The 4 ton knuckle boom truck mounted crane (Model: SQZ84A.2) represents a premium lifting solution engineered for rigorous infrastructure and commercial material handling. Forged from high-strength, fine-grained structural steel and finished with a tactile, weather-resistant industrial coating, this hydraulic knuckle boom crane delivers exceptional durability. It provides an impressive maximum lifting moment of 8.4 t·m alongside a versatile 400° slewing range. Designed with a remarkably compact installation footprint, it integrates effortlessly onto various truck chassis. Every unit undergoes strict robotic precision welding and standardized factory testing, ensuring rock-solid stability even in extreme weather conditions or high-cycle work environments.
Engineered to handle a formidable 4000 kg maximum lifting weight, this folding boom truck crane excels in hoisting heavy construction aggregates, dense steel structural components, and oversized industrial machinery. The integration of thickened boom plates significantly enhances fatigue resistance, providing a superior safety margin during heavy-load operations. Operators will notice the absolute rigidity of the boom, eliminating the unnerving sway often experienced with lighter-duty alternatives.
Featuring an advanced multi-section articulated boom design, this crane offers extraordinary reach and articulation within confined construction sites. The expansive 400° slewing angle drastically reduces the need for frequent vehicle repositioning. Operators can smoothly navigate complex spatial constraints, maneuvering loads over obstacles with precise, fluid movements. This agility translates directly to shorter loading cycles and elevated on-site productivity for time-critical infrastructure projects.
Despite its immense lifting capabilities, this truck loader crane maintains a remarkably lean self-weight of just 1350 kg. The intelligently engineered compact base requires minimal installation space, preserving the maximum possible payload capacity of the transport vehicle. This carefully balanced weight-to-performance ratio ensures that fuel efficiency remains optimal during transit, allowing commercial fleets to maximize their operational profitability without sacrificing raw lifting power.
At the heart of this lifting equipment is a resilient 28 MPa rated hydraulic system designed for relentless, continuous operation. The system guarantees a stable, uninterrupted oil flow that translates into quiet, smooth lifting motions and pinpoint load placement. Upgraded seals and precision-machined valves prevent pressure drops, ensuring that the crane responds instantly to operator inputs, thereby minimizing unexpected downtime and maximizing daily throughput.
Recognizing that operational requirements vary wildly across different regions, this crane is offered with comprehensive customization options. Buyers can specify intuitive control system layouts, specialized auxiliary attachments, and distinct color schemes coated in industrial-grade anti-corrosion paint. Furthermore, comprehensive global certification support guarantees that the equipment meets stringent local regulatory standards right out of the box, facilitating immediate deployment.
Core Parameter | Specification | Core Parameter | Specification |
Maximum Lifting Weight | 4000 kg | Rated Hydraulic Pressure | 28 MPa |
Maximum Lifting Moment | 8.4 t·m | Slewing Angle | 400° |
Crane Self Weight | 1350 kg | Installation Space | 850 mm |
Recommended Hydraulic Flow | 25 L/min | Oil Tank Capacity | 60 L |
Recommended Power | 15 KW |
This compact articulated boom crane is meticulously tailored to conquer diverse operational challenges across multiple demanding sectors. Its versatile lifting profile makes it an indispensable asset for various commercial and infrastructure scenarios:
Municipal Infrastructure: Precision handling of heavy precast concrete components and underground utility materials in tight city streets.
Commercial Construction: Efficient material lifting and precise placement of structural steel in confined urban building sites.
Industrial Relocation: Safe and controlled installation or extraction of large-scale manufacturing equipment within existing facilities.
High-Volume Logistics: Rapid loading and unloading cycles for heavy freight, maximizing daily transport turnover for logistics operators.
Equipment Rental Fleets: A highly reliable, low-maintenance unit perfectly suited for both short-term contracting and long-term project leases.
Safety remains the paramount priority when operating heavy lifting machinery. Prior to engaging the power take-off (PTO), operators must park the vehicle on a verified firm, level surface. Fully extend the outriggers and secure them with heavy-duty support pads to create an unshakeable foundation. Conduct a comprehensive visual sweep of the site to identify overhead electrical hazards or physical obstructions. Always adhere strictly to the official load chart—never exceed the rated capacity. Maintain a strict minimum clearance of 10 meters from active high-voltage lines, avoid simultaneous multi-boom actuations that could destabilize the load, and never leave a suspended object unattended.
The simplified structural layout of this crane significantly reduces the complexity of daily upkeep. Operators should perform rigorous pre-operation inspections, checking hydraulic oil levels, verifying the integrity of high-pressure hoses, and confirming bolt torque specifications. The industrial-grade anti-corrosion coating protects the exterior, but scheduled lubrication of all pivot points, boom slide pads, and cylinder pins is essential to prevent premature wear. Thanks to the accessible component arrangement, replacing worn parts is straightforward. However, to ensure absolute compliance with safety standards, only certified technicians should perform deep hydraulic system interventions.
Absolutely. This specific model is forged with a reinforced structural frame utilizing fine-grained structural steel, specifically engineered to withstand the immense stresses of frequent, high-cycle lifting. Paired with a highly stable 28 MPa high-pressure hydraulic system, it delivers unwavering performance, ensuring your operations remain highly productive even in the most demanding work environments without suffering from thermal degradation or power loss.
Yes, comprehensive global certification support is a cornerstone of our offering. We provide meticulously documented compliance packages tailored to the specific regulatory and safety requirements of your destination market. This proactive approach eliminates customs friction and ensures that international purchasers can immediately integrate the equipment into their fleets legally and safely.
We provide extensive customization capabilities to align the equipment perfectly with your operational workflow. Clients can select specialized control system configurations for enhanced ergonomics, specific color schemes utilizing weather-resistant industrial coatings to match corporate branding, and a variety of auxiliary accessories. These tailored performance configurations ensure the crane meets the exact demands of your unique material handling projects.
We maintain a comprehensive global technical support network designed to minimize equipment downtime for our clients. Our rapid-response spare parts supply chain ensures that critical replacement components are dispatched swiftly. Whether you require troubleshooting assistance or routine wear parts, our dedicated service teams are readily available to keep your lifting operations running smoothly and profitably.
