The Ohta Period(since 1912)
1912
Later, the company name was changed to Ohta Automobiles Co., Ltd.
1922
1935
Sukeo's sons Yuichi and Sukeshige became key members in developing styling, designing, and production, and the company became a leading compact car manufacturer in Japan.
1936
Founding of Ohta
Founding of Ohta Sukeo Ohta established the Ohta Automobiles Co., Ltd in Kozuka, in the suburb of Sugamo. It started developing prototypes for airplane engines.Later, the company name was changed to Ohta Automobiles Co., Ltd.
1922
Development of the Ohta Model "OS"
Development of the Ohta Model "OS" The factory was relocated to Kanda Yanagihara. A prototype of four-seater Phaeton OS was successfully developed.
1935
Manufacturer
Manufacturer Kousoku-Kikan Industries Co.,Ltd was established with a capital of 1 million yen invested by Mitsui & Co., Ltd., and full-scale production of trucks and compact cars was started.Sukeo's sons Yuichi and Sukeshige became key members in developing styling, designing, and production, and the company became a leading compact car manufacturer in Japan.
1936
Tamagawa Speedway
Tamagawa Speedway The company captured victory in a domestic compact-car race, in the First All-Japan Automobile Race hosted by Hochi Shimbun. The championship was also won in the third race, but with the war becoming more severe, the production capacity of compact cars had to be reduced.
Ohta Shoukai Co., Ltd Period(since 1946)
Late Ohta Period(since 1937)
1946
1937～
Establishment of "Ohta Shoukai Co., Ltd"
Establishment of "Ohta Shoukai Co., Ltd" Sukeo's third son, Sukeshige Ohta, became independent and established Ohta Shoukai Co., Ltd. He opened an auto repair shop in the midst of the postwar period when goods were still scarce. He then designed and manufactured racing cars for public auto racing, tuning, etc. Later, Kousoku-Kikan Industries Co.,Ltd. fell on hard times and merged with Tokyu Kurogane Automobiles Co.,Ltd.
1937～
Ohta during wartime
Ohta during wartime
September 1937
Kousoku-Kikan Industries Co.,Ltd became a part of Tachikawa Airplane by military order.
1940
Prohibition of passenger car production
1942
Production of freight vehicles stopped
1947
Kousoku-Kikan Industries Co.,Ltd resumed automobile production with the approval of GHQ.
1957
1952～
Japan's first light-weight truck (350 kg or less)
Japan's first light-weight truck (350 kg or less) The company developed a prototype light-weight truck for Yanmar.
1952～
Ohta Jidosha
Ohta Jidosha
1952
Kousoku-Kikan Industries Co.,Ltd changed its name to Ohta Jidosha.
January 1955
After applying under the Corporate Rehabilitation Law, Sukeo Ohta assumed the position of Representative Director in March. The number of employees became 695.
April 1956
Sukeo Ohta passed away.
1958
1957～
Kurogane Baby
Kurogane Baby A prototype of "Kurogane Baby," a 360cc engine light four-wheel vehicle was designed and manufactured at Ohta Shoukai Co., Ltd.
1957～
Legacy of Ohta's Technology
Legacy of Ohta's Technology
April 1957
Ohta and Kurogane merged.
1962
Although production levels reached 25,000 units, the company was absorbed by the current Nissan Koki Co., Ltd. due to a business slump, and engine technology from the Ohta era is still being used.
From Establishment of Tamachi Industries Co., Ltd. to the Present(since 1962)
1962
1964
1969
1981
1998
2000
AIM Corporation was established in California to strengthen exports to the United States.
2002
2007
2009
2012
2014
The company won the FIA World Endurance Championship (WEC) Toyota TS040 title for the year.
2015
The JTEKT GC20Mi, a small-diameter φ60 / φ70 whetstone specification cam grinder was introduced.
Designing, manufacturing, and responding to prototype production and medium-volume production of general-purpose assembly camshaft devices continued.
2017
The DMG MORI DMC65 (high-performance simultaneous 5-axis machining center) and CTX250 (combined machine) were introduced.
The company started reinforcing its design and development and receiving engineering consignment services.
2018
Development of the land adjacent to Nishifuji Plant was begun.
Establishment of Tamachi
Establishment of Tamachi Sukeshige established Tamachi Industries Co., Ltd. with a capital of 2,000,000 yen at Tamachi 8-chome, Minato-ku, where Ohta Shoukai Co., Ltd had been located.
1964
Working with Toyota
Working with Toyota Business was started with the Toyopet Service Center Special Development Office, predecessor of the current Toyota Customizing & Development Corporation around this time,. The company took most of the orders related to engines for Grand Prix and chassis conversions.
1969
Development and sales of small Formula cars
Development and sales of small Formula cars The 360cc mini Formula car "Nialco" was manufactured and sold. It became popular among motorsports enthusiasts. It later became the "Formula Junior." 1972Start of the third generation of technological inheritance
Start of the third generation of technological inheritance Kunihiro Ohta joined the company 1977Inauguration of the third-generation President
Inauguration of the third-generation President Kunihiro Ohta became Representative Director 1978The camshaft becomes mainstream
The camshaft becomes mainstream A fully automatic imitative Norton cam grinder was introduced.
1981
Dawn of the new machine, NC
Dawn of the new machine, NC The headquarters factory was moved to Minamioi, Shinagawa-ku. At the same time, the CNC machining center, CNC lathe and surface grinder were introduced. 1982A small/medium-sized company
A small/medium-sized company The CNC cam grinder GCN32-100, manufactured by Toyota Koki, was first introduced. 1986Anticipating the age of high-quality
Anticipating the age of high-quality The "Mitutoyo CMM AE122" was introduced. 1988Opening of second factory
Opening of second factory The company's second factory was opened in Higashi-Kojiya, Ohta-ku. 1991Expansion of the main factory
Expansion of the main factory Anticipating a new era, the company's capital was raised to 10 million yen. The second factory (current Building A) was relocated to Shibakawa-cho, Fuji-gun, Shizuoka Prefecture. A large 5-axis machining center was opened to manufacture magnesium parts for Group C cars.
1998
Started of manufacturing cylinder heads
Started of manufacturing cylinder heads The YASDA horizontal 5-axis machining center YBM800N was introduced.
2000
Building strong credibility
Building strong credibility The company received a commendation from Toyota Motor Corporation for supplying highly-evaluated motorsports parts.AIM Corporation was established in California to strengthen exports to the United States.
2002
Awards continuously received
Awards continuously received The YASDA horizontal 5-axis machining center YBM700NTT was introduced. Also, system was established to respond to high-precision demands. An award was given to commemorate the title following the year 2000.
2007
Entry into medical care
Entry into medical care The ROFIN laser processing machine was introduced. The company acquired KES environmental certification. It also entered the medical industry.
2009
Quality reinforcement
Quality reinforcement The company was certified in quality assurance standard ISO9001. 2010Japan Automotive Hall of Fame
Japan Automotive Hall of Fame Sukeo Ohta was inducted into the 2010 Japan Automotive Hall of Fame.
2012
50th anniversary of Tamachi Industries
50th anniversary of Tamachi Industries Tamachi Industry celebrated its 50th anniversary and Ohta Jidosha's 100th anniversary.
2014
Fourth generation
Fourth generation Kunihiro Ohta was appointed Chairman of the Board. Kiyoshi Yonai was inaugurated as President.The company won the FIA World Endurance Championship (WEC) Toyota TS040 title for the year.
2015
Increase in power
Increase in power The metal laminated SLM500 was introduced.The JTEKT GC20Mi, a small-diameter φ60 / φ70 whetstone specification cam grinder was introduced.
Designing, manufacturing, and responding to prototype production and medium-volume production of general-purpose assembly camshaft devices continued.
2017
Chairman Kunihiro Ohta received conferment of decorations.
Chairman Kunihiro Ohta received conferment of decorations. Kunihiro Ohta received the Order of the Rising Sun Medal.The DMG MORI DMC65 (high-performance simultaneous 5-axis machining center) and CTX250 (combined machine) were introduced.
The company started reinforcing its design and development and receiving engineering consignment services.
2018
Victory at 24 Hours of Le Mans
Victory at 24 Hours of Le Mans The Toyota Gazoo Racing TS050 won the 24 Hours of Le Mans, Round 2 of the FIA World Championship Super Season, for the first time.Development of the land adjacent to Nishifuji Plant was begun.
From 2018 to "Future History"
01
02
03
Metal-laminated SLM500
Metal-laminated SLM500 The company accelerated creation of innovative design parts with customers.
02
Land development
Land development In August 2018, construction was begun as a first step for "Future History."
03
Factory G plan
Factory G plan The company aims to operate a factory making full use of ICT by Spring 2020.
