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Latest update: 30/11/2016 18:25:48

Hiroshima Seiki Co., Ltd.

We are contributing to the industry as a manufacturer specialized in precision gears.

We were established in 1946 as a manufacturer of precision gears. Our products have been widely adopted for a wide range of fields from automotive parts to river and dam water gates, vessel turbines, pumps, and machine tools. They are also used for medical equipment and general industrial machines. We can meet various customer needs for gears from 1 to 1,800 mm in diameter, and from module 0.2 to module 100 or more. We have many customers among major companies in Japan, such as Mitsubishi Heavy Industries, IHI, and Hitachi. Our company also has experience in doing business with Japanese companies overseas, such as Iseki-Changzhou Mfg. Co., Ltd., Yanmar Agricultural Machinery Manufacturing (China), and Changzhou Bridgestone. We have acquired patents.

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Other presentation

[Company strength]
Our mainline business is to manufacture various gears. We design, machine, assemble, test, and maintain speed reducers and various other units as well as multiple kinds of dedicated machines. Our unique real-time production management system supports short turnaround times. Our core competence is total management technology for all processes from basic design, drafting, and testing to single-piece or mass production. We make use of the high proposal and technical power we have been accumulating for over 70 years to implement very safe products for high-speed control, resolution, and durability. They support any kind of mechanism, material, and processing.

[Business description]
Our company was established in 1946 as one of the few precision gear manufacturers in Hiroshima. We have been growing steadily due to our constant efforts in designing and manufacturing speed reducers and assembly machines. Gears are indispensable as machine elements and they are in demand in a wide range of fields. Applicable fields include agricultural and construction machines, iron-making equipment, general and special vehicles, river and dam water gates, vessel turbines, pumps, machine tools, medical equipment, and leisure equipment. We continue to be a manufacturer that takes on challenges to support our entire society as well as the machine industry.

General machine and instrument manufacturing

[Strength of products/technologies]
We provide gears, speed reducers, and mechanical parts in any quantity and size for any kind of equipment. This includes industrial equipment for domestic Japanese and overseas markets, consumer equipment, public works equipment, and special equipment. The consumer equipment category includes products for iron-making, ships, automobiles, printing, food processing, packaging, leisure, spinning, and medical care. Public works equipment includes water gate devices for local governments and the Ministry of Land, Infrastructure, Transport and Tourism and pumps for waterworks and sewerage. Special equipment products are mounted on specially equipped vehicles for the Ministry of Defense and other purposes. We provide standard or special gears and planetary speed reducers, either cycloidal or trochoid, ranging from 1 to 1,800 mm in diameter and from module 0.2 to 100 or more. This is done by making the most of about 100 machine tools. We have a perfect quality assurance system based on cutting-edge machining equipment and the latest coordinate measuring machine by Zeiss (Germany).

[Representative's message]
Customer needs are the motive power for taking on challenges in any age. Our company aims to be a convenience store for the manufacturing industry, and capable of meeting needs immediately. We will continue to give shape to what customers have in mind and please more customers by meeting their requests.

[Company structure for market development/overseas expansion]
Our sales and engineering department serves customers as a liaison with backup by the manufacturing, quality assurance, and general affairs departments. We are applying all our energies to customer support under our in-house progress management system. Our overseas site (Changzhou, in Jiangsu, China) can locally supply products of the same quality as in Japan, and it exhibits the various advantages of overseas production.

[Market share/Ranking]
Top product share in the industry: Automatic analyzers for medical biopsies and mechanical parts for X-ray, ultrasonic, and magnetic image diagnosis systems.

[Awards and media coverage]


ISO 9001:2008 and ISO 14001:2004 certification.

[Main Clients / Business History (domestic)]
Mitsubishi Heavy Industries, Ltd., IHI Corporation, Hitachi Medical Corporation, Kobelco Construction Machinery Co., Ltd., Mazda Motor Corporation, Aisin Seiki Co., Ltd., Katayama Chain Co., Ltd., Hokoku Kogyo Co., Ltd., Bridgestone Corporation, Shinko Co., Ltd., Citizen Machinery Co., Ltd., Shimane Shimadzu Corporation, Kubota Corporation, ShinMaywa Industries, Ltd., Furukawa Mfg. Co., Ltd., Yamabiko Corporation, Okudaya Giken Co., Ltd., Satoshoji Corporation, Toho Car Corporation, Murata Machinery, Ltd., Nabtesco Corporation, Iseki & Co., Ltd., Yanmar Co., Ltd., The Chugoku Electric Power Co., Inc., Fumakilla Limited, Nippon Steel & Sumitomo Metal Corporation, etc.

[Main Clients / Business History (overseas)]
Iseki-Changzhou Mfg. Co., Ltd. (consignment processing and assembling), Yanmar Agricultural Machinery Manufacturing (China), Changzhou Bridgestone (consignment processing and assembling), Katayama Chain, etc.

This company is recommended by the following support organizations.

Chugoku Head Office, SMRJ