Imperial Crane has one of the largest and most diverse crane rental fleets in the U.S. With a massive fleet of cranes and specialized equipment including rough terrain cranes, mobile cranes, crawlers, towers and hoists, Imperial Crane is certain to have the equipment for your job. We are constantly adding to and replenishing our fleet with the newest and most powerful cranes in their class, including specialized crawlers for wind turbine erection and maintenance, rough terrain cranes for refinery work, all terrains, towers and hoists for industrial and commercial construction, and specialized heavy lift equipment for plant work.shooting, outspoken John Bohne worked his knuckles raw to become one of the most powerful businessmen in Chicago, while also building what has become one of the largest crane companies in the world.