HG-KR43 MELSERVO-J4 400W AC Servo Motor 22-bit Encoder | Mitsubishi

The Original New Mitsubishi HG-KR43 MELSERVO-J4 Series AC Servo Motor is a low‑inertia, small‑capacity brushless rotary servo motor designed for high‑precision motion control in industrial automation systems. Rated at 400W (0.4kW) with 200V AC class input, this motor delivers 1.3 N·m rated torque and 4.5 N·m maximum torque at 3000 rpm rated speed (6000 rpm maximum). Equipped with a built‑in 22‑bit absolute encoder (4,194,304 pulses/revolution) for ultra‑precise position feedback, it enables accurate positioning without homing at power‑up. The straight shaft design and IP65 protection rating make it suitable for demanding applications in pick‑and‑place, packaging, semiconductor manufacturing, and CNC machining.

Core Engineering Highlights:
400W (0.4kW) rated output | 1.3 N·m rated torque / 4.5 N·m maximum torque | 3000 rpm rated speed / 6000 rpm maximum speed | 22‑bit absolute encoder (4,194,304 pulses/revolution) | 2.6 A rated current / 9.1 A maximum current | 200V AC class supply voltage | Low inertia: 0.371 kg·cm² | 60 × 60 mm flange mounting | IP65 protection (excluding shaft penetration) | 4‑pin rectangular connector | Natural cooling | 0°C to +40°C operating temperature | CE, cULus, TÜV Rheinland, KC certified

Key Features:

• Original New Mitsubishi HG-KR43 servo motor

• 400W (0.4kW) rated output power for small to medium automation applications

• 22‑bit absolute encoder (4,194,304 pulses/revolution) for high‑precision position feedback

• 1.3 N·m rated torque with 4.5 N·m peak torque for demanding acceleration

• 3000 rpm rated speed, 6000 rpm maximum speed for high‑speed positioning

• Low inertia design (0.371 kg·cm²) for rapid acceleration and deceleration

• Straight shaft with 4‑pin rectangular connector for simple installation

• 60 × 60 mm flange mounting for space‑efficient machine integration

• IP65 protection rating for dust‑tight and water‑resistant operation

• Natural convection cooling – no external fan required

• Broad compatibility with MELSERVO‑J4 series servo amplifiers

• Absolute/incremental encoder operation (battery‑backed absolute position retention with MR‑BAT6V1SET)

• TÜV Rheinland, CE, cULus, KC, EAC certified

Applications:

• High‑speed pick‑and‑place and assembly automation

• Semiconductor manufacturing and electronics assembly

• Packaging machinery and labeling equipment

• CNC machine tools and precision positioning tables

• Robotics and automated guided vehicles (AGVs)

• Material handling and conveyor systems

• General factory automation and OEM machinery

• Legacy J2S/J3 system upgrades (with compatible amplifiers)

Technical Specifications:

System Compatibility:

• Compatible with Mitsubishi MELSERVO‑J4 series servo amplifiers: MR‑J4‑40A, MR‑J4‑40A‑RJ, MR‑J4‑40B, MR‑J4‑40B‑RJ, MR‑J4‑40GF, MR‑J4‑40GF‑RJ, MR‑J4‑40A1, MR‑J4‑40A1‑RJ, MR‑J4‑40B1, MR‑J4‑40B1‑RJ

• Compatible with multi‑axis amplifiers: MR‑J4W2‑77B, MR‑J4W2‑1010B, MR‑J4W3‑444B

• Supports 22‑bit absolute encoder feedback with MR‑BAT6V1SET battery for absolute position retention

• J3 compatibility mode available when used with compatible amplifiers

• Suitable for use with HG‑KR series motors and MELSERVO‑J4 drive systems

Required Accessories (order separately):

• MR‑J3ENCBL2M‑A1 – Encoder cable, 2m (standard bending life)

• MR‑PWS1CBL2M‑A1 – Power cable, 2m

• MR‑BAT6V1SET – Battery for absolute encoder (for absolute position retention)

PLC ERA is an independent industrial automation distributor supplying genuine Original New products through established global supply channels. All products are factory sealed when applicable and undergo quality inspection prior to shipment. Mitsubishi, MELSERVO, and HG‑KR are trademarks of Mitsubishi Electric Corporation.