Zoomlion Rough Terrain
Model: RT55

Maneuverable and robust drive
• Four-wheel drive and four-wheel steer chassis;
• Fully hydraulic steering system;
• Variable steering modes, front-wheel steer,four-wheel steer and crab steer;
 Short vehicle length and small turning radius provide the crane with maximum maneuverability and flexibility in narrow job sites

Excellent off-road capability
• Big ground clearance and departure / approach angle offer excellent off-road capability.

Strong gradeability
• Cummins electronically-controlled engine, automated transmission and steerable drive axlex provide reliable power output.
• Even in the condition of abrupt road resistance,the engine can also be functional. 
• Four-wheel drive, hydraulic suspension and special tires optimize the vehicle’ s drive performance to its maximum, suitable for any bad roads and job sites.

Pick-and-carry operations

• The rough terrain crane has the ability to pick and carry loads, thus improves the working efficiency greatly.
• The crane can also carry out ”On tires“ Lifts without extending the outrigger beams in narrow job sites.
• Superior pick-and-carry ability during short-distance transit can bring great convenience to the users.

Single cab design
• Single cab design with large skylight provides large field of view;
• Air-cushioned seat suits to all types of figures, which can release the driver’ s or operator’ s fatigue, thus improves the working efficiency;
• The crane is fitted with air conditioning, suitable for all-weather work;
• Digital display and keyboard units,advanced data bus technology,error check and audible & acoustic alarm ensure the safety and high efficiency of the operation.

Item Unit Value
Work performance Max. rated lift capacity × work radius kg.m 55000×3.0
Max. load moment of basic boom kN.m 1967
Max. load moment of fully extended main boom kN.m 1126
Max. lift height of fully extended main boom m 34.8
Max. lift height of jib m 52.4
Dimensions Overall dimensions(L×W×H) mm 13110×3300×3750
Outrigger spread (L×W) mm 6900×6900
Main boom length (Fully retracted fully extended) mm 10800-34000
Jib length (Jib section 1,jib sections 1+2) mm 10000-17000
Boom angle ° -3 - 78
Swing range ° 360 360° unlimited swing(Full range)
Work Speeds Max. hoist rope speed (Main winch) m/min 150
Min. boom extend time s 80
Min. boom retract time s 60
Min. boom derrick up time s 60
Min. boom derrick down time s 65
Swing speed r/min 0-2
Hydraulic system Rated work pressure MPa 27
Rated work oil flow L/min 400
Hydraulic oil tank capacity L 730
Mass Complete vehicle mass kg 40260
Front axle load kg 21420
Rear axle load kg 18840
Travel Max. travel speed (Forwarsd / backwards) km/h 39/15
Wheelbase mm 3950
Treads (Front / rear) mm 2605