More and more innovative technologies were applied to products with a heavy focus on hydraulic shovels. Using mechatronics for engine control was one of the examples of Japan's advanced electronics technology that surpassed the world standards.
While large bulldozers D155, D355A, D455A were used at coal mines in the United States, a brand new mechanism in the history of the bulldozer was introduced. It was the high drive bulldozer by Caterpillar Inc.
Komatsu developed D375A in order to compete with Caterpillar. It took advantage of low drive and low center of gravity, and to give a complete new look to the exterior, Komatsu commissioned the design of its body to an Italian design company.
Since its first emergence in 1951, it took only 50 years for the hydraulic shovel to establish its primary position on construction sites worldwide. Its size ranges from mini to super size depending on the scale of construction, and during the half century, it kept evolving by achieving a minimum rear-swing radius and adapting styles that would work with characteristics of each site. Mirroring the movement of a human hand, a hydraulic shovel will continue to evolve during the 21st century.