MITSUI SEIKI

In 1928, the company manufactured measuring instruments, including block gauges and micrometers. Mitsui Seikis quest for "precision" had begun. In 1935, the company developed our first medium sized “#4” Jig Boring mac......In 1928, the company manufactured measuring instruments, including block gauges and micrometers. Mitsui Seikis quest for "precision" had begun. In 1935, the company developed our first medium sized “#4” Jig Boring machine to Japan’s delight. For many years the country wanted their own jig boring technology rather than importing it. They referred to it as Japan’s first “mother” machine because it was primarily used by other machine tool builders to make their critical precision components. It helped spark a fledgling machine tool industry in Japan. Since then, jig boring machines have become synonymous with the label “mother machines” worldwide. Currently, Mitsui Seiki offers a lineup of machines extending from jig boring machines, jig grinders, horizontal and vertical machining centers, to 5-axis machining centers and screw grinders that support the world’s leading industries. Fusion of Ideal Environment and Dexterous Skills A Mitsui Seiki machine is created with a combination of highly advanced design, engineering, processing, assembling and measuring skills. In addition, an optimal factory environment that takes into consideration factors such as temperature is essential. Our dexterous skills handed down over the last 70 years, and our factory environment, allow Mitsui Seiki to create these extraordinary machines. Mitsui Seikis Machine Tools Division moved from Tokyos Ota Ward to Kawajima Town in Saitama Prefecture in October 2001. In the history of Mitsui Seiki, from its inception until today, “the ultimate in precision” has continued to be our central focus, our reason for existence. That will remain at our core for years to come. Here is a brief timeline of our hallmarks in manufacturing: 1928 Founded as the first Japanese company to manufacture precision machine tools 1942 Merged with Mitsui Kosaku Kikai K.K. and Mitsui Seiki Kogyo was established. 1981 Consolidated the Okegawa Factory into the Kawajima-Machi, Saitama Pref., expanding the new Kawajima Factory 1994 The office headquarters were moved to Shimomaruko, Ota-Ku, Tokyo 1995 The Tokyo Factory and the Kawajima Factory were ISO9001 certified 2001 New, larger capacity, environmentally controlled machine tool factory opens in Kawajima. The Tokyo factory consolidated into the Kawajima factory to establish a new state of the art, world-class manufacturing plant. 2002 The headquarters were ISO14001 certified. 2007 Factory Expansion of Environment Controlled Assembly area for increased manufacturing capacity opens.