Overview
The Mitsubishi HG-KR43JK is a brushless AC servo motor designed for high-speed, precision motion control in demanding industrial automation environments. Part of the MELSERVO J4 series, this compact low-inertia motor delivers 400W output at 3000 RPM with a rated torque of 1.3 N·m, making it well-suited for applications requiring rapid acceleration and deceleration. Its keyed shaft and oil-sealed bearing design ensure durability and reliable long-term performance in manufacturing systems, packaging equipment, and precision assembly lines.
Key Features
- Low-Inertia Design: Enables rapid acceleration and deceleration for fast cycle times.
- 22-Bit Absolute Encoder: Provides ultra-high-resolution feedback (4,194,304 pulses per revolution) for precise positioning control.
- Keyed Shaft with Oil Seal: Robust construction with dual-keyway mounting versatility and sealed bearing protection.
- IP65 Protection Rating: Resistant to dust and water jets, suitable for harsh shop-floor environments.
- Compact 60×60 mm Flange: Space-saving footprint for integrated system design.
- 200 VAC Supply Voltage: Standard industrial three-phase power compatibility.
Technical Specifications
- Rated Power Output: 400 W (0.4 kW)
- Rated Speed: 3000 r/min
- Rated Torque: 1.3 N·m (0.96 ft·lbf)
- Rated Current: 2.6 A
- Supply Voltage: 200 VAC (three-phase)
- Encoder Resolution: 22-bit absolute/incremental (4,194,304 ppr)
- Protection Class: IP65
- Shaft Type: Keyed shaft (dual-keyway)
- Bearing: Oil seal
- Cooling Method: Natural air cooling
- Operating Temperature: 0 to +40°C ambient
- Flange Mounting: 60×60 mm
- Connector: 4-pin rectangular
- Series: MELSERVO J4 (HG-KR)
Typical Applications
The Mitsubishi HG-KR43JK excels in fast-cycle manufacturing processes where low inertia and rapid response are critical. Common applications include:
- Precision XY/XYZ positioning tables for robotics and material handling.
- High-speed packaging machinery requiring synchronized multi-axis control.
- Assembly automation with tight repeatability tolerances.
- Textile and printing equipment with rapid cross-machine motion.
- Laboratory and medical device automation systems requiring small, low-power drive solutions.
- Spindle speed control for CNC machining centers up to 3000 RPM.
Compatibility & Replacements
Compatible With
- Mitsubishi MR-J4 series servo amplifiers (MR-J4-40GF, MR-J4-40B, MR-J4-40A, MR-J4-40A1, and variants)
- Mitsubishi MR-J4W multi-axis amplifiers (2-axis and 3-axis configurations)
- Mitsubishi EtherNet/IP and MELSOFT communication protocols
- Mitsubishi GX Developer and GX Works 2 programming software
- Standard industrial 200 VAC three-phase AC power supplies
Replaces / Drop-In Replacement For
- Mitsubishi HG-KR43J (straight-shaft variant)
- Yaskawa SGMG-09A2AB (functionally equivalent compact servo)
- Verify compatibility with your system integrator before ordering to ensure encoder cable and flange alignment match your existing amplifier connections.
Works With
- Mitsubishi MELSERVO J4 servo amplifiers via encoder cable (2m, 5m, 10m bending life options available)
- Mitsubishi RT series HMI terminals for motion visualization and diagnostics
- Industrial Ethernet (EtherNet/IP PROFINET) via compatible gateway modules
- Third-party motion control systems supporting standard analog or digital servo interfaces with 22-bit absolute feedback
