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.
Komatsu ended the technical partnership with Bucyrus Erie and started developing the PC series as its independent brand.
PC-1 adopted the pump neutral system that saved fuel consumption by holding exhaust from the main pump to a minimum to prevent power loss.
PC200-1：Weight: 18500kg, Bucket capacity: 0.7m3
PC200-2 that came out in 1982, two years after PC-1, used OLSS (Open Center Load Sensing System) as the first function of the energy saving hydraulic system. It decreased power loss that occurred when the lever is in neutral and fine control is on, which led to tremendous energy conservation. It also achieved improvements in starting and noise reduction.
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.