| 1929 |
Uichi Yuki founded Yuki Mfg. Works, an automobile repair shop in Tokyo. |
| 1940 |
Succeeded in producing hydraulic honing machines, hydraulic vane pumps, and various types of hydraulic control valves, building up a base as a manufacturer of hydraulic equipment. |
| 1946 |
Manufactured vane pumps, pressure control valves, flow control valves, directional control valves. |
| 1951 |
Developed 70 bar oil motors and pumps. |
| 1954 |
Developed solenoid operated directional valves. Made first hydraulic power unit. |
| 1956 |
Reorganized into Yuken Kogyo Co., Ltd. with capital of ¥6 million. |
| 1960 |
Built the Fujisawa factory. |
| 1964 |
Moved the head office to Fujisawa, Kanagawa Prefecture. |
| 1966 |
Developed DSG-01, cetop 3 valves. |
| 1969 |
Founded Taiwan Hydraulics Mfg. Co., Ltd. (joint venture). |
| 1970 |
Opened the Research & Development Center and the Sagami factory in Kanagawa Prefecture (current Sagami factory). |
| 1970 |
Listed its stock on the First Section of the Tokyo Stock Exchange. Capital: ¥1.2 billion. |
| 1971 |
Innovated, developed and introduced proportional technology. Received Technical Development Award from Japan Oil Hydraulic & Pneumatic Academic Association. |
| 1972 |
Developed 400 bar vane pumps. |
| 1975 |
Developed low noise vane pump. |
| 1976 |
Founded Yuken India Ltd. (joint venture). |
| 1978 |
Founded Yuken Kogyo (Hong Kong) Co., Ltd. |
| 1978 |
Innovated, developed and introduced K Series Solenoid Directional valves. |
| 1979 |
Founded Hokuriku Yuken Co., Ltd. (sales company). |
| 1979 |
Developed A Series variable piston pumps. |
| 1980 |
Founded Yuken (U.K.) Ltd. in the United Kingdom. |
| 1981 |
Developed Rubber Pad Forming Presses. Received award from The Japan Society for the Promotion of Machine Industry. |
| 1982 |
Developed servo valve technology. |
| 1983 |
Developed DSLHG series multi poppet solenoid valves. |
| 1986 |
Innovated, developed and introduced Proportional on board technology. Received award from The Japan Society for the Promotion of Machine Industry. |
| 1987 |
Founded Yuken Service Co., Ltd. |
| 1987 |
Developed low current signal solenoid directional valves. Developed high pressure, high flow DSG-03. |
| 1988 |
Developed AR series piston pumps. |
| 1989 |
Innovated, developed and introduced G-series shockless valves with adjustable ramp times. |
| 1994 |
Developed Kiriko metal chip compacting presses. |
| 2001 |
Founded Yuken Hydraulic (Dongguang) Co., Ltd. in China. |
| 2001 |
Innovated, developed and introduced LSVG/LSVHG servo valves with 2ms response, dirt tolerance, size to cetop 10. |
| 2001 |
Developed intelligent hydraulic servo drive packs. |
| 2004 |
Moved the head office to the Sagami plant. Integrated the Fujisawa factory into the Sagami plant. Built a new factory in Sagami (Head Office and Sagami Plant). |
| 2004 |
Developed high pressure, high flow, low pressure drop DSG-01. |
| 2006 |
Founded Yuken Hydraulics (Zhangjiagang) Co., Ltd. in China. |
| 2007 |
Founded Yuken Korea Co., Ltd. |
| 2008 |
Innovated, developed and introduced servo drive motor pumps sets. ASR, ASE. Energy saving, rapid response. |
| 2010 |
Founded Yuken Kgyo (Shanghai) Co., Ltd. |
| 2010 |
Developed on board control for servo valves. Received Japan Society of Mechanical Engineers. Excellent Product Award. |
| 2012 |
Founded YUKEN SEA CO., LTD. in Thailand. |
| 2013 |
Founded Yuken Kogyo (Foshan) Co., Ltd. |
| 2013 |
Developed A3HG piston pumps. High pressure, high speed, high flow, high efficiency. |
| 2014 |
Developed range of high response proportional valves – ELDF(H)G. Servo valves response times, dirt tolerant. |
| 2015 |
Developed range of on board controls for ELDF(H)G. Size up to cetop 10. |
| 2017 |
Developed A3HM range of pumps. |
