HG-KR43BJ | Mitsubishi HG Series Servo Motor – 0.4kW 3000 RPM Encoder

HG-KR43BJ – Mitsubishi HG Series Brushless Servo Motor

Precision motion control solution. Rated 0.4 kW output and 3,000 RPM speed. Built for small-capacity, high-response automation. Includes 22-bit absolute feedback encoder and IP65 protection. Ideal for demanding industrial environments.

Product Description

• High-precision brushless servo motor – Mitsubishi HG Series. Smooth torque, accurate positioning.
• Rated speed: 3,000 RPM – Supports rapid cycles. Output: 0.4 kW – Perfect for small power axes.
• 22-bit absolute feedback encoder – Resolution: 4,194,304 pulses/rev. No home search needed.
• Built-in electromagnetic brake – Holds load safely when power off.
• IP65 protection – Dust-tight and water resistant. Works reliably in harsh conditions.
• Low inertia design – Quick acceleration and deceleration. Reduces settling time.
• Natural cooling method – Stable temperature without fans. Oil seal included – blocks contaminants.

Technical Specifications

• ▪ Brand & Model
  • • Manufacturer: Mitsubishi Electric
  • • Product Line: HG Series
  • • Part Number: HG-KR43BJ
• ▪ Power & Voltage
  • • Output rating: 0.4 kilowatts (400W)
  • • Rated speed: 3,000 RPM
  • • Supply voltage class: 200 V AC class (200-240V AC)
  • • Cooling method: Natural cooling
• ▪ Encoder & Resolution
  • • Encoder type: 22-bit absolute feedback encoder
  • • Resolution: 4,194,304 pulses per revolution
  • • Position feedback: Absolute (no battery backup needed)
• ▪ Mechanical Limits & Inertia
  • • Max axial load: 98 Newtons
  • • Max radial load: 245 Newtons
  • • Inertia type: Low inertia (responsive performance)
  • • Weight: 0.79 kg (1.75 lbs)
• ▪ Frequency Response & Dynamics
  • • Velocity frequency response: Up to 2.0 kHz
  • • Torque linearity: ±1% within rated range (smooth motion)
  • • Suitable for high-speed positioning and fast settling
• ▪ Environmental Tolerance
  • • Degree of protection: IP65 (dust-tight, water jet resistant)
  • • Oil seal: Included – protects against oil ingress
  • • Operating temperature: 0°C to +40°C
  • • Storage temperature: -15°C to +70°C
  • • Humidity: 5% to 90% RH (non-condensing)
• ▪ Noise Immunity & EMC
  • • Complies with EN 55011 Class A, EN 61800-3
  • • Shielded cable recommended for high-noise environments
• ▪ Connector & Brake
  • • Connector: 4-pin rectangular connector (easy wiring)
  • • Brake type: Built-in electromagnetic brake (24 V DC)

Installation Guide

• Mounting orientation: Any direction. Ensure ventilation space.
• Shaft load check: Do not exceed axial 98 N / radial 245 N.
• Cable connection: Use the 4-pin rectangular connector. Tighten securely.
• Brake wiring: Apply 24 V DC to release brake. Engages when power off.
• Grounding: Connect motor frame to PE terminal for safety.
• Avoid hammering shaft; use proper mounting tools.

Debugging & Maintenance Convenience

• Auto-tuning: Supported by MR-J4, MR-JE series drives. Reduces setup time.
• Absolute encoder backup: No battery needed. Less downtime.
• Easy connector access: 4-pin plug simplifies replacement.
• Diagnostic LEDs – status via drive controller.
• IP65 & oil seal: Resists washdown. Minimal cleaning needed.

Compatibility

• Compatible drives: Mitsubishi MR-J4-20A, MR-JE-20A, MR-J5 series (200V class).
• Supports SSCNET III/H, CC-Link IE Field Basic via compatible controllers.
• Works with PLCs: MELSEC iQ-R, Q series, L series.
• Absolute encoder interface fully compatible with Mitsubishi servo amplifiers.

Certifications

• CE Marking (EMC Directive, Low Voltage Directive)
• UL Recognized (File No. E171462) – Suitable for North America.
• RoHS Compliant – Restriction of hazardous substances.
• REACH – SVHC compliance available upon request.

Package Contents

• 1 x Mitsubishi HG-KR43BJ servo motor (with electromagnetic brake)
• 1 x 4-pin rectangular connector (pre-installed on motor)
• 1 x motor shaft key (if applicable)
• Quick start guide & safety instructions (digital download)
• Oil seal pre-installed from factory.

Warranty & Shipping

• 12-month warranty against manufacturing defects.
• 12-24 hour dispatch for in-stock items (business days).
• Express courier options: FedEx, UPS, DHL – tracking provided.
• Global shipping with insurance available.

Expert Review

Industrial motion specialist: The HG-KR43BJ delivers exceptional precision for 400W class. 22-bit encoder ensures micro-positioning at low speeds. IP65 and oil seal extend motor life in machine tools. Low inertia pairs perfectly with high-gain drives. Reliable, compact, powerful.

Manager’s Insight

For operations seeking reduced downtime and maintenance, the HG-KR43BJ stands out. Built-in brake adds safety without external parts. Absolute feedback eliminates homing, saving 2-3 seconds per cycle. Boosts throughput on repetitive axes. Proven in packaging and electronics assembly.

Applications & Suitable Devices

• Typical machines: PCB drilling, pick-and-place units, small CNC routers, automated assembly tables.
• Suitable devices: Robotics joints, conveyors, indexing tables, label applicators, medical analyzers.
• Industry sectors: Semiconductor, electronics manufacturing, packaging automation, lab automation.

Frequently Asked Questions (FAQ)

• • Q1: What servo drive matches this motor best?
    A: Use MR-J4-20A or MR-JE-20A. For advanced control, MR-J5-20A works with full encoder features.
  • Q2: Does the absolute encoder need a backup battery?
    A: No. The 22-bit absolute encoder uses multi-turn memory without battery. Saves maintenance cost.
  • Q3: Can I replace a 0.2 kW motor with this 0.4 kW on same axis?
    A: Check drive rating and inertia ratio. 0.4 kW gives higher torque but may require drive upgrade. Usually same frame size fits if inertia matched.
  • Q4: How to prevent oil ingress into motor?
    A: IP65 rating plus factory oil seal already protects. Ensure cable gland is tight and use proper mating connectors.
  • Q5: What is the electromagnetic brake holding torque?
    A: Approx 1.27 N·m (static friction). Suitable for vertical axis holding when power removed.

• Q6: From field experience, how long does this motor last in dusty environments?
  A: With IP65 and oil seal, typical lifespan exceeds 20,000 operating hours under moderate dust. Regular outer casing cleaning extends life.
• Q7: What is the maximum encoder cable length?
  A: Use up to 20 meters shielded cable for encoder signal. Beyond that, use a repeater.
• Q8: Does low inertia cause instability with high-friction loads?
  A: Low inertia gives faster response, but proper servo gain tuning solves instability. Use auto-tuning feature.
• Buying Guidance:
  Choose HG-KR43BJ when you need small capacity, low inertia, and absolute feedback. If application requires high torque at low speed, consider gear reducer. For washdown environments, IP65 is essential. Always confirm brake voltage (24 V DC). Compare radial load – this model supports 245 N; larger loads need bigger frame. Ideal for axes under 400W with frequent positioning.

Get in Touch

For volume pricing or technical support, contact us:

• ✉️ Email: sales@powergearx.com
• 📞 WhatsApp: +86 18030005825 (click to chat)

For complementary sensing solutions, check 3300 5mm Proximity Probes for vibration monitoring.

Copyright © 2026 Powergear X Automation Limited. All rights reserved.

Original Source: https://www.powergearx.com/