1920:
Founded in Osaka city.
1933:
Started the production of the gear hobbing machine.
1956:
Started the production of the hob sharpening machine.
1969:
Inaugurated the Izumo plant in Shimane, started operation.
1990:
Started the production of the gear honing machine.
1999:
Started the production of the generating gear grinding machine.
2007:
Established SEIWA GEARTECH (CHINA) CO.,LTD. in Nanjing, China.
