The Cummins QSB6.7 diesel engine is TIER-III compliant beast with proven superior performance and durability. Also standard is a Dana 13.5HR 32662 transmission which offers the latest technology for the diverse needs of off-road cranes. Kessler Co axles are standard on every model. Key features include a formed boom made with high-yield steel which reduces the operating weight of the boom and maximizes performance. engineers and made with world class parts from the best manufacturers in the world. market, these cranes were designed by U.S. Part of the Zoomlion line exported for the U.S. The lift capacity of the RT55 is 55 metric tons (65 U.S. It features a 34m (112 foot) main boom and a maximum jib length of 17m (56 foot), with a maximum tip height of 34.8 meters (114.2 feet). The Zoomlion RT55 is powerful without sacrificing maneuverability. Zoomlion RT55 Crane Overview and Specifications