Zoomlion RT75 Load Chart PDF + Specifications

The Zoomlion RT75 was developed to meet the increasing demand for medium-capacity rough terrain cranes capable of operating efficiently in confined industrial environments and undeveloped jobsites. Designed primarily for infrastructure construction, petrochemical projects, mining support, oil field maintenance, and industrial lifting applications, the crane combines strong lifting capacity with excellent maneuverability, off-road performance, and compact transport dimensions.

The RT75 uses a dedicated rough terrain carrier chassis equipped with four-wheel drive and four-wheel steering systems. The crane offers multiple steering modes including front-wheel steering, coordinated four-wheel steering, and crab steering, allowing exceptional maneuverability within narrow construction sites and congested industrial facilities. The compact chassis dimensions, relatively short wheelbase of 4,150 mm, and small turning radius significantly improve jobsite accessibility compared to larger all terrain cranes.

A major feature of the RT75 is its five-section fully hydraulic telescopic boom manufactured from high-strength steel. The boom extends from 12.5 meters to 38.5 meters and is designed to provide strong lifting performance throughout the operating range. Boom elevation ranges from -3° to 78°, enabling both low-radius heavy lifting and high-angle lifting applications. Full boom extension requires approximately 110 seconds while retraction takes approximately 90 seconds. Boom derricking from minimum to maximum angle requires approximately 80 seconds upward and 70 seconds downward. The boom system is optimized for efficient lifting performance while maintaining structural rigidity and operational stability.

For additional lifting height and outreach, the crane can be equipped with offsettable lattice jibs. Two jib configurations are available, including a 10-meter jib and a 17-meter jib. Both jib configurations support offset angles of 0°, 20°, and 40° to improve operational flexibility during high-reach lifting work. With the jib installed, the crane achieves a maximum lifting height of approximately 56.8 meters, while the fully extended main boom provides a maximum lifting height of approximately 41 meters. Detailed lifting charts for jib operation are provided throughout the specification manual, showing lifting capacities at various boom angles and working radii.

The RT75 has a maximum rated lifting capacity of 75 tonnes at a 3-meter working radius and develops a maximum load moment of approximately 2,814 kN-m on the basic boom. Even with the boom fully extended, the crane maintains a lifting moment of approximately 1,184 kN-m. The crane supports lifting on fully extended outriggers, retracted outriggers, and “on tires” lifting configurations. Its pick-and-carry capability allows the crane to transport suspended loads over short distances, improving operational efficiency in industrial sites and material handling applications.

The hoisting system uses hydraulic winches with a maximum hoist rope speed of approximately 125 meters per minute. The hydraulic system operates at a rated pressure of approximately 29 MPa with rated hydraulic flow reaching 320 L/min. Hydraulic oil capacity is approximately 1,000 liters, ensuring sufficient cooling and hydraulic performance during prolonged lifting operations. The slewing system provides full 360-degree continuous rotation with slewing speeds ranging from 0 to 2 rpm.

Power for the crane is supplied by a Cummins electronically controlled diesel engine driving an automated transmission and steerable drive axles. The powertrain is engineered to maintain strong tractive effort even under abrupt road resistance and difficult terrain conditions. The combination of four-wheel drive, hydraulic suspension, and heavy-duty rough terrain tires gives the RT75 excellent off-road capability and strong gradeability. Maximum travel speed reaches approximately 36 km/h in both forward and reverse directions.

The carrier chassis uses hydraulic suspension systems and specialized off-road tires to maximize terrain adaptability. Large ground clearance and favorable departure and approach angles improve mobility over uneven terrain and undeveloped construction areas. The crane’s overall dimensions measure approximately 14,897 mm in length, 3,395 mm in width, and 3,840 mm in height, while total operating weight is approximately 52.8 tonnes.

The RT75 is equipped with a single-cab design serving as both the driving and operating station. The spacious cab incorporates a large skylight for improved upward visibility during high-angle lifting operations. Interior equipment includes an air-cushioned operator seat, air conditioning system, digital displays, keyboard control units, and advanced data bus technology. Integrated monitoring systems provide audible and visual warnings, operational diagnostics, and lifting data to improve both safety and efficiency during crane operations.

Safety systems integrated into the RT75 include rated capacity indicators, boom angle indicators, anti-two-block devices, overload warning systems, hydraulic safety valves, and error-checking diagnostic systems. The crane’s electronic control architecture continuously monitors lifting conditions and warns the operator when approaching operational limits. The lifting capacity charts included in the specification document provide extensive rated load information for fully extended outriggers, retracted outriggers, and on-tire lifting conditions across the crane’s entire boom range.