In the Variable Position Counterweight system, the counterweight is centered between the fully retracted and fully extended positions, automatically balancing the crane's center of gravity. A patented rail system transfers the counterweight from back to front, depending on the boom extension.
Photo: Courtesy of ALL Erection & Crane Rental Corp.

ALL Erection & Crane Rental Corp. has purchased 10 of the new 330-USt Manitowoc MLC300 crawler crane. The latest offering from Manitowoc and making its debut at CONEXPO-CON/AGG in March, the MLC300 features Variable Position Counterweight system.

Typical crawlers are heel heavy during assembly and while no load is on the hook. But when making a lift, the high ground-bearing pressure typically transfers to the toe of the crawler. With traditional cranes there is no way to avoid these shifting high ground pressures. MLC300 is not a traditional crane.

Because the counterweight is movable as needed, VPC helps reduce the crane's operating footprint, which in turn helps reduce the ground-bearing pressure and the amount of ground preparation required for crane operations. This means less matting to distribute the weight across a broader footprint. The VPC technology also eliminates the need for carbody counterweights. The weight typically added to the carbody can now be added to the upperworks to increase capacity while retaining performance and on-site mobility. For more information call toll free: (800) 232-4100 or go to www.allcrane.com