Komatsu first showed a 1,000 horsepower (750 kW) bulldozer prototype, the D555A, to the public at the Conexpo equipment exhibition in Houston, Texas in 1981. Due to economic conditions at the time, development was stalled for much of the 1980s.

Komatsu exhibited a prototype model of its 120T bulldozer, D555A, at the CONEXPO’81 in 1981. The D555A is capable of mass earth-moving with high productivity - a requirement that is growing rapidly, in recent years.

Jan 5, 2024 · Does anyone have information and unique photos of these machines? d455a was reportedly the first superdozer. Does anyone know of any dozers still in operation? Some time ago, you could find several of these machines on Russian construction machinery websites. The D555a was a prototype and only one was reportedly built.

Completed about three years later, the D555A concept machine was the world's largest bulldozer at the time. It was developed to operate at large-scale mines and other worksites requiring massive earth-moving operations.

Aug 29, 2019 · Komatsu’s giant D575A has long since been discontinued from its range, but there is still a lot of interest in this iconic bulldozer, which was for many years the largest production dozer in the world, so much so that a group has recently been created on …

Feb 8, 2010 · Hi all, I was just wondering if anyone has anymore images of the Komatsu D555A Dozer? It was displayed to the public at the 1981 ConExpo as a prototype that lead to the D575A-2 that was finally released in 1991.

Jan 5, 2024 · That is a comparison to a new D10 not an original D10 that is closer in weight to a D11.

Komatsu Bulldozer D555A (1981) This was one of the models that Komatsu exhibited at CONEXPO, the exhibition of construction equipment held in Houston, Texas of The United States in January 1981.

Semantic Scholar extracted view of "Design Features of Komatsu’s Coming Bulldozer D555A" by T. Takamatsu et al.