1st Silent Piler
KGK-100A

Under the Press-in Principle, in order to press pile into ground by static load, press-in machine utilises reaction forces derived from fully installed piles which are anchored to the ground and regarded as a united part of the Earth. This principle is aware and put into practical use by Mr. Akio Kitamura, the founder of Giken group, based on his experience at construction sites. He knew sheet piles were not extracted easily, because soil adhered to the sheet piles underground. From this fact, he got aware that a pile driver can be integrated with the Earth, if the machine grips several driven piles. And he realized that it is possible to make a noise-free & vibration free pile driver, if pile can be pressed by utilizing the extraction resistance force of the reaction piles.

It was in 1960s. Japanese economy was in the rapid economical growth period. Many upcoming major projects were facing with excessive noise and vibration at construction sites. Mr. Kitamura established Giken to challenge construction pollutions. Under his wish, he started developing the pile driver. It was July 1975 that the 1st non-noise & non-vibration hydraulic pile press-in and extraction machine, Silent Piler (KGK-100A) was born.