The telescopic boom structure allows smooth, quiet extension and retraction, making the SQS125G-5 exceptionally suited for vertical lifting and reaching elevated work zones. To ensure long-term durability in harsh outdoor environments, the entire boom assembly is constructed from industrial-grade high-strength steel and treated with a multi-layer anti-corrosion coating, including a durable epoxy primer and a weather-resistant polyurethane topcoat. This meticulous finish not only provides a professional appearance but also significantly extends the equipment's service life by preventing rust and structural degradation under heavy rain or intense UV exposure.
Engineered for consistent daily operations, this mobile crane delivers a maximum lifting weight of 5,000kg and a formidable lifting torque of 12.5 t.m. Operators will appreciate the continuous 360° slewing angle, which eliminates the need for frequent vehicle repositioning. This unrestricted rotation improves site flexibility and drastically reduces project turnaround times, allowing crews to place heavy materials exactly where needed with absolute precision and minimal ground disruption.
Operating at a rated hydraulic pressure of 20MPa with a recommended flow of 40 L/min, the hydraulic system is the beating heart of the crane. We utilize industry-recognized hydraulic valves and premium high-pressure hoses to guarantee precise load control and a remarkably low failure rate, even during high-frequency continuous operations. The deep, steady hum of the pump reflects its efficiency, while the 90L oil tank ensures optimal fluid temperatures, minimizing thermal wear and supporting long working shifts without unnecessary downtime.
Space is often at a premium on commercial truck frames. Requiring a mere 900mm of installation space, the SQS125G-5 integrates effortlessly onto various light and medium-duty truck platforms. We provide comprehensive chassis installation guidance to ensure an exact fit. Furthermore, the system supports flexible power access solutions, directly connecting via a standard Power Take-Off (PTO) or an independent power pump station, making it highly adaptable to your specific fleet requirements.
The straightforward telescopic boom structure inherently reduces mechanical complexity, translating to easier operation and lower maintenance overhead. To further protect your operators and assets, the crane can be equipped with an optional Load Moment Indicator (LMI) and an anti-rollover warning system. These smart safety controls provide real-time monitoring of the lifting status, offering visual and auditory alerts that ensure secure handling during heavy-load and high-altitude tasks.
For projects demanding extreme capacity, our heavy-duty folding boom model, the SQZ300A.4, delivers a massive maximum lifting weight of 14,000kg and a lifting torque of 30 t.m. This unit is specifically engineered for rigorous tasks such as erecting steel structures, positioning heavy industrial machinery, and handling large prefabricated concrete components. It serves as the ultimate solution for operations that require uncompromising strength combined with precise spatial maneuvering.
The SQZ300A.4 operates at a substantial rated hydraulic pressure of 28MPa with a recommended hydraulic flow of 60 L/min. This high-capacity setup delivers smooth, responsive, and pinpoint lifting control under immense strain. A large 180L oil tank acts as a reliable thermal buffer, supporting extended, high-intensity working cycles and drastically reducing the risk of fluid overheating during continuous, demanding operations.
The full 360° slewing angle empowers operators to position colossal loads with exacting accuracy without the need to constantly reposition the carrier truck. The articulated folding boom structure provides exceptional spatial flexibility, allowing the crane to reach over obstacles and articulate into confined industrial areas or active, congested construction sites where straight booms might struggle to maneuver.
Despite its formidable lifting capabilities, the SQZ300A.4 maintains an impressively optimized footprint, requiring only 1,300mm of installation space with a self-weight of 4,450kg. This exceptional balance of raw lifting strength and structural compactness ensures it can be mounted on suitable heavy-duty trucks while maintaining excellent road adaptability and payload capacity for transporting goods.
Manufactured entirely from premium high-strength steel and assembled using advanced, automated welding technology, the SQZ300A.4 is built to endure decades of punishing work. Integrated safety mechanisms, including mandatory overload protection valves and hydraulic stabilization lock systems, ensure secure, reliable lifting performance. Every weld and joint is rigorously inspected to guarantee absolute safety in the most high-intensity work environments.
Selecting the right lifting equipment requires a thorough understanding of its operational limits and structural specifications. The tables below outline the precise technical parameters and lifting capacities for our crane series. From the maximum lifting moment to the required stabilizer spread, every metric is engineered to provide maximum stability and performance. The data reflects our commitment to transparent, reliable engineering. Please note that the lifting capacity table demonstrates the inverse relationship between the working radius and the safe load limit, ensuring operators can plan their lifts with absolute confidence.
Crane main technical parameters
Max. lifting moment | kN·m | 125 |
Max lifting capacity | kg | 5000/2.5m |
Max hydraulic outreach | m | 15.5 |
Slewing angle | ° | 360° |
Stabilizer spread | mm | 2280-5400 |
Installation space | mm | 900 |
Max operating pressure | MPa | 22 |
Recommended pump capacity | L/min | 50 |
Oil tank capacity | L | 90 |
Crane weight | kg | 2650 |
Specifications subject to change without notice
SQS125G-5 Lifting Capacity Table
Working Radius | 4.95 | 7.6 | 10.3 | 13.0 | 15.7 |
2.5 | 5000 | 2800 | 2000(2.4) | - | - |
3.0 | 3500 | 2400 | 1900 | 1300(3.1) | - |
4.0 | 2650 | 1900 | 1750 | 1300 | 1000(3.8) |
5.0 | 2300(4.5) | 1600 | 1550 | 1150 | 980 |
6.0 | - | 1350 | 1300 | 1050 | 920 |
7.0 | - | 1050 | 1000 | 950 | 880 |
8.0 | - | 980(7.4) | 900 | 850 | 800 |
9.0 | - | - | 800 | 780 | 750 |
10.0 | - | - | 720 | 700 | 680 |
11.0 | - | - | 680(10.1) | 600 | 580 |
12.0 | - | - | - | 520 | 500 |
13.0 | - | - | - | 450(12.8) | 440 |
14.0 | - | - | - | - | 380 |
15.0 | - | - | - | - | 330 |
16.0 | - | - | - | - | 300(15.5) |
Specifications subject to change without notice
The SQS125G-5 is an indispensable asset for residential and commercial building projects. It excels at lifting structural materials, heavy tools, and roofing supplies. By utilizing our custom attachment options, such as specialized aerial work baskets, crews can safely perform intricate facade repairs, window installations, and rooftop maintenance with enhanced stability and reach.
In bustling logistics centers, warehouses, and distribution yards, time is money. This crane accelerates the loading and unloading of palletized goods and heavy equipment. We have documented successful global application cases—from busy Southeast Asian port facilities to European distribution hubs—where our cranes have streamlined cargo workflows and significantly reduced manual handling risks.
Municipal engineering demands versatile equipment. The crane is ideal for streetlight installation, traffic signage setup, and underground pipeline maintenance. When equipped with optional auger attachments, it transforms into a powerful drilling tool, allowing utility crews to bore holes for utility poles and immediately hoist them into place using a single, efficient machine.
Industrial facilities frequently require the precise placement of sensitive machinery. The smooth proportional control of our hydraulic system supports the careful installation and maintenance of HVAC units, commercial generators, and heavy electrical transformers. The crane's precise micro-movements ensure that expensive equipment is positioned without sudden jolts or damaging impacts.
Beyond urban construction, the crane serves as a dependable workhorse for large-scale landscaping and agricultural operations. By attaching specialized grabs, operators can effortlessly hoist mature trees for transplanting, maneuver heavy farming implements, and transport bulk landscaping materials across uneven terrain, proving its worth across diverse industry sectors.
A: A telescopic boom crane, like the SQS125G-5, utilizes a straight boom that extends outward hydraulically. This design provides longer vertical reach, simpler operation, and is highly effective for lifting materials over walls or into deep trenches. Conversely, a folding (knuckle) boom crane articulates at joints, offering superior flexibility for maneuvering loads in highly confined spaces or low-clearance environments.
A: The SQS125G-5 is specifically engineered for light to medium-duty commercial trucks. Because it requires a highly compact installation space of just 900mm and has an optimized crane weight of 2,650kg, it leaves ample room on the truck bed for cargo, maximizing the payload efficiency of your transport vehicle.
A: Absolutely. Its compact structural footprint, combined with a continuous 360° slewing angle and straight boom design, makes it exceptionally well-suited for urban construction, municipal maintenance, and narrow job sites where larger equipment cannot operate. The quiet operation of the premium hydraulic pump also minimizes noise pollution in residential areas.
A: Tengchang Construction Machinery manufactures every crane under strict ISO9001 quality management standards, subjecting each unit to rigorous load testing and safety inspections before dispatch. Furthermore, we stand behind our engineering with a solid 1-year warranty on all core components, ensuring your investment is fully protected against manufacturing defects.
A: We pride ourselves on transparent, rapid delivery cycles for all standard units. For after-sales support, Tengchang offers comprehensive installation guidance, responsive technical troubleshooting, and a globalized spare parts supply network. Whether you are operating domestically or internationally, our technical team is dedicated to keeping your equipment running at peak performance.
