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4 Ton Knuckle Boom Truck Mounted Crane

The SKPL-LIFT 4 ton knuckle boom truck mounted crane is a folding-arm boom truck crane designed for engineering transport, equipment loading, and commercial vehicle applications.
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  • SQ4Z

  • SKPL-LIFT


Overview

It has a rated lifting capacity of 4,000 kg, a maximum working outreach of approximately 11 m, and a maximum lifting height of about 15 m, covering most medium-to-heavy lifting scenarios.


The crane features a fully hydraulic drive system, supports 360° continuous rotation, and is equipped with hydraulic outriggers to ensure vehicle stability during loading and lifting operations. It can be mounted on 4×2 or 6×4 commercial truck chassis, balancing roadability and operational efficiency.


A range of factory-direct optional configurations are available, including wireless remote control, hydraulic winch, grabs, extended outriggers, and torque limiter, making it suitable for industries such as construction, steel transport, logistics, and equipment rental.



Product Advantage


Compact Folding Design:
The compact folding structure allows up to 5 cranes to be loaded into a single 40HQ container, significantly reducing international shipping costs per unit.


Pre-assembled Hydraulic Modules:
Hydraulic modules are pre-installed, enabling faster installation and commissioning after arrival, while reducing on-site labor requirements.


Simplified Operation & Maintenance:

The simplified hydraulic layout allows local technicians to quickly troubleshoot and perform routine maintenance.

Standardized components ensure stable spare parts supply and help minimize downtime.



Factory-Level Customization:
Supports factory-level customization to meet different national regulations and special working conditions.



Technical Parameters



Technical  Parameter

Installation space

850 mm

Model name

SQ4ZB3+1

Max.Lifting Capacity

4000 Kg

Max.Lifting Moment

8.4 Ton.m

Hydraulic System Pressure

28 Mpa

Hydraulic System Flow

25 L/min

Slewing Angle

400°

Reconmmend Power

15 Kw

Oil Tank Capacity

60 L

Crane Self Weight

1310 Kg


Application Scenarios of 4 ton Knuckle Boom Truck Mounted Crane


Typical Applications & Installation Scenarios


Urban Building Material Transport & On-Site Lifting
Installed on a medium-duty truck, the crane enables integrated transportation and unloading, allowing direct lifting of concrete products, steel beams, glass panels, and prefabricated components at construction sites without the need for additional lifting equipment.


Factory Equipment Relocation & Installation
Suitable for equipment positioning, production line adjustments, and machinery replacement within factories or workshops, especially in facilities without overhead cranes or where temporary lifting solutions are required.


Logistics Parks & Last-Mile Handling
In logistics parks with limited dock space, the crane allows precise loading and unloading of pallets, wooden crates, and irregular cargo at warehouse entrances or roadside locations.

Municipal Facility Installation & Maintenance
Used for the installation and maintenance of street lighting, traffic signs, electrical cabinets, and small municipal facilities, enabling quick roadside operations while minimizing road closures and traffic disruption.


FAQ


1. What should we do if strong wind occurs during lifting?
Stop lifting immediately, put the load safely on the ground, retract the boom to the shortest position, and move the crane to a sheltered area. If it cannot be moved, secure the crane properly against wind.

2. What are your payment terms?
30% deposit by T/T, MIC platform payment, or L/C at sight. Better terms are available for long-term partners.

3. Does the price include transport, installation, and training?
Free training is included. Installation parts and manuals are provided. Freight cost depends on the delivery address.

4. How long is after-sales support?
Lifetime online technical support and 1-year warranty. Extended warranty is available.

5. How long has your factory been in this industry?
18 years of experience. Products exported to over 78 countries.

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SKPL-LIFT is a professional manufacturer and solution provider specializing in the truck-mounted crane industry.

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 Add: Pengzheng Avenue, Dapeng Town, Tongshan District, Xuzhou City, Jiangsu Province
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