| max .load : | |
|---|---|
| jib length: | |
| free standing height: | |
| max anchorage height: | |
| mast size: | |
| Availability: | |
| Quantity: | |
QTZ40(4808) 4ton Topkits Tower Crane of Construction
TAVOL
84262000
Product Description
1-Product Description:
For mid-size construction projects, the QTZ40(4808) 4-ton topkit tower crane gives you big-crane reliability at a mini-crane cost. It lifts up to 4 tons with a 48 m jib and 120 m anchorage height, with creative compact design that's easy to transport and quick to erect on site. Frequency-conversion speed modulation on hoisting, rotation, and trolley mechanisms means stable braking, accurate positioning, and less concussion — smoother lifts, safer loads. PLC control with automatic fault diagnosis and alarm, plus torque, weight, height, slewing and amplitude limiters, keeps operators protected. You get dependable lifting for your construction site without overpaying — more work efficiency, less risk.
Tavol Tower Crane Core Advantages
High-Strength Structural Steel
Content: Built with premium Q345B/Q355B high-strength steel. Our mast sections and jibs undergo rigorous stress testing and robotic welding, ensuring exceptional structural stability and a longer service life in harsh construction environments.
Advanced Control & Safety Systems
Content: Equipped with an integrated black-box monitoring system and high-precision limiters for load, radius, and height. Our intuitive control system ensures smooth lifting movements and multi-layered safety for zero-accident operations.
Optimized Modular Design
Content: Features standardized mast sections and a quick-connection design. This modularity reduces transportation costs and significantly shortens the time required for site installation and dismantling, maximizing your project’s uptime.
Reference Pictures:

2-Specification
Series | QTZ40 | |
Standard Model | 4808 | |
Max. Lift Load | 4t | |
Tip Load | 0.8t | |
Free Standing Height | 29m | |
Max. Anchorage Height | 120m | |
Jib Length | 48m | |
Mast size | 1.5×1.5×2.2m | |
Lift Mechanism | Lifting Speed | (a=2)70/35/9 m/min (a=4)35/17.5/4.5m/min |
Lift motor | 15/15/4kw | |
Trolley Mechanism | Trolley speed | 39/26 m/min |
Trolley Motor | 1.5/2.2kw | |
Slewing Mechanism | Slewing speed | 0.72r/min |
Slew Motor | 3.7kw | |
Jacking Mechanism | Jack climbing speed | 0.4m/min |
Jack climbing motor | 4kw | |
Voltage | 380V/50Hz/3P | |
Luxury Operate Cabin, Schneider Electric Parts | ||
4-Safety Features
1 | Torque limiter | Control torque, it will warns when lifting weights reach to 90% of rated lifting torque. When reach to 110% of the rated lifting torque, it will limit rising upwards and trolley. |
2 | Weight limiter | Control the maximum lifting capacity, lifting weight reach to 40% of the rated capacity, limit high-speed lifting; lifting weight reach to 110% of the rated capacity, limit the lifting up |
3 | Height limiter | Control the lowest and highest extreme position of lifting hook |
4 | Slewing limiter | Control the extreme turns number of turn left and right |
5 | Amplitude limiter | Control trolley limit position of inward and outward |
6 | Overload protection | If the material is over the capacity, the crane will give a sharp warning for protection itself |
7 | Emergency brake | If the operation staff encounter some emergency situation, we could start the emergency brake system to protection the related treasure |
8 | Control Method | Room control or remote control to avoid any injury to the operation staff |
9 | Main lifting motor | with thermal protection and currency protection |