Since its foundation in 1954, Koyo Seiki has been accumulating experience and achieving results as a specialist in the manufacture of hydraulic equipment.
Koyo Seiki products are applied in a variety of equipment in diverse industrial fields and have gained wide support over the course of many years, thanks to the companyfs capability in development and manufacturing, accompanied by its expertise in hydraulic technology. In particular, we possess the worldfs top class technology and manufacturing capacity in long cylinders for construction machinery.
In addition, we have strengthened alliances with companies in the Kawakin Holdings Group in recent years. We have developed products that use oil damper technology and are highly regarded in Japan and abroad in the area of vibration damping and isolation. In the environment and energy fields, which have high growth potential, we are determined to support the base of the industry and contribute to the realization of a safe, reliable, and sustainable society.
Koyo Seiki Head Office and Tsukuba Plant
422 Kuramochi, Chikusei City
Ibaraki, 300-4515, Japan
TEL. +81-296-52-1311@FAX. +81-296-52-0236
¡Access by train
Tsukuba Express Line
Get off at Tsukuba Station, which is the end of the line.
Approximately 40 minutes by taxi JR Tohoku Main Line or Tohoku Shinkansen
Get off at Koyama Station and transfer to JR Mito Line. Get off at Shimodate Station.
Approximately 20 minutes by taxi
¡Access by bus
Express bus from Tokyo Station
Take the bus for Tsukuba Center or Tsukuba University at the Yaesu-South Exit of Tokyo Station.
Get off at Tsukuba Center.
Approximately 40 minutes by taxi
¡Access by car
Approximately 40 minutes from Tsuchiura-Kita IC of Joban Expressway
Koyo Seiki Tokyo Office
Kotobuki Building, 10th Floor, 3-10-4 Iwamoto-cho,
Chiyoda, Tokyo, 101-0032, Japan
TEL. +81-3-4329-1311@FAX. +81-3-4329-1310
¡Access by train (Akihabara Station)
Approximately a 6-minutes walk from the Showa-dori exit
For Tsukuba Express
Approximately a 7-minutes walk from the A1 exit
For Subway Hibiya Line
Approximately a 3-minutes walk from the exit 4
¡Access by train (Iwamotocho Station)
Exit A4 front, 0 minutes walk
Using an integrated system that spans design and development to manufacturing, Koyo Seiki tackles complex challenges every day by flexibly forming teams of specialists from various workplaces.
We develop and make our own testing equipment and prototypes, and conduct performance tests, reviews, and are dedicated to making continuous improvements, which then assures the speedy provision of end products which satisfy customer needs for quality, delivery, and economy.
We insist on trustworthy quality management and are dedicated to continuously developing a team of engineers with excellent, state of the art, skills. Owning various types of testing and performance assessment equipment to ensure high quality of our products has enabled Koyo Seiki to obtain ISO9001 certification. The company is making a concerted effort to manage and improve daily operations.
We also acquired ISO14001 certification, in 2011. We are striving to reduce environmental burden and seeking to ensure high quality and reliability based on a more global perspective.
Obtained ISO9001 certification in 2006
Obtained ISO14001 certification in 2011
We have a full line-up of equipment that enables integrated in-house production of long, large, and special cylinders. Our large integrated machine, which is one of the largest in Japan, grinding machines for rod outer diameters, NC lathes, burnishing machines, and a plating machine of ultra-long cylinders are among the equipment used to satisfy customersf requests. Moreover, we have developed one of the largest servo-type testing equipment in Japan, to ensure the quality of oil dampers.
Alliances with various companies in the Kawakin Holdings Group have contributed to enhance Koyo Seikifs management base.
Particularly in the area of vibration damping and isolation, we are aggressively marketing our self-developed products such as oil dampers, which utilized joint research with Group companies.
We provides high-grade technologies that resolve social issues and help create a safe, reliable, and pleasant way of life and social infrastructure.
Kawakin Holdings Group aims to become an engineering solutions group that provides high-grade products and service worldwide with its comprehensive technological capabilities and organizational strengths.