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Seiwa G-TEC Inc.

Japanese machine tool manufacturer specializing in gear processing machines, with over 100 years of history.

Last updated September 29, 2026

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Overview

Seiwa G-TEC Inc. is a Japanese machine tool manufacturer headquartered in Izumo, Shimane Prefecture, with a sales headquarters in Osaka. The company was founded in 1920 in Osaka and was originally incorporated as Seiwa Iron Works Co., Ltd. in 1949. In April 2023, it changed its name to Seiwa G-TEC Inc. The company specializes in the manufacture of gear processing machines and tool grinding machines, marketed under the SEIWA brand. Its products are used primarily in the automotive industry and are active in more than 20 countries worldwide. The company has a long history of technological innovation, including the development of gear cutting machines starting in 1929, the first practical NC hobbing machine in 1968, and various CNC gear honing, grinding, and hobbing machines under the LUXIS, FABRIS, and ARTIS series. It established a subsidiary in Nanjing, China in 2007. The company celebrated its 100th anniversary in 2020.

History

Seiwa G-TEC Inc. traces its origins to 1920, when it was founded in Osaka, Japan. In 1929, the company began development of gear cutting machines, marking its entry into the specialized field of gear processing. In 1949, it was formally incorporated as Seiwa Iron Works Co., Ltd. (清和鉄工株式会社). The company continued to innovate, starting production of hob groove grinding machines in 1956. A major milestone came in 1968 with the successful commercialization of Japan's first NC hobbing machine. In 1969, the Izumo Plant was completed in Shimane Prefecture, expanding production capacity. In 1990, the company began manufacturing the LUXIS-GH254 CNC gear honing machine, followed by the LUXIS-PG256 CNC gear grinding machine in 2000 and the FABRIS-HR255 CNC hob groove grinding machine in 2002. In 2007, it established a local subsidiary in Nanjing, China, named Nanjing Seiwa Gear Technology Co., Ltd. (南京清和歯輪科技有限公司). Further product launches included the LUXIS-GH256 CNC gear honing machine in 2012 and the ARTIS-HB056 CNC horizontal hobbing machine in 2014. The company celebrated its 100th anniversary in 2020. In 2022, it announced the ARTIS-PS106 CNC power skiving machine. In April 2023, the company changed its name from Seiwa Iron Works Co., Ltd. to Seiwa G-TEC Inc. (清和ジーテック株式会社). Today, the company continues to specialize in gear processing machines and tool grinding machines, with its SEIWA brand machines operating in over 20 countries, primarily serving the automotive industry.

  • 2023

    Changed company name to Seiwa G-TEC Inc.

  • 2022

    Announced ARTIS-PS106 CNC power skiving machine

  • 2020

    Celebrated 100th anniversary

  • 2014

    Started manufacturing ARTIS-HB056 CNC horizontal hobbing machine

  • 2012

    Started manufacturing LUXIS-GH256 CNC gear honing machine

  • 2007

    Established Nanjing Seiwa Gear Technology Co., Ltd. in Nanjing, China

  • 2002

    Started manufacturing FABRIS-HR255 CNC hob groove grinding machine

  • 2000

    Started manufacturing LUXIS-PG256 CNC gear grinding machine

  • 1990

    Started manufacturing LUXIS-GH254 CNC gear honing machine

  • 1969

    Izumo Plant completed in Shimane Prefecture

Products and positioning

High-precision gear processing machine tools for automotive and industrial applications, backed by over 100 years of specialized expertise.

  • 1990

    LUXIS-GH254 CNC gear honing machine

  • 2000

    LUXIS-PG256 CNC gear grinding machine

  • 2002

    FABRIS-HR255 CNC hob groove grinding machine

  • 2012

    LUXIS-GH256 CNC gear honing machine

  • 2014

    ARTIS-HB056 CNC horizontal hobbing machine

  • 2022

    ARTIS-PS106 CNC power skiving machine

Sources5 sources

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