||||
| Motor type and power | 70RCS25 51.5KW | ||||||||||||||||
| Slewing mechanism | Slewing speed | Motor type | Power | ||||||||||||||
| 0.62r/min | YLEW112M3-6-B5 | 95N.m | |||||||||||||||
| Derricking mechanism | 120JXL 120N.m | ||||||||||||||||
| Single wire rope speed: 0-63m/min | |||||||||||||||||
| Climbing mechanism | Speed | Rated working pressure | Power | ||||||||||||||
| 0.5m/min | 25MPa | 7.5KW | |||||||||||||||
| Counter weight | Jib length(m) | 60 | 55 | 50 | 45 | 40 | |||||||||||
| Weight(t) | 16.6 | 15.3 | 14.0 | 12.7 | 11.4 | ||||||||||||
| Total power | 53KW(not include illumination, heating) | ||||||||||||||||
| Power supply | ~380V(±10%) | Frequency | 50Hz | Working temperture | -20℃~40℃ | ||||||||||||
 
Load Diagram: 
 
Jib (m) | Fall | R(Cmax) m | C(max) t | 20 | 25 | 30 | 35 | 40 | 45 | 50 | 55 | 60 |
60 | IV | 14.6 | 10.0 | 6.99 | 5.35 | 4.25 | 3.46 | 2.87 | 2.42 | 2.05 | 1.75 | 1.50 |
II | 26.37 | 5.0 | 5.0 | 5.00 | 4.25 | 3.46 | 2.87 | 2.42 | 2.05 | 1.75 | 1.50 | |
55 | IV | 15.3 | 10.0 | 7.41 | 5.70 | 4.52 | 3.70 | 3.08 | 2.60 | 2.21 | 1.90 |   |
II | 27.70 | 5.0 | 5.0 | 5.00 | 4.52 | 3.70 | 3.08 | 2.60 | 2.21 | 1.90 |   | |
50 | IV | 15.7 | 10.0 | 7.62 | 5.85 | 4.66 | 3.82 | 3.19 | 2.69 | 2.30 |   |   |
II | 28.38 | 5.0 | 5.0 | 5.00 | 4.66 | 3.82 | 3.19 | 2.69 | 2.30 |   |   | |
45 | IV | 16.5 | 10.0 | 8.08 | 6.23 | 4.97 | 4.09 | 3.42 | 2.90 |   |   |   |
II | 29.87 | 5.0 | 5.0 | 5.00 | 4.97 | 4.09 | 3.42 | 2.90 |   |   |   | |
40 | IV | 17.2 | 10.0 | 8.45 | 6.52 | 5.22 | 4.30 | 3.60 |   |   |   |   |
II | 31.03 | 5.0 | 5.0 | 5.00 | 5.0 | 4.30 | 3.60 |   |   |   |   |
 
Advantage
1. AC contactor,thermprl protector adopt Schneider which is high quality product,stable and reliable in performance
2. The mechanisms adopt the product the products of professional manufacturer,stable and reliable in operation.
3. The first domestic robot welding production line has achieved the main welding quality and reached the international advanced level.
4. Steel structure parts all achieve impeller blasting,improve the surface hardness of steel,enhance the coating adhension,extend equipment useful life.
5. Mast sections adopt split structure, convenient for transportation and storage, save the long distance freight
6. The main chord of mast section adopts Q345B material, fine adaptability to environment
7. The mechanism adopt foreign advanced technical products, reliable in performance
8. High working speed and efficiency, great speed-adjustment performance, and stable running