Mitsubishi HG-KR43BK AC Servo Motor — 400W | Genuine New In Box

The Mitsubishi HG-KR43BK is a 400W AC servo motor from Mitsubishi's high-performance HG-KR series, built for demanding precision motion control applications. Featuring a 20-bit absolute encoder, rated speed of 3000 RPM, and peak torque of 3.82 N·m, it delivers the accuracy and dynamic response that CNC machines, robotics, and automated production lines depend on.

✅ Genuine Mitsubishi product. Factory sealed. Ready for immediate worldwide shipment.

At a Glance — Why Engineers Choose the HG-KR43BK

Strength	What It Means for You
20-bit absolute encoder	Sub-micron positioning accuracy, no homing required after power cycle
5000 RPM peak speed	Rapid acceleration/deceleration with minimal overshoot
400W / 1.27 N·m rated	Right-sized power for compact CNC axes and robotic joints
MR-J4 / MR-JE compatible	Seamless integration into existing Mitsubishi servo drive systems
Compact flange mount	Easy retrofit into tight machine enclosures

Full Technical Specifications

Parameter	Specification
Manufacturer	Mitsubishi Electric
Model	HG-KR43BK
Motor Type	AC Servo Motor
Rated Power	400 W
Rated Torque	1.27 N·m
Peak Torque	3.82 N·m
Rated Speed	3000 RPM
Max Speed	5000 RPM
Rated Current	1.3 A
Supply Voltage	200V AC, 3-phase
Encoder	20-bit Absolute
Rotor Inertia	0.00033 kg·m²
Mounting	Flange mount
Operating Temp	0°C ~ 55°C
Condition	New / Factory Sealed
Compatible Drives	MR-J4, MR-JE, MR-JE-B series

Compatible Mitsubishi Servo Drive Pairing

For the HG-KR43BK to perform at its best, pair it with a compatible Mitsubishi MR-J series servo amplifier:

MR-J4-10A / MR-J4-10B — Standard position/speed/torque control
MR-JE-10A — Cost-effective option for general automation
MR-JE-10C — CC-Link IE Field Network variant

💡 Always verify the amplifier capacity (W rating) matches or exceeds the motor's rated power to avoid drive faults.

HG-KR Series Model Comparison

Choosing between Mitsubishi HG-KR models? Here's a quick reference:

Model	Rated Power	Rated Torque	Rated Speed	Best For
HG-KR13BK	100W	0.32 N·m	3000 RPM	Small axes, light loads
HG-KR23BK	200W	0.64 N·m	3000 RPM	Compact servo applications
HG-KR43BK	400W	1.27 N·m	3000 RPM	⭐ Mid-range CNC axes, robotics
HG-KR73BK	750W	2.39 N·m	3000 RPM	Heavier load applications
HG-KR103BK	1000W	3.18 N·m	3000 RPM	High-torque industrial axes

Typical Applications

The HG-KR43BK excels wherever precision, compactness, and reliability matter:

CNC machine tools — milling, turning, grinding axes
Industrial robotics — joint actuation in 6-axis arms and SCARA robots
Automated assembly lines — pick-and-place, conveyor positioning
Semiconductor & electronics manufacturing — ultra-precise stage control
OEM machine builders — custom automation equipment integration

Shipping & Quality Assurance

🔒 100% genuine Mitsubishi Electric product — factory sealed
🔍 Pre-shipment inspection on every unit
📦 Anti-static, vibration-protected industrial packaging
🌍 Worldwide express shipping available
⚡ In-stock units dispatched within 1–2 business days

FAQ — Mitsubishi HG-KR43BK Servo Motor

Q1: Is the HG-KR43BK a genuine Mitsubishi product? Yes. Every unit we supply is a 100% original Mitsubishi Electric HG-KR43BK — factory sealed and inspected before dispatch. We do not sell aftermarket or remanufactured units.

Q2: What servo drives are compatible with the HG-KR43BK? The HG-KR43BK is compatible with Mitsubishi MR-J4 and MR-JE series servo amplifiers. Common pairings include the MR-J4-10A, MR-JE-10A, and MR-JE-10C. Always match the amplifier's rated capacity to the motor's 400W output.

Q3: What does the "BK" suffix mean in HG-KR43BK? The "BK" suffix indicates the motor is equipped with a built-in electromagnetic brake. This holds the load in position when the motor is de-energized — essential for vertical axis applications or safety-critical installations.

Q4: Does the HG-KR43BK require homing after a power cycle? No. The 20-bit absolute encoder retains position data even after power loss (when backed by a battery in the servo drive). This eliminates the need for a homing routine after every startup, saving cycle time on your machine.

Q5: Can I use this motor as a direct replacement for a failed HG-KR43BK? Yes — it is a direct, plug-in replacement for any existing HG-KR43BK installation. Ensure your servo drive firmware and parameter settings are configured for this specific motor model.

Q6: What is the difference between HG-KR43BK and HG-KR43K (without BK)? The standard HG-KR43K does not include a brake. The HG-KR43BK variant adds an integrated electromagnetic brake for load holding. If your original motor had a brake, always replace with the BK version.

Q7: How quickly can you ship, and is bulk pricing available? In-stock orders ship within 1–2 business days with worldwide express options available. For volume orders or ongoing procurement, please contact us via WhatsApp or the Enquiry button for competitive bulk pricing.

Need help confirming compatibility with your servo drive or machine model? Reach out to our technical team — we're happy to assist.

HG-KR43BK 1PC Mitsubishi Servo Motor HGKR43BK New In Box