ESRmotors.com - Electric Motors | Drives | Gearboxes - Toshiba, Siemens, US Motors, Baldor, Benshaw,, ESR Motor Systems is a distributor of electric motors, drives, controls, and gearboxes and one of the largest distributors nationally for Toshiba, Siemens, and US Motors. ESR Motor Systems' customers include industrial end users, OEM's, contractors, and resellers that benefit from our inventory, experience, and high level of service. ESR is located in Rock Hill, South Carolina just outside of Charlotte North Carolina.