What Is A Small Mobile Tower Crane
Small mobile tower crane, also named self‑erecting portable tower crane, is a compact, foldable lifting machine designed for small‑to‑medium‑size construction sites. Different from conventional fixed tower cranes, it adopts a folding mast and jib structure, can be transported as an integrated unit by trailer, and completes erection and dismantling via built‑in hydraulic system without auxiliary crane assistance.
Most models are bottom‑slewing design, equipped with hydraulic outriggers and ballast counter‑weights. It does not need large‑scale poured concrete foundation. After arriving at site, operators can finish setup within several hours and get ready for lifting work.
Main components: folding mast, folding jib, slewing mechanism, hoisting & trolley mechanism, hydraulic outriggers, ballast counter‑weights, PLC control system, wireless remote‑control system, full‑set safety protection devices.
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Main Applications & Working Scenarios
1. Residential & Villa Construction
Perfect for villas, townhouses, low‑rise apartment buildings. Hoist bricks, concrete blocks, steel bars, roofing materials and precast components. Especially fit for narrow urban infill construction sites with limited space.
2. Building Renovation & Retrofit Projects
For old‑building renovation, exterior wall reconstruction, roof maintenance. Avoid high‑cost repeated rental of mobile cranes for continuous material lifting tasks.
3. Small‑Scale Commercial Projects
Small shops, office buildings, community facilities, small‑scale factory workshops. Solve vertical material transportation in sites where traditional large tower cranes cannot enter due to space limitation.
4. Agricultural & Rural Construction
Farmhouse construction, barn building, rural infrastructure. Low site requirement, easy relocation between different job locations.
5. Temporary & Short‑Term Construction Sites
Short‑term projects, precast component yard, temporary material hoisting. Fast erection and dismantling, easy to move to next site after project completion.
Technical Parameters
| Self-Erecting Intelligent Tower Crane Main Technical Parameters | ||||||
| Category | Item | Unit | JFYT2527-30 | JFYT2527-20 | JFYT2227-40 | JFYT1720-10 |
| Outline Dimensions Parameters | Overall length | mm | 14300 | 14300 | – | 10320 |
| Overall width | mm | 2200 | 2200 | – | 2210 | |
| Overall height | mm | 3250 | 3200 | – | 3040 | |
| Axle base | mm | 6850 | 6850 | – | 5340 | |
| Front tread | mm | 800 | 800 | – | 680 | |
| Rear axle/rear tread | mm | 1950 | 1950 | – | 1870 | |
| Weight Parameters | Dead weight in travel state | Kg | About 20000 | About 18500 | – | 14500 |
| Front axle load | Kg | 11000 | 10000 | – | – | |
| Rear axle load | Kg | 9000 | 8500 | – | – | |
| Max. travel speed | Km/h | 15 | 15 | 15 | 15 | |
| Min. Turning radius | m | 18 | 18 | – | 13 | |
| Min. ground clearance | mm | 300 | 300 | – | 230 | |
| Outrigger span in working state | m | 4.2X4.2 | 4.2X4.2 | 4.2X4.2 | 3.5*3.5 | |
| Turning radius at swing table tail | m | 2.7 | 2.7 | – | 2.52 | |
| Performance Parameters | Max. lifting height | m | 23 | 23 | 22 | 16 |
| Max. lifting capacity | t/Kg | 2.9t | 2.0t | 4000Kg | 1t | |
| Max. working radius | m | 26 | 26 | 27 | 18 | |
| Min. working radius | m | 6 | 6 | – | 5 | |
| Lifting speed | m/min. | 13/26 | 13/26 | 9/36/56 (2times) / 4.5/18/28 (4times) | 16 | |
| Lifting motor power | kw | 11/7 | 11/7 | 15/15/4 | – | |
| Swing speed | rpm | 0.25/0.8 | 0.25/0.8 | 0.25/0.6 | 0.6 | |
| Swing motor power | kw | 2.2 | 2.2 | 2.2 | – | |
| Luffing speed | m/min. | 20/40 | 20/40 | 20/40 | 17 | |
| Luffing motor power | kw | 2.4/1.5 | 2.4/1.5 | 2.4/1.5 | – | |
| Erecting time | min. | 10 | 10 | 10 | 6 | |
| Folding time | min. | 8 | 8 | – | 6 | |
| Total power | KW | – | – | – | 13.9 | |
| Hydraulic System Parameters | Hydraulic system working pressure | MPa | 28 | 28 | 28 | 28 |
| Oil tank capacity | L | 240 | 240 | – | 140 | |
| Hydraulic station electric power | KW | 7.5 | 7.5 | – | – | |
Advantages
- High Mobility & Integrated Transport Whole‑machine foldable, can be towed by standard trailer for long‑distance transportation. No need to disassemble into many separate parts, saving transport cost and time.
- No Auxiliary Crane, Fast Erection & Dismantling Built‑in hydraulic system realizes automatic unfolding and locking. No high‑altitude work during installation. Can be ready for operation in several hours, greatly shorten site preparation cycle.
- No Heavy‑Duty Concrete Foundation Required Supported by hydraulic outriggers and ballast counter‑weights. Only flat solid ground is required, eliminates foundation pouring and curing period, reduces site cost and workload.
- Wireless Remote‑Control Operation Ground‑based remote control, operator has better working‑area visibility. No need for operator to climb into high‑altitude cabin, improves working safety and efficiency.
- Complete Safety Control System Equipped with overload protection, moment limit, height limit, amplitude limit, wind‑speed sensor, double‑lock hydraulic outrigger protection, PLC intelligent control. Automatically restrict dangerous actions to guarantee operation safety.
- Compact Footprint, Fit for Tight Sites Small occupation area, suitable for narrow urban lots, crowded construction sites where large tower cranes cannot be deployedAlibaba.co….
- Cost‑Effective for Small Projects Lower purchase, installation and maintenance cost compared with conventional large tower cranes. Ideal for repeated material lifting on small‑medium projects, better economic performance than frequent mobile‑crane hire.
Small Mobile Tower Crane VS Traditional Fixed Tower Crane
| Comparison Item | Small Mobile (Self‑Erecting) Tower Crane | Traditional Fixed Tower Crane |
|---|---|---|
| Transport Mode | Foldable whole‑machine trailer transport | Disassembled into many parts, multiple trucks required |
| Erection Requirement | Built‑in hydraulic, no auxiliary crane needed | Requires auxiliary mobile crane for assembly |
| Foundation | Hydraulic outriggers + ballast, no heavy concrete foundation | Requires large‑size reinforced‑concrete foundation |
| Setup Time | Several hours for full erection | Days for foundation curing + assembly |
| Lifting Capacity | 1‑4 tons, max height 18‑30 m | Large tonnage, high lifting height for high‑rise buildings |
| Site Adaptability | Compact, for narrow, small‑medium sites | Large footprint, for large‑scale high‑rise projects |
| Relocation | Easy to move between job sites | Hard to relocate, mostly fixed on one site |
| Best Projects | Residential, villa, renovation, small‑medium building | High‑rise buildings, large‑scale infrastructure |
We will customize a suitable mining or concrete solution for you.
FAQ
Q1: What is the lifting capacity of small mobile tower crane? A: The mainstream models are 1‑4 tons. Max lifting height is 18‑30 m, maximum working radius can reach 37 m, selected according to actual project demand.
Q2: Does small mobile tower crane need concrete foundation? A: No. It adopts hydraulic outriggers and ballast counter‑weights. Only flat solid ground is required. No poured concrete foundation is needed, which saves site construction cost.
Q3: Do we need another crane to erect small mobile tower crane? A: No. It is self‑erecting by built‑in hydraulic system. No auxiliary crane is required for erection and dismantling, and no high‑altitude work during installation process.
Q4: Can small mobile tower crane work on uneven ground? A: Yes. Adjustable hydraulic outriggers can level the machine on slightly uneven ground. The ground must have sufficient bearing capacity to support the whole machine and counter‑weights.
Q5: What is the difference between small mobile tower crane and mobile truck crane? A: Small mobile tower crane is designed for continuous repeated vertical material lifting with large working radius. Mobile truck crane is for occasional heavy‑load hoisting. For long‑term continuous material handling on building sites, small mobile tower crane is more cost‑effective.
Q6: Is wireless remote‑control standard for small mobile tower crane? A: Most models are equipped with wireless remote‑control for ground operation, improving safety and visibility. Some models support optional cabin operation as alternative.
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