Mitsubishi MDS-EJ-SP-20 Spindle Drive Unit

The Mitsubishi MDS-EJ-SP-20 (MDS-EJ-SP-20) is a spindle drive unit designed for use with Mitsubishi CNC systems and MDS-EJ series machine tool drive architectures. This compact unit controls AC spindle motors, delivering precise velocity regulation and dynamic motor control required for high-accuracy machining operations. Operating on a three-phase AC input voltage rated at 200 V to 230 V AC (200 V class, 220/230 V AC), the drive provides a rated output current of 4.5 A. Engineered for industrial environments, it features an IP20 protection degree enclosure to safeguard internal components against solid foreign objects. The drive unit is rated for continuous operation in ambient temperatures ranging from 0 to +55 degrees Celsius. Commonly deployed in CNC lathes, milling machines, and machining centers utilizing Mitsubishi electric automation, the MDS-EJ-SP-20 ensures stable spindle performance, energy efficiency, and seamless integration with compatible numerical control platforms.