About Us

Strength in One

 Strength in One - Three companies, one global provider.

Strength in One

Three companies, one global provider - Sumitomo Drive Technologies.

Sumitomo Drive Technologies brings the products and service expertise of three companies together as one to provide engineered solutions to our industrial power transmission customers.

With installations worldwide, our products are the preferred choice by many of the largest and most recognized global companies. We understand your drive requirements, and through the synergies of our three organizations, we are confident we can provide you with the best solutions available today.

Sumitomo Heavy Industries, Ltd.

At the core of Sumitomo's product line is our Cyclo® Drive, a unique "gearless" gearbox that provides a superior torque dense design for the harshest environments. Over the years, this product evolved into right angle and offset parallel designs that make up the BuddyBox® series of gearmotors. Sumitomo Heavy Industries, Ltd. (SHI) has positioned these power transmission products as one of its core business areas and has worked over the years to enhance its capabilities in the industrial gearbox market. Beginning in 1973, SHI had a licensing agreement in place with Hansen Transmissions for almost 20 years. With this history of collaboration and partnership, the integration of Hansen's expertise and mastery of the large industrial market will allow Sumitomo Drive Technologies to expand our global offerings of engineered solutions and total drive packages. 

 Hansen Industrial Gearboxes

Hansen Industrial Transmissions, NV (HIT) has a rich background dating back to the 1950's when David Hansen revolutionized the design and manufacturing of standard gear units. HIT is experienced in providing complete engineered solutions for their customers with packages including gearboxes, couplings, motors, brakes and base plates. HIT's product lines are customizable for unique market requirements, making them the ideal choice in heavy industrial applications. Sumitomo Heavy Industries, Ltd. acquired HIT in 2011 to expand on our large industrial gearbox product lines. 

Seisa Gear

Seisa has nearly a century of manufacturing experience in highly customized gear drives, highspeed acceleration and reduction gears for compressors and turbine generators, mill drives for cement and coal, and gear couplings. The most demanding and carefully engineered products in the world are made by Seisa Gear. Seisa became a wholly owned subsidiary of Sumitomo Heavy Industries, Ltd. in 2006. 

Locate Your Nearest Representative

Our comprehensive sales and service network extends throughout North and South America. Enter your zip code to find the Sumitomo facility, sales representative, and distributor in your region.


Sumitomo's product Configurator is live! Select the ideal Sumitomo product for your application, download 2-D and 3-D CAD drawings and models, and print out a technical spec sheet of your configuration!
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