Mitsubishi MR-J3HC5SB-15M Direct Drive Rotary Servomotor for MELSERVO Series

The Mitsubishi MR-J3HC5SB-15M (MR-J3HC5SB-15M) is a high-rigidity direct drive rotary servomotor designed for Mitsubishi MELSERVO series motion control systems. Equivalent to the TM-RFM120J10, this motor features a hollow flanged shaft design, an integrated thermistor for continuous thermal protection, and a built-in 20-bit absolute feedback encoder that ensures precise angular positioning without requiring external homing sequences. Operating at a rated current of 11 A, the unit delivers a rated power output of 1,257 W (1.257 kW) with a rated torque of 120 Nm at a rated rotation speed of 100 rpm. The direct drive design couples directly to the driven load, eliminating backlash and mechanical compliance associated with gearboxes or timing belts. It features standard 330 mm by 330 mm flange mounting dimensions for secure, rigid mechanical installation. The servomotor is built for high-performance industrial automation machinery, including rotary index tables, material positioning systems, semiconductor handling tools, and precision winding equipment requiring smooth low-speed velocity regulation and high torque output.