Rough Terrain Crane (60 Ton to 80 Ton)
A rough terrain crane has a boom mounted on an undercarriage atop four rubber tires that are designed for off-road pick-and-carry operations. Outriggers are used to level and stabilize the rough terrain crane for hoisting.
These telescopic cranes are single-engine machines, with the same engine powering the undercarriage and the crane, similar to a crawler crane. The engine is usually mounted in the undercarriage rather than in the upper, as with crawler crane. Most have 4-wheel drive and 4-wheel steering for traversing tighter and slicker terrain than a standard truck crane, with less site prep.