• December 1943
    Koganei Seiki Co. Ltd was founded, and the company started airplane part manufacturing for Tachikawa Aircraft Co..
  • October 1951
    Koganei started manufacturing of insulators as a subcontract factory for Toshiba Electric’s Fuchu Plant.
  • December 1954
    Koganei was reorganized into a stock company.
    Company’s capital increased to 1,000,000 yen.
  • July 1955
    Koganei started of manufacturing the parts of Honda Motor Co., Ltd.’s two-wheeled vehicles.
  • January 1970
    Company’s capital increased to 4,000,000 yen.
  • December 1970
    Company’s capital increased to 8,000,000 yen.
  • March 1973
    Koganei established Maebashi plant at 2081 Yamakoda, Shinto-mura Kitagunma-gun, Gunma Prefecture, and started mass-production.
  • December 1973
    Company’s capital increased to 16,000,000 yen.
  • February 1975
    Company’s capital increased to 32,000,000 yen.
  • April 1975
    Koganei started machining jet engine parts for Ishikawajima Harima Heavy Industries Tanashi plant.
  • August 1975
    KYB Co., Ltd. Accepted an order of aircraft hydraulic parts and brake parts for Sagami Plant.
  • November 1977
    Company’s capital increased to 48,000,000 yen.
  • August 1978
    Company’s capital increased to 80,000,000 yen.
  • November 1980
    Machining jet engine parts machining for Rolls-Royce (via Ishikawajima-Harima Heavy Industries Co., Ltd.).
  • March 1990
    Koganei fully renovated the former Kokubunji main office and plant.
  • May 1995
    Accepted an order of Ilmor (Mercedes-Benz) F1 parts.
  • June 1998
    Accepted an order of BMW F1 parts.
  • December 1998
    Maebashi fifth plant starts its operation.
  • December 1999
    Accepted an order of Audi prototype parts.
  • August 2000
    Accepted an order of semiconductor production equipment parts.
  • June 2002
    Accepted an order of Porsche engine parts.
  • December 2003
    ISO 14001 certification (headquarters Sayamadai Plant).
    ISO 9001 certification (headquarters Sayamadai Plant).
  • October 2005
    Established KOGANEI USA Inc. until June 2016.
  • May 2006
    Koganei transferred the main office and plant to Iruma, Saitama Prefecture.
  • June 2007
    Yusuke Kamoshita appointed president and chief executive officer, replacing Reijiro Kamoshita.
    Koganei was recognized by the Japanese Small and Medium Enterprise Agency as one of Japan’s Top 300 Vigorous Small and Medium Enterprise Manufacturers.
  • March 2008
    Koganei cosponsored Tokai University’s Le Mans Project.
  • October 2009
    Koganei cosponsored Tokai University’s Le Mans Project.
  • January 2011
    Koganei began implementing GHP.
  • July 2012
    ISO 14001 certification (Maebashi Plant).
    ISO 9001 certification (Maebashi Plant).
  • February 2013
    IHI H3 rocket engine case order received.
  • June 2013
    70th anniversary celebration to be held.
  • October 2013
    JIS Q 9100 certification (headquarters Sayamadai Plant, Maebashi Plant).
  • November 2013
    To replace Gentaro Kamoshita, Reijiro Kamoshita was appointed as Representative Director and Chairman.
  • February 2014
    Maebashi Haruna Plant opened.
  • April 2014
    Introduced the water jet (Flow/Mach 4c 2020c).
  • December 2014
    Koganei Vietnam opened.
  • May 2015
    To exhibit 2015 Automotive Engineering Exposition.
  • October 2015
    Rolls-Royce TRENT XWB parts order received.
  • July 2016
    Introduced the 3D printer (Stratasys/Fortus 450mc).
  • February 2017
    Sayamadai 2nd Plant started to operate.
  • March 2017
    Selected as one of the Top 100 New Diversity Business Management Enterprises from the Ministry of Economy, Trade, and Industry.
    Selected as one of the Top 300 Expanding Small and Medium Enterprises and Small Scale Enterprises 2017 from the Ministry of Economy, Trade, and Industry.
  • May 2018
    Selected as one of the 50 companies promoting employment of highly skilled foreign workers by the Ministry of Economy, Trade and Industry.
  • May 29th, 2018
    H.E. Mr. Tran Dai Quang, President of the Socialist Republic of Vietnam, visited our Maebashi factory as a national guest.
  • February 2019
    Special Award for Distinguished Service 2 recipients (50 years long time service)
  • August 2019
    Special Award for Distinguished Service 1 recipient (50 years long time service)