Manitowoc 31000 Crawler Crane Offers Three Boom Configurations

The 2,535-ton capacity Model 31000, the largest crawler crane from Manitowoc Cranes, Manitowoc, Wis., is nearing the end of its testing phase and is scheduled to be delivered in early 2012. In addition to its capacity and unique Variable Position Counterweight, the boom and jib combinations of this crane are the longest ever designed for Manitowoc crawler cranes.

Mike Wood, senior product manager with Manitowoc Cranes, says that with a crane the size of the 31000, maximizing flexibility and versatility were major design priorities. “We have designed the 31000 to be as adaptable as possible,” he said. “The crane is available with multiple boom and jib configurations, as well as five counterweight configurations.”

The 31000 comes standard with a 180-foot heavy-lift main boom, but using optional 16-foot and 33-foot inserts, the main boom can be extended to a total length of 361 feet. Optional boom configurations can also dramatically increase the crane’s reach and lift height.

The first attachment is a fixed jib with a basic rating of 1,543 tons and a basic configuration of 79 feet. Using optional inserts, users can extend the fixed jib to 138 feet.

A luffing jib is also available for the 31000. The standard luffing jib is 118 feet, but by using optional inserts, the luffing jib can be extended to 472 feet. Maximum capacity of the luffing jib is 1,212 tons.

The 31000 also has a combination boom, which combines parts of the main boom and the luffing jib. With various inserts, the combination boom has a total maximum length of 453 feet.

Wood says that there is always an emphasis on asset management when designing the various boom and jib combinations. “We are utilizing much of the luffing jib for the fixed jib, and many of the boom sections and boom top of the luffing jib are used in the combination boom, thereby ensuring maximum utilization.”