WELCOME Home Company Products Downloads Contacts SEM – controlled motor technology Providing the Highest Quality and Performance through Continuous Innovation Dear Customer, A world class designer and manufacturer of AC permanent magnet servomotors and asynchronous spindle motors, SEM has over 100 years of experience in producing rotating electrical equipment. Proud of its reputation, SEM is a volume manufacturer of high quality motors with a focus on supporting the machine tool industry. © 2021 SEM