HC-KFS73 belongs to Mitsubishi classic MELSERVO-J2S HC-KFS low inertia servo series. Rated output power 750W, rated speed 3000rpm, maximum speed 4500rpm. Rated torque 2.4 N·m, peak torque 7.2 N·m. It adopts 80×80mm flange mounting structure, straight shaft design without electromagnetic brake. Integrated 17-bit absolute encoder (131072 p/rev) provides high-precision position feedback, supporting absolute position reading without zero return after power cycle. It matches with MR-J2S series servo amplifiers.

This low inertia rotor design delivers fast acceleration and deceleration response, ideal for high-frequency positioning motion. The motor housing protection grade IP55, insulation class B. Operating ambient temperature 0~40℃, humidity ≤80% non-condensing. It supports stable operation for continuous and intermittent motion tasks. Power and encoder connectors are separated for convenient wiring and maintenance.

Built-in thermal protection detects motor overtemperature, sending alarm signal to servo amplifier to cut output and prevent burnout. It supports digital auto-tuning with matched MR-J2S drive to optimize gain and suppress mechanical vibration.

HC-KFS73 is discontinued legacy Mitsubishi servo spare part. Many old automation machines still run MELSERVO-J2S servo systems. When the original motor fails, replacing it with identical HC-KFS73 can reuse existing MR-J2S amplifier, power cable, encoder cable and original servo parameters. Technicians complete mechanical coupling, wiring, encoder check and JOG test, so the machine positioning axis resumes operation and reduces downtime.

Before shipment, every HC-KFS73 undergoes comprehensive functional inspection including winding resistance test, insulation resistance test, encoder feedback verification, bearing noise inspection and rotation test. All products come with 12-month warranty. Our automation technical team provides remote support for installation, wiring guidance, servo parameter tuning and fault diagnosis. Fast global shipping available for urgent maintenance orders.

For automation maintenance engineers and system integrators, HC-KFS73 is reliable spare low inertia servo motor for legacy Mitsubishi MELSERVO-J2S motion systems. It restores high-precision axis positioning and fast dynamic performance, extends service life of automation assets and avoids high-cost whole servo system renovation.