Parts for SQS100-3 4-Ton 3-Section Straight-Arm Crane

The SQS100-3 4-ton, 3-section straight-boom crane features a lightweight, pentagonal boom structure that minimizes the crane's deadweight while maintaining lifting strength; this design reduces the footprint on the chassis, making it ideal for retrofitting onto light-to-medium-duty trucks and for daily cargo handling. With a maximum lifting capacity of 4 tons, a boom length of approximately 7 meters, and a maximum working radius of about 8.4 meters, it meets short-range lifting needs for construction materials, equipment, palletized goods, and general engineering supplies—effectively solving customer pain points regarding low manual loading efficiency and the high costs of renting external cranes. It offers 360-degree continuous rotation, allowing for flexible operation from both sides and the rear of the vehicle, thereby reducing the need for frequent repositioning. Dual-side ground controls paired with a manual throttle ensure simple operation and easy maintenance, making the unit particularly well-suited for long-term use in overseas markets. Customers can also mount the crane directly onto existing local chassis; compared to purchasing a complete truck-mounted crane, this approach further lowers procurement, international shipping, and long-term maintenance costs—an ideal solution for customers prioritizing lightweight design, operational flexibility, low initial investment, and high operational efficiency.

Why Choose Us for Your Special Purpose Vehicle?
Choosing the right special purpose vehicle supplier is not only about finding a competitive price—it is about receiving a vehicle that truly matches your local regulations, operating conditions, payload requirements and business needs. As a professional manufacturer and exporter, we provide factory-direct pricing together with complete one-stop service, helping customers reduce purchasing risks, communication costs and delivery delays.
We can customize the chassis brand, engine power, emission standard, left-hand or right-hand drive, body dimensions, working system and optional equipment according to your application. Whether the vehicle will be used for construction, logistics, municipal services, mining, agriculture or emergency operations, our technical team will recommend a practical and cost-effective configuration rather than simply selling a standard model.
Every vehicle is produced under a controlled manufacturing process and undergoes inspection, functional testing and road testing before delivery. Customers can receive production updates, detailed photos, operation videos and final inspection records. Factory visits and independent third-party inspections are also welcome. Applicable certifications, export documentation, shipping arrangements and customs-related documents can be prepared according to the destination market and project requirements.
Our service continues after delivery. We provide operation guidance, technical support, spare-parts assistance and troubleshooting to help customers keep their vehicles working efficiently.
Send us your required vehicle type, working conditions, loading capacity and destination country. We will provide a competitive quotation, a customized technical solution and factory inspection support for your project.