We are a "A Leading Transmission System Manufacturer" that has been manufacturing international-standard high-precision gear products for 100 years since our establishment.

Our gears are used in all fields such as power generation equipment that support lifelines, large mills that grind cement, river pumps, and machinery and equipment for steelmaking and plastics as the most efficient large power transmission systems. As an unsung hero that support the industrial foundation, we have earned a top-class share in Japan.

Our products ＆ service have expanded into the global market through cooperation with the global network of Sumitomo Heavy Industries Group.