Sany STC300C5

The SANY STC300C5 is a high-performance 30-ton truck-mounted crane engineered for versatility, mobility, and operational efficiency. Built on a robust 6×4 wheeled chassis, this crane is ideal for medium-duty lifting tasks in urban development, road construction, logistics yards, and industrial infrastructure projects. With a total gross vehicle weight of 28,320 kg, it offers optimal balance between payload, stability, and transportation efficiency.

At the heart of the STC300C5 is a WEICHAI WP7.300E31 turbocharged diesel engine, delivering 220 kW (300 hp) at 2100 rpm, with a peak torque of 1200 N·m. This engine meets China III emission standards, providing a balance between power and eco-compliance. Paired with a FAST 9-speed manual transmission, the drivetrain offers strong torque transfer, supporting a maximum gradeability of 40% and a travel speed of up to 85 km/h, making the crane both road-capable and efficient across mixed terrains.

The lifting mechanism is centered around a 42.5-meter five-section U-shaped main boom, manufactured from high-tensile steel and optimized for strength-to-weight ratio. For increased versatility, the crane is equipped with a hydraulically offsettable 8-meter jib, resulting in a maximum lifting height of 51 meters. The main boom sections are fully synchronized, and the telescoping system is driven by a dual-cylinder with rope and pulley mechanisms, ensuring stable and smooth extension under load.

The crane utilizes a sophisticated electro-hydraulic proportional control system, powered by dual variable displacement axial piston pumps and a priority valve system. This setup allows for simultaneous compound movements, low energy consumption, and precision in boom, swing, and winch operations. The main and auxiliary winches offer a line speed of up to 115 m/min, with a powerful single-line pull of 45 kN, supported by a 10 mm diameter steel wire rope.

Stability is ensured by a fully extended outrigger base of 5.4 × 6.4 meters, with front, rear, and lateral extensions providing a broad footprint. A fixed 6.4-ton counterweight comes standard, with the superstructure mounted on a 360-degree slewing bearing for continuous rotation. Slewing speed reaches up to 2.5 rpm, supported by a hydraulic slewing motor with brake and buffer control to prevent swing backlash.

The operator’s cabin is ergonomically designed with a wide viewing angle, integrated LCD display, air conditioning, adjustable seat, and a multi-function control console. The intelligent CAN bus control system integrates key diagnostics, real-time load monitoring, boom positioning, and warning signals. Additional safety systems include an LMI (Load Moment Indicator), pressure sensors, hydraulic check valves, anti-two block device, and electronic level gauge to ensure safe lifting under varying ground conditions.

Maintenance is also made easy through centralized lubrication ports, modular hose routing, and diagnostic access points. The crane’s fuel-efficient engine, advanced hydraulics, and compact boom retraction contribute to reduced operational costs and improved uptime on site.

The SANY STC300C5 is a complete mobile lifting solution, delivering exceptional reach, control, and safety for contractors seeking a reliable truck crane in the 30-ton class.