| 1971 | Oct | Present President Kazuharu Morimoto founded Morimoto Hard Chrome Industry under private management in Takaida Higashi-Osaka |
| 1977 | Feb | Started selling Plating shaft |
| 1978 | Apr | Incorporated the firm as Morimoto Co. Ltd capitalized at 10 million yen |
| 1983 | Oct | Started selling induction hardening slide shaft |
| 1984 | Dec | Established MORIMOTO SEIMITSU SHAFT CO., LTD (capitalized at 10 million yen) Established the head office in kawamata, Higashi-Osaka, introducing new equipment |
| 1989 | Mar | Renewed Ueno Plant as general processing plant in Ueno, Mie (Iga since November, 2004) and introduced new equipment |
| 1989 | Jun | Started selling Trapezoidal screw |
| 1993 | May | Established Product-management Center in Kawaguchi, Saitama |
| 1993 | Aug | Established Product-management Center in Nishizutumi, East Osaka |
| 1995 | Aug | Extended Ueno Factory and introduced new equipment |
| 1995 | Nov | Started selling Precision ball Screw |
| 1996 | May | Introduced product management and market management system using company's network system |
| 1996 | Aug | Extended Ueno factory |
| 1997 | Feb | Capital increased at 25 million yen |
| 1997 | Dec | Capital increased at 80 million yen |
| 1999 | Jan | Completed Mie Factory as production center for standard model Introduced the latest closed plating equipment |
| 2000 | May | Introduced Linear-shaft Auto-processing Assembling Line in Ueno Factory |
| 2001 | Apr | Introduced DNC-system in Ueno Factory |
| 2001 | Jul | Rebuilt product management and market management system |
| 2003 | Oct | Established the product warehouse and the standard model factory next to Mie Factory and introduced new equipment |
| 2004 | Apr | Established a local subsidiary WUXI MORIMOTO PRECISION PARTS CO., LTD. in Wuxi, China |
| 2004 | Dec | Started running WUXI MORIMOTO PRECISION PARTS CO., LTD |
| 2005 | Feb | Extended closed-plated equipment in Mie Factory |
| 2006 | Apr | Established a local subsidiary TIANJIN MORIMOTO PRECISION PARTS CO., LTD in Tianjin, China |
| 2006 | Jun | Extended plating equipment in Mie Factory |
| 2007 | Jun | Started running TIANJIN MORIMOTO PRECISION PARTS CO., LTD Introduced fully automatic core-less grinder and closed-plated equipment |
| 2008 | Jul | Purchased a lot for factory next to Mie Second Factory |
| 2012 | Jun | Tokyo Office relocated. (Kawaguchi-shi,Saitama-ken) Kawaguchi Logistic center opened. |
| 2013 | Apr | Chubu Office opened . (Nagoya-shi, Aichi-ken) |
| 2013 | Jun | Kyushu Office opened. (Hakata-ku, Hakata-shi, Fukuoka-ken) |
| 2014 | Jan | Kyushu Office relocated. (Hakata-ku, Hakata-shi, Fukuoka-ken) |
| 2014 | Apr | Osaka Office opened . (Higasiosaka-shi, Osaka-fu) |
| 2014 | Dec | MORIMOTO SEIMITSU SHAFT was certified for ISO9001:2008 (Quality Management Standard) and ISO14001:2004(Environment Management Standard). |
| 2016 | Apr | Extended Mie The Second Factory and introduced new equipment. |
| 2017 | Jun | Established a local subsidiary MORIMOTO(Thailand) Co., Ltd. in, Thailand. |
| 2017 | Aug | Build and introduce a standard shaft processing "link system" at the Ueno factory. |
| 2017 | Nov | Built new headquarters building and moved to Nagatanishi, Higashiosaka-shi, Osaka. |
| 2017 | Dec | Chubu Office relocated. (Nishi-ku, Nagoya-shi, Aichi) |
| 2018 | Jan | Started running MORIMOTO(Thailand) Co., Ltd. |
| 2018 | Nov | Started running Wuxi second factory. |
| 2019 | Jun | Chubu Office relocated. (Nishi-ku, Nagoya-shi, Aichi) |