Suganuma Seisakusho Co., Ltd.

Company Profile

Company Name Suganuma Seisakusho Co., Ltd.
Representative Nobuyuki Suganuma
President and CEO
Established December 1, 1939
Employees 74
Head Office JRE Omori Station East Exit Building 4F, 1-5-1 Omori-kita, Ota-ku, Tokyo, 143-0016 Japan
Manufacturing Facilities, Branches and Subsidiaries Tsukuba Factory: 1130 Nekozane, Bando City, Ibaraki, 306-0616 Japan
Domestic: 4 locations (Shizuoka, Nagoya, Osaka, K ita-Kyushu)
CapitalJPY 96 million
Net SalesJPY 1,300 million (As of May 2022)


Since our foundation in 1893, we have been advancing and maintaining the quality of our overhead contact fittings. We manufacture all kinds of products around messenger wires such as Hanger Ear sustaining the tollory wires, steel products/signs attached to Electric poles, etc.

In addition to the Hokuriku/Hokkaido Shinkansen business, in recent years, we also have been working actively on overseas railway electrification.

Overseas performance

  • Strand Line / Myanmar
  • Jabotabek Railway / Indonesia
  • Vietnam Ho Chi Minh City Railway Line 1 / Vietnam
  • Jakarta Urban High Speed Rail / Indonesia
  • Taiwan High Speed Rail / Taiwan

Products and Services

Hanger Ear Type B (Left), Type D (Right)
Combination Example: Hanger Ear + Messenger wire protector
Connector Fitting (Hallow Screw type, Connector Clamp)
Pull-off Arm Type Arch (Left), Double Ear (Right)