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Latest update: 27/04/2017 14:06:49

Shiroyama Sangyo Co., Ltd.

We are a specialist manufacturer of electromagnetic iron cores, producing molds by ourselves.

We are a specialist manufacturer of electromagnetic iron cores, engaged in integrated production of highly precise automatic laminated molds of electromagnetic iron cores for motors and transformers, handling everything from manufacturing to pressing by ourselves. We have a high-precision laminated mold technology that molds thin electromagnetic steel sheets with molds and automatically swages layers of such sheets. It can press steel sheets as thin as 0.1 to 1.0 mm. This technology is widely applied to various items ranging from vibrating ultra-compact motors for cellphones to driving electric motors for HEV automobiles. We rank top by quantity of worked electromagnetic steel sheets among specialist manufacturers according to an estimation based on the domestic supply of electromagnetic steel sheet manufacturers.

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Other presentation

[Company strength]
Since the precision of the electromagnetic core greatly affects the performance of the motor, mold processing technology, press working technology, and production technology are indispensable. We produce automatically laminated electromagnetic cores and perform press working by ourselves for integrated production of electromagnetic cores. Only a few companies in Japan can do this. We supply our products to over 250 companies, supporting their production activities.

[Business description]
Manufacture and sale of electromagnetic iron cores for electric devices (motors, transformers, solenoids, etc.) and precision press molds. In particular, we can flexibly produce cores for development prototypes and accurately satisfy varying needs from prototypes to mass-produced items by maximizing our advantages as a specialized manufacturer. We specialize in manufacturing electromagnetic iron cores, and conduct integrated production of highly precise automatic laminated molds of electromagnetic iron cores for motors and transformers, handling everything from manufacturing to pressing by ourselves.

[Industry]
Manufacturing of electromagnetic iron cores and precision press molds

[Strength of products/technologies]
We have a high-precision laminated mold technology that molds thin electromagnetic steel sheets with molds and automatically swages layers of such sheets. It can press steel sheets as thin as 0.1 to 1.0 mm. This technology is widely applied to various items ranging from vibrating ultra-compact motors for cellphones to driving electric motors for HEV automobiles. We provide products ranging from 10 to 1,300 mm in diameter for various applications.

[Representative's message]
Three years ago, we introduced a large, high-precision press machine, set up a new mold factory, and introduced the most advanced equipment. We are upgrading our factories to outperform all other competitors in Japan. We are also hiring more engineers, instructors, and sales personnel. Our service system reliably satisfies the various demands of customers. In addition to mass production, we can develop new products with short delivery periods and supply highly precise products. We provide customers with products that remain in Japan.



[Company structure for market development/overseas expansion]
The development sales section in the sales department handles inquiries for new contracts, production of prototypes, mass production, and winding wire assembly for the next process in partnership with cooperating companies.



[Market share/Ranking]
We lead the industry in terms of the amount of processed electromagnetic steel sheets produced by a specialist manufacturer according to steel makers (estimation based on the domestic supply of electromagnetic steel sheet manufacturers).

[Awards and media coverage]
[Awards]
Selected as “Manufacturing SMEs Who Support Japanese Innovation” of “300 of Japan’s Vibrant Monozukuri (Manufacturing) SMEs,” Small and Medium Enterprise Agency in 2009.

[Media]
Kirari Ichibanboshi in Chunichi Shimbun newspaper, Nikkan Kogyo Shimbun, Chubu Keizai Shimbun, etc.


[Authorization/Certification]
Acquired ISO 9001 and ISO 14001.

[Main Clients / Business History (domestic)]
HEV motors, PHEV motors, and EV motors for automobiles, motors for FA, robots and machine tools, AC compressor motors, motor-assisted automobile motors, eco-friendly power generators, and many others

[Main Clients / Business History (overseas)]
Many, although indirectly.

This company is recommended by the following support organizations.

Chubu Head Office, SMRJ
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