Brute Strength, Design Refinement

摘要

The largest crawler dozer Construction Equipment has encountered-in a West Virginia coal mine-was the Komatsu D575-2 Super Dozer, with a standard 90-cubic-yard blade, 1,150 horsepower, and an operating weight in excess of 330,000 pounds. The D575 is no longer sold in North America, but this market is not without its "super dozers," as evidenced by such tractors as the 850-horsepower Cat Dl1T and the 890-horsepower Komatsu D475A, both with operating weights approaching a quarter million pounds.