MITSUBISHI HG-KR43 AC Brushless Rotary Servo Motor with Straight Shaft

Mitsubishi Electric HG-KR43 is a low‑inertia, small‑capacity AC servo motor from the MELSERVO‑J4 series. Rated output 400 W (0.4 kW) at 200 V AC class. Equipped with a 22‑bit absolute encoder (4,194,304 pulses/revolution) for precise position detection. Designed for high‑speed positioning in industrial automation requiring compact size and high dynamic response.

Applications:

• Pick‑and‑place machinery and compact robotics

• Semiconductor processing and precision positioning equipment

• Packaging machinery and assembly lines

• CNC axis drives and belt‑driven systems

Core Specifications:

• Rated output power: 400 W (0.4 kW)

• Rated current: 2.6 A

• Supply voltage: 200 V AC class (200‑240 V AC)

• Rated torque: 1.3 N·m

• Maximum torque: 4.5 N·m

• Rated rotational speed: 3,000 rpm

• Maximum rotational speed: 6,000 rpm

• Moment of inertia: 0.0000371 kg·m² (0.371 kg·cm²)

• Encoder type: 22‑bit absolute encoder (4,194,304 pulses/revolution)

• Protection rating: IP65 (excluding shaft and connector)

• Shaft type: Straight shaft (without key)

• Connection type: 4‑pin rectangular connector

• Mounting: 60 mm × 60 mm flange mounting

• Dimensions (W × H × D): 60 mm × 77.1 mm × 128.3 mm

• Weight: approx. 1.4 kg

• Ambient operating temperature: 0 °C … +40 °C

Advanced Specifications:

• Maximum radial load: 245 N

• Maximum axial load: 98 N

• Maximum current: 9.1 A

• Storage temperature: –15 °C … +70 °C

• Cooling method: Natural convection (fanless)

• Vibration class: V10 (10 µm or less)

• Standards: CE, cULus, TÜV Rheinland, KC, RoHS

System Integration:

• This servo motor belongs to the Mitsubishi Electric MELSERVO‑J4 series.

• Compatible servo amplifiers: MR‑J4‑40B (SSCNET III/H interface), MR‑J4‑40A (pulse train interface), and multi‑axis amplifiers (MR‑J4W2‑77B, MR‑J4W2‑1010B, MR‑J4W3‑444B).

• Suitable for use with Mitsubishi HG‑KR/HG‑MR series drives.

• The 22‑bit absolute encoder supports both absolute and incremental modes; in absolute mode, battery backup (MR‑BKS1CBL03M‑A) is required for position retention during power‑off.

Related Products:

• MR‑J4‑40B – 400 W servo amplifier with SSCNET III/H interface

• MR‑J4‑40A – 400 W servo amplifier with pulse train interface

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

• MR‑BKS1CBL03M‑A – Battery cable for absolute encoder