Sany STC250C5 Load Chart PDF + Specifications

The Sany STC250C5 was developed as an export-oriented 25-ton truck crane platform emphasizing lifting performance, intelligent electro-hydraulic control, and reliable chassis durability. According to the official specification brochure , the crane features a five-section telescopic boom fabricated from high-strength structural steel with a large U-shaped cross-section to enhance torsional rigidity and bending resistance.

The basic boom length measures 10.7 meters, extending to 41 meters when fully deployed. When fitted with the 8-meter fixed jib, the total boom and jib combination reaches 49 meters, providing a maximum lifting height of 49.5 meters. The maximum lifting moment on the basic boom is rated at 1,088 kN·m, while the full-extension boom provides 672 kN·m. With the boom fully extended and jib installed, the lifting moment is rated at 293 kN·m .

The crane adopts a single piston pump electro-hydraulic control system that ensures efficient flow distribution and responsive combined movements. The minimum stable single-rope speed is 1.2 m/min, allowing millimeter-level precision lifting. Slewing is continuous 360°, with a maximum slewing speed of 2.7 r/min. Full boom extension and retraction require 80 seconds and 95 seconds respectively, while full luffing up and down time is 45 and 50 seconds . The main and auxiliary winches both provide a maximum single-line speed of 125 m/min, using 16 mm diameter wire rope.

The STC250C5 is mounted on a 6×4 carrier chassis. Power is supplied by a Weichai WP7.300E31 inline six-cylinder diesel engine compliant with Euro III emission standards, delivering 220 kW at 2,100 rpm and a maximum torque of 1,250 N·m between 1,200 and 1,600 rpm . The engine is paired with a FAST 9-speed manual transmission featuring nine forward gears and two reverse gears, providing a wide speed ratio range suitable for both grade climbing and highway travel.

Gross vehicle weight is 31.9 tons. The crane achieves a maximum travel speed of 85 km/h and a maximum gradeability of 41 percent. Minimum steering radius is 10.5 meters, with a boom tip steering radius of 12 meters. Minimum ground clearance is 240 mm, while approach and departure angles are 10° and 13° respectively .

The outrigger system adopts an H-type layout with a longitudinal span of 5.28 meters and transverse span of 6.4 meters, providing stable 360-degree lifting when fully deployed. A fifth outrigger is standard for enhanced stability. The counterweight is a fixed 6.2-ton configuration without removable blocks.

The operator’s cab is ergonomically designed with safety glass, large internal space, panoramic skylight, electric wiper, and integrated load moment indicator display. The control system utilizes CAN-BUS networking for real-time monitoring, fault diagnosis, and intelligent power distribution. The integrated load moment indicator system ensures overload protection, over-release protection, and anti-two-block functionality.

Overall, the Sany STC250C5 combines a 41-meter five-section boom, 1,088 kN·m lifting moment, 6×4 carrier configuration, 220 kW powertrain, and electro-hydraulic precision control. Its configuration delivers balanced lifting strength, transport efficiency, and operational stability suitable for a wide range of construction and industrial lifting applications.