President and CEO Akihisa Miwai

Our gears will continue to move the world!

Gears, bearings, screws. These have long been called the "three major elements of machinery" and have been regarded as important.

Gears are used on a wide range of machinery including steel manufacturing and transport equipment, and have contributed significantly to the development of industry and culture. In recent years, gears have become the focus of attention as power transmission systems have been upgraded in response to the increasing speed and size of industrial machinery.

Since its inception in 1916, Sumitomo Heavy Industries Gearbox Co., Ltd., has been the top manufacturer of gears in Japan, manufacturing international-standard high-precision gear products, and achieving great commercial success against the background of its one hundred years of tradition and accomplishment.

Our gear transmissions are used in Japan and around the world on power generation equipment, cement mills, river pumps, conveyors, cranes, and other equipment supporting industry.

We have utilized the knowledge and experience gained from these successes to pursue research and development of new technology, new products, and applications that meet the requirements of gear transmissions for “compactness, weight-reduction, high efficiency, and high precision.”

As a member of the Sumitomo Heavy Industries Group and originator of the Sumitomo Drive Technologies global brand in the gear transmission business, we will supply product solutions and services to meet the requirements and expectations of our customers and aim to further evolve as a top manufacturer of power transmission systems specializing in gears and gear equipment.


Sumitomo Heavy Industries Gearbox Co., Ltd.
President and CEO
Akihisa Miwa