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About Us

Company Profile

Trade name

Taiyo Machinery Mfg. Co., Ltd.


Yoshihiko Mizushi, President & CEO

Business description

Manufacturing of various gears
Machining and assembly of automotive engines and transmission parts

Founded in

November 1943


(Head Office/Factory) 1-26 Funasaka Choda, Sonobe-cho, Nantan-shi, Kyoto 622-0053 


10-minute drive from Sonobe Station (JR Sagano Line)
10-minute drive from Sonobe IC on the Kyoto Jukan Expressway
View in Google Maps

0771-63-1700 (main)


0771-63-1715 (main)

Message from the President

A company that brings together our capabilities and imbues them into our products

Taiyo Machinery was founded in 1943 by my grandfather as a residential space that doubled as a factory.
That was a time when everything was scarce, but our company was founded in a manner that allowed people to gather in the same space and make use of the machines and materials that were available to them to take on the challenge of manufacturing products that would create a more vibrant society and everyday life. Needless to say, manufacturing is not something that can be accomplished overnight, but we created a culture in which our employees came together like a big family and pulled together to contribute to society and our customers, including by exploring new methods to achieve the precision requested by customers and having administrative staff who would take the initiative to provide on-site support for urgent deliveries. It is this workplace culture that we have inherited over the generations and will continue to cherish in the future.
In addition, as a Tier-1 automobile manufacturer, our company has been working to refine our technology and establish a system to achieve QCD for mass-produced products while receiving guidance from various people. As a result of our efforts, our products are now used in automobiles around the world. In recent years, we have also applied our gear technology developed within the automotive industry to robots, industrial machinery, motorcycles, aircrafts, and other areas.
Moving forward, technological innovation is expected to advance rapidly in the fields of electric vehicles, digital transformation, robotics, etc., as we transition into a sustainable society.
We will continue to take on the challenge of manufacturing prototypes, improving the precision of our products, and automating our production processes in order to imbue our capabilities into all kinds of items to make them faster, stronger, and more precise by integrating our gear technology with cutting-edge technology.
All of us at Taiyo Machinery are committed to building a company that provides novel value to our customers and the society at large as an indispensable, one-of-a-kind company. We look forward to your continued support of Taiyo Machinery.


Yoshihiko Mizushi, President & CEO

Corporate History

Nov 1943

Founded as “Taiyo Koku Kogyo, Inc.” in Yamanouchi, Ukyoku, Kyoto

Jun 1958

The head office moved to Kujo Factory and was renamed “Taiyo Kikai Kogyo, Inc.”

May 1978

“Kameoka Factory” was built in Kameoka, Kyoto
Machinery division (automotive division) was moved from Kujo Factory
Electric division was moved from Yamanouchi Factory

Nov 1985

“Oi Factory” was built in Oicho, Kameokashi
Electric division was moved from Kameoka Factory

Apr 1992

“Sonobe Factory” was built in Sonobecho, Funaigun, Kyoto (present Sonobecho, Nantanshi)
Gear production for small-sized FR manual transmission commenced

Jan 1993

Large-sized FR manual transmission assembly started

Mar 1998

2,400 square meters extension of Sonobe Factory completed

Jan 2001

Cogeneration system operation started

May 2001

3,600 square meters extension of Sonobe Factory completed

May 2002

Sonobe factory acquired ISO 14001 certification

Dec 2003

Electric division acquired ISO 9001 certification

May 2004

Heat treatment plant was completed in Sonobe Factory

Apr 2007

Electric division became independent as “Taiyo Aquris, Inc.”

May 2007

1,200 square meters extension of Sonobe Factory completed



We help speed up your development and production

Taiyo Machinery Mfg. Co., Ltd.

1-26 Funasaka Choda, Sonobe-cho, Nantan-shi, Kyoto 622-0053

© Taiyo Machinery Mfg. Co., Ltd. All Rights Reserved.

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