Sany STC550 truck crane is equipped with more safety devices. Main and auxiliary winches are equipped with over roll-out limiter to prevent over rolling-out of wire rope. Boom and jib ends are equipped with height limiters respectively to prevent over-hoisting of wire rope.

Powerful Lifting Capacity

The 55 ton truck crane has five-section boom of high strength steel structure and optimized U-shaped cross section with max.lifting capacity of 55t, full-extended boom length of 43m, jib length of 16m, max.lifting height including jib of 59.2m, reduce weight and improve safety significantly.

Jib mounting angles are 0°, 15°, and 30°, which ensure fast and convenient change-over between different operating conditions so as to improve working efficiency of the machine.

Efficient & Unique Hydraulic System

Load feedback and constant power control is applied to provide strong lifting capacity and good micro-mobility. Unique steering buffer design is adopted to ensure stable braking operation.Hydraulic system is configured with the balance valve, overflow valve and two-way hydraulic lock etc.to ensure stable and reliable operation.

Excellent Traveling Performance

Double-axle drive is used to provide good trafficability and comfortableness under complex road condition; engine has the multimode power output function, which reduces power consumption; the use of tipping over early-warning technology provides high stable and safe operation.

Intelligent Electronic Control

Self-developed controller SYMC special for engineering machinery is configured. The adoption of CAN-bus full-digital network control technology ensures stable control signal, simple harness, and high reliability. Timely feedback of data information can achieve the monitoring of the overall working status in real time.

The Load Moment Limiter

Equipped with the comprehensive intelligent protection system is used with accuracy within 5%. The adoption of comprehensive logic and interlock control system ensures more safe and reliable operation.

Max. lifting capacity	55t
Overall length	13750mm
Overall width	2750mm
Overall height	3800mm
Axles	4
Axle distance-1,2	1450mm
Axle distance-2,3	4000mm
Axle distance-3,4	1350mm
Overall weight	42000kg
Front axle load	16000kg
Rear axle load	26000kg
Model	Cummins
Rated power	250kw/2100rpm
Rated torque	1425N·m/1200rpm
Emission standard	Euro Ⅲ
Max. traveling speed	85km/h
Min.turning radius	12m
Min.turning radius of boom head	14.5m
Drive train	8 × 4
Min. ground clearance	295mm
Approach angle	18 °
Departure angle	12 °
Max. gradeability	40%
Fuel consumption per 100km	≤ 45L
Temperature range	– 20 ℃ ~ + 45 ℃
Min.lifting radius	3m
Tail swing radius of superstructure	4m
Boom section	5
Boom shape	U-shaped
Max. lifting moment-Base boom	1774kN·m
Max. lifting moment-Full-extend boom	840.8kN·m
Max. lifting moment-Full-extend boom+jib	318kN·m
Length-Base boom	11.5m
Length-Full-extend boom	43m
Length-Full-extend boom+jib	59m
Outrigger span(Longitudinal/Transversal)	6×7.2m
Jib offset	0 ° 15 ° 30 °
Max. single rope lifting speed of main winch(no load)	130 m/min
Max. single rope lifting speed of auxiliary winch(no load)	130 m/min
Full extend/retract time of boom	100 / 120s
Full raise/lower time of boom	80 / 80s
Swing speed	0~2 r/min
HVAC in up cab	Cooling
HVAC in low cab	Cooling and Heating