Mitsubishi MDS-D-SPJ3-55 Spindle Drive Unit

The Mitsubishi MDS-D-SPJ3-55 (MDS-D-SPJ3-55) is a dedicated spindle drive unit developed for Mitsubishi MDS-D-SPJ3 series drive systems. Operating as a core drive component within machine tool CNC architectures, this unit delivers precise speed and torque regulation for industrial spindle motors. It features a rated output capacity of 5.5 kW (5,500 W) and a rated operating current of 18 A, ensuring reliable motion control performance under demanding machining conditions. The unit operates from a three-phase AC input supply rated at 200 V to 230 V AC (200 V class, 220 V or 230 V AC) and is rated for ambient operating temperatures ranging from 0 °C to +55 °C. Engineered for industrial reliability, the drive provides efficient power conversion and accurate motor regulation across cutting, milling, and turning applications. Its robust design integrates directly into Mitsubishi CNC control cabinets alongside compatible servo drives. The MDS-D-SPJ3-55 is well-suited for machine tools and automated manufacturing equipment requiring consistent spindle drive performance.