Mitsubishi HG‑SR52G7 Synchronous Servo Motor Product Description

Overview

Mitsubishi HG‑SR52G7 is a medium‑inertia synchronous servo motor of the Mitsubishi MELSERVO‑J4 HG‑SR series, integrated with a built‑in planetary gearhead. This Mitsubishi synchronous servo motor is rated at 0.5 kW and designed to pair with MR‑J4 servo drives for high‑precision speed, torque and positioning control. The suffix G7 denotes the integrated gear reduction unit, delivering higher output torque at low speed for compact mechanical layouts. As a mature Mitsubishi motion component, HG‑SR52G7 is widely used for OEM machine development, production line retrofitting and spare‑part replacement of existing J4 motion systems.

Features

Mitsubishi HG‑SR52G7 synchronous servo motor adopts medium‑inertia rotor design for stable operation under fluctuating load conditions. This Mitsubishi synchronous servo motor is equipped with a standard 22‑bit absolute/incremental dual‑purpose encoder with 4194304 pulses per revolution for outstanding positioning resolution. HG‑SR52G7 integrates a precision planetary gear reducer to amplify output torque without adding an external gearbox, saving installation space. The Mitsubishi synchronous servo motor is fully enclosed and self‑cooled with IP67 protection grade, suitable for workshop environments with dust and splash risks. This Mitsubishi synchronous servo motor supports high dynamic response and cyclic acceleration‑deceleration motion, and it can work with SSCNETⅢ/H or pulse‑command type MR‑J4 amplifiers. HG‑SR52G7 has no built‑in holding brake; vertical axis applications require separate brake configuration.

Specs

Mitsubishi HG‑SR52G7 synchronous servo motor

• Brand: Mitsubishi Electric

• Series: MELSERVO‑J4 HG‑SR

• Model: HG‑SR52G7

• Rated power: 0.5 kW

• Rated torque (motor): 2.4 Nm

• Max torque (motor): 7.2 Nm

• Rated speed: 2000 rpm

• Max speed: 3000 rpm

• Encoder: 22‑bit absolute / incremental encoder

• Protection: IP67

• Cooling: Self‑cooled

• Gear configuration: Built‑in planetary gearhead (G7)

• Matching drive: MR‑J4‑60A / MR‑J4‑60B

• Mounting: Flange mounting

Principle

Mitsubishi HG‑SR52G7 synchronous servo motor receives power and motion commands from the matched MR‑J4 servo amplifier. The permanent magnet synchronous motor generates rotary motion, and the built‑in planetary gear set reduces output speed and increases output torque. The 22‑bit encoder continuously feeds rotor position back to the drive to form a closed position loop, enabling accurate point‑to‑point positioning, speed control and torque limiting. The gear mechanism distributes load evenly to reduce backlash and improve the stability of low‑speed heavy‑load operation. The servo amplifier executes gain tuning, alarm monitoring and motion sequence control according to the feedback signal.

Applications

Mitsubishi HG‑SR52G7 synchronous servo motor is widely deployed in packaging machines, material handling conveyors, automatic assembly jigs and small‑scale processing equipment. This Mitsubishi synchronous servo motor is preferred for compact automation stations that require high torque output but limited installation space. HG‑SR52G7 fits equipment renovation and spare replacement of legacy MELSERVO‑J4 gear‑type servo motors. It performs indexing, clamping, feeding and other cyclic positioning tasks when controlled by PLC motion commands.

Installation & Maintenance Notes

Follow official Mitsubishi hardware manuals during installation of Mitsubishi HG‑SR52G7 synchronous servo motor. Align the output flange and load coupling properly to avoid side load on the gear and motor shaft. Use compatible Mitsubishi power and encoder cables and check shielding continuity for EMC performance. Set servo gain, speed limits and soft limits on the MR‑J4 drive according to actual load and gear ratio. Periodically inspect gear lubrication, connector tightness and shaft running smoothness under high‑cycle operation. Confirm exact part number HG‑SR52G7 before spare‑part swap‑out to verify gear type, encoder type and drive compatibility with the existing motion control system.