| 1946年11月 |
Founder, Mr.Iwao Sakamaki, established SAKAMAKI IRON WORKS to produce wood working machinery. |
| 1949年05月 |
Start of manufacturing of Hemp-textile Sewing Machines. |
| 1951年04月 |
The factory was transferred to Drill Chuck manufacturing. |
| 1951年06月 |
The organization was changed to a corporation, named SAKAMAKI MFG. CO.,LTD. |
| 1957年10月 |
Nation-wide “YUKIWA” Group (Sales Network) was organized. |
| 1957年12月 |
Approval of JIS indication on chucks for portable electric power drills. |
| 1962年03月 |
Start of manufacturing of Collet Chucks. |
| 1963年10月 |
Approval of JIS indication on Drill Chucks for machine tools. |
| 1965年02月 |
Opening of Tokyo office. |
| 1965年05月 |
Tap Chucks developed. |
| 1966年09月 |
Manual Index Tables developed. |
| 1967年11月 |
Automatic Index Tables developed. |
| 1968年07月 |
KAWAGUCHI FACTORY built. |
| 1970年07月 |
Start of manufacturing of Keyless Drill Chucks. |
| 1971年09月 |
Quick Chucks developed. |
| 1972年09月 |
Opening of Osaka office. |
| 1975年08月 |
Tap Holders developed. |
| 1976年06月 |
NC Rotary Tables developed. |
| 1978年11月 |
Start of manufacturing of Drill Chucks for Hobby-use. |
| 1980年08月 |
KOHWA SEIKI CO., LTD. established. |
| 1982年01月 |
Drill Mill Chucks developed. |
| 1983年05月 |
Start of manufacturing of Duplex-holding Tools. |
| 1983年08月 |
KAINOSWA Factory built. |
| 1984年03月 |
Our Drill Chuck was equipped with Space Shuttle “Challenger” and has been used for space works. |
| 1984年10月 |
KAINOSWA Factory built more. |
| 1984年10月 |
Development of NC Coupling Index Rotary Tables. |
| 1986年12月 |
Pencil Mill Chucks developed. |
| 1987年09月 |
CNC Rotary Table SNC Series developed. |
| 1988年04月 |
Mr. Iwao Sakamaki assumes the chairman, and Mr. Kazuo Sakamaki assumes the president. |
| 1988年12月 |
Keyless Drill Chucks for cordless electric drills developed. |
| 1989年11月 |
Corporate name changed to YUKIWA SEIKO INC. |
| 1990年03月 |
Awarded with Economics Promotion Prize of Niigata Pref. |
| 1990年08月 |
Private Placement Bond issued. |
| 1991年08月 |
Opening of new Head Office & Factory. |
| 1991年09月 |
Establishment of YUKIWA SEIKO U.S.A., INC. in North Carolina. |
| 1992年03月 |
YUKIWA INTERNATIONAL INC. established. |
| 1993年05月 |
Opening of Nagoya office. |
| 1994年03月 |
Super G1 Chucks developed. |
| 1995年11月 |
CNC Rotary Table “YNC Series” developed. |
| 1996年09月 |
KAINOSWA Factory built more. |
| 1997年08月 |
Approval of ISO9001. |
| 1999年02月 |
New Drill Mill Chucks developed. |
| 1999年07月 |
All-metal Sleeve Keyless Chucks for Portable Drills developed. |
| 1999年10月 |
Shrink-fit-holders developed. |
| 2000年01月 |
Controller “BC1” for CNC Rotary Table developed. |
| 2000年02月 |
Awarded JSAI “Matsubara Invention Prize” for Keyless Drill Chucks with Lock Device. |
| 2000年11月 |
Awarded “Technology Prize” of Niigata Prefectural Governor. |
| 2000年11月 |
CNC Tilting Rotary Table “TNT Series” developed. |
| 2001年04月 |
Awarded with Minister of Science and Technology at development of industrial chucks. |
| 2002年05月 |
KAINOSWA Factory built more. |
| 2003年01月 |
CNC Rotary Table “JNC Series” developed. |
| 2003年03月 |
Tokyo office - moving to the new location. |
| 2003年12月 |
Approval of ISO14001. |
| 2004年11月 |
Direct Drive CNC Rotary Table developed. |
| 2005年01月 |
Hybrid G1 Chucks developed. |
| 2006年08月 |
Approval of ISO9001:2000. |
| 2008年04月 |
Approval of new JIS mark indication on Drill Chucks. |
| 2008年05月 |
Kazuo Sakamaki, president, awarded “Medal with Yellow Ribbon” at development of industrial chucks. |
| 2008年11月 |
Opening of YUKIWA SEIKO INC. SHANGHAI REP. OFFICE. |
| 2009年12月 |
Elected as one of 1400 Job-Creating Companies by Ministry of Economy, Trade and Industry. |
| 2011年08月 |
Green G1 Chucks developed. |
| 2012年10月 |
Green G1 Chucks win the "Good Design Award" by Japanese design promotion meeting sponsorship. Also elected as "Good Design best 100." |
| 2012年11月 |
Green G1 Chucks win the "Frontier Good Design Award." (The Award of President of Small and Medium Enterprise Agency) |
| 2013年11月 |
All stainless keyed drill chucks developed. |
| 2014年07月 |
Collet Chucks "A series and B series" developed. |
| 2014年11月 |
2nd factory at Head Office built. |
| 2015年05月 |
Satsumashiranami circle awarded the Niigata prefectural governor award at the Niigata district QC circle meeting. |
