SDP/SI - Stock Drive Products/Sterling Instrument is a U.S.-based manufacturer of power transmission and motion control products, serving customers since 1950. The company specializes in precision gears, high-quality mechanical components, gearboxes, and the assembly of both mechanical and electromechanical subassemblies. SDP/SI is part of the Designatronics family of brands, offering a wide range of stock mechanical component options and customized solutions to meet diverse engineering needs.
Southern Gear & Machine is celebrating 60 years of leading the way in custom precision gear manufacturing. Our ongoing investment in technology and personnel keeps us on the cutting edge of gear manufacturing, providing the highest quality gears to the world's most demanding industries.
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