Mitsubishi HC-RFS503 AC Servo Motor for MELSERVO-J2S Series

The Mitsubishi HC-RFS503 (HC-RFS503) is an AC brushless rotary servo motor engineered for high-performance motion control within the MELSERVO-J2S drive family. Operating on a 200 VAC power supply class, this low-inertia motor delivers a rated output of 5 kW (5000 W) with a continuous rated torque of 15.9 Nm and a nominal rotation speed of 3000 rpm. It is rated for a continuous current of 28 A and provides exceptional positioning accuracy through an integrated 17-bit absolute feedback encoder providing 131072 pulses per revolution. Built for demanding factory environments, the HC-RFS503 features a straight shaft configuration with a built-in oil seal and an IP65 protection rating to guard against dust and fluid ingress. It mounts using a 130 mm by 130 mm flange and is rated for operation across ambient temperatures from 0 to +40 degrees Celsius. The motor is widely utilized in precision machinery, packaging systems, CNC equipment, and robotic manufacturing cells requiring fast dynamic response, precise feedback, and reliable high-torque continuous performance.