Top Efficiency, Capacity Utilization Across Multiple Scenarios A terrific crane for all-around use, the AC 5.140-1 is the strongest machine in the 140 t class. Its robust and agile undercarriage chassis, coupled with 72% gradeability, affords outstanding off-road mobility to reach and handle any construction site. The AC 5.140-1’s boom length is versatile for general construction, yet strong enough for heavy lifts including tilt-up panels. The bi-fold jib includes an integrated heavy lift jib which can be installed without a support crane and cover numerous load cases. The latest engine technology increases the operating volume, allowing inner cities to be approached and addressing environmental zone concerns without issue.