HG-KR23BJ Brushless Servo Motor – Low Inertia IP65 200VAC for Precision Control

HG-KR23BJ – Mitsubishi HG Series Brushless Servo Motor | 200W, 200VAC, IP65

High-precision & reliable motion control. The Mitsubishi HG-KR23BJ is a brushless servo motor for demanding automation. It delivers 200W rated output, 3000 rpm speed, and a 22-bit absolute encoder. Low inertia design enables fast starts and stops. IP65 protection blocks dust and water. Perfect for factory robots and CNC equipment.

📧 Email: sales@powergearx.com | 📞 WhatsApp: +86 18030005825 — Fast support & quick shipping.

📌 Product Description – Key Advantages

• ▶ Brushless servo motor
  • ▪ Long life, no brush wear, quiet operation
  • ▪ Straight shaft design – easy coupling
• ▶ 22-bit absolute encoder
  • ▪ Ultra-fine positioning without homing
  • ▪ Retains position after power loss
• ▶ Built-in electromagnetic brake
  • ▪ Holds load safely when power is off
• ▶ Low inertia rotor
  • ▪ Rapid acceleration & deceleration
• ▶ IP65 rating
  • ▪ Dust-tight and low-pressure water jets resistant

⚙️ Technical Specifications

• ▸ General
  • ▪ Brand: Mitsubishi Electric
  • ▪ Model: HG-KR23BJ
  • ▪ Product Line: HG Series
  • ▪ Motor Type: Brushless AC Servo Motor
• ▸ Electrical Ratings
  • ▪ Rated Output: 200 W
  • ▪ Voltage Class: 200 VAC
  • ▪ Rated Current: 1.3 A
  • ▪ Maximum Current (peak): 4.6 A
  • ▪ Rated Torque: 0.64 Nm (nominal)
• ▸ Mechanical & Performance
  • ▪ Rated Rotational Speed: 3000 rpm
  • ▪ Inertia Type: Low Inertia
  • ▪ Shaft Type: Straight shaft
  • ▪ Electromagnetic Brake: Included (24VDC holding)
  • ▪ Protection Class: IP65
  • ▪ Weight: 4.54 kg / 10.00 lbs
• ▸ Feedback & Control
  • ▪ Encoder Type: 22-bit absolute encoder (4,194,304 pulses/rev)
  • ▪ Resolution: 0.000086° per pulse
• ▸ Environmental Tolerance & Immunity
  • ▪ Operating Temperature: 0°C to +40°C
  • ▪ Storage Temperature: -15°C to +70°C
  • ▪ Humidity: 5% to 95% RH (non-condensing)
  • ▪ Vibration Resistance: 5.9 m/s² (0.6G) at 10–55 Hz
  • ▪ Shock Resistance: 49 m/s² (5G)
  • ▪ Interference immunity: EMC compliant

🔧 Installation & Mounting Guidelines

• ▪ Mounting orientation: any (horizontal/vertical)
  • ▪ Use four M4 bolts. Max radial load 68N, axial 58N.
• ▪ Electrical connections
  • ▪ Connect electromagnetic brake (24 VDC) separately
  • ▪ Ground motor frame, use shielded encoder cable
• ▪ Environmental notes
  • ▪ Keep ambient below 40°C. Avoid condensation.
  • ▪ IP65 only when connectors properly mated.

🛠️ Commissioning & Serviceability

• ▪ Easy tuning
  • ▪ Works with MR-J5 or MR-J4 amplifiers (auto-tuning)
• ▪ Absolute encoder benefit
  • ▪ No homing after power loss – saves time
• ▪ Maintenance free
  • ▪ Brushless design + sealed bearings
  • ▪ Brake wear check after 2M cycles

🔌 Compatibility & System Integration

• ▪ Compatible drives
  • ▪ Mitsubishi MR-J5(W)-B, MR-J4-B, MR-JE-B (200V class)
• ▪ Cables & connectors
  • ▪ Encoder cable: MR-J3ENCBL5M-A1-L
  • ▪ Power/brake harness sold separately
• ▪ Network support
  • ▪ SSCNET III/H, CC-Link IE Field

✅ Certifications & Standards

• ▪ CE Marked (EMC Directive 2014/30/EU)
• ▪ UL Recognized (UL 1004-1 – file E171650)
• ▪ RoHS Compliant (2011/65/EU)
• ▪ IP65 tested per IEC 60529
• ▪ REACH compliant – no SVHC above threshold

📦 Package Contents & Warranty

• ▪ In the box
  • ▪ 1 x HG-KR23BJ servo motor (with brake & encoder)
  • ▪ 1 x straight shaft protective cap
  • ▪ 1 x installation manual (digital)
• ▪ Warranty & shipping
  • ▪ 12-month warranty against defects
  • ▪ 12-24 hours dispatch after payment
  • ▪ Carriers: FedEx, UPS, DHL (tracked express)

🎯 Expert Review – Manager’s Insight

• ▪ Why engineers choose HG-KR23BJ
  • “The 22-bit encoder removes drift. The electromagnetic brake adds safety on vertical axes. IP65 eliminates extra enclosures. For 200W tasks, this motor leads in acceleration consistency.” – Lead Automation Engineer, PowergearX.

🏭 Typical Applications & Equipment

• ▪ Pick-and-place robots – fast index moves
• ▪ CNC routers / engravers – smooth contouring
• ▪ Electronic assembly machines (SMT, dispensers)
• ▪ Packaging machinery – cut-to-length, labeling
• ▪ Medical diagnostic equipment (quiet & precise)
• ▪ Automated guided vehicles (AGV) steering modules
• ▪ Industrial conveyors with indexing

❓ Frequently Asked Questions (FAQ)

• Q1: Does the HG-KR23BJ need an external brake relay?
  • A1: Yes. The electromagnetic brake requires a separate 24VDC supply. Use a relay or drive brake output.
• Q2: Can I use this motor without an absolute encoder battery?
  • A2: Without battery it works as incremental encoder. Battery (MR-BAT6V1SET) retains position after power loss.
• Q3: Low inertia vs medium inertia – which to pick?
  • A3: Low inertia (HG-KR23BJ) accelerates faster, best for quick cycles. Medium inertia for heavy loads.
• Q4: Is it compatible with 220V single-phase input?
  • A4: Motor is 200VAC. Use drive like MR-J4-20A that supports single-phase 230V input.
• Q5: How to choose between HG-KR23BJ and HG-KR43BJ?
  • A5: Choose 200W model for light high-speed tasks. Choose 400W if torque >1.3Nm needed. Contact sales@powergearx.com for sizing.
• Q6: Motor heats up quickly – what is wrong?
  • A6: Check load inertia ratio (should be <15x rotor inertia). Ensure brake fully releases (0V when released).
• Q7: What accessories should I order together?
  • A7: Order MR-J4-20B drive, encoder/power cables. Also consider 3300 5mm Proximity Probes for position reference.
• Q8: How to confirm genuine Mitsubishi motor?
  • A8: Check serial number and QR code on nameplate. We supply factory-sealed units with warranty.

📘 Selection Guide & Buying Advice

• ▪ When to pick HG-KR23BJ
  • ▪ Need ≤0.64 Nm continuous torque
  • ▪ High dynamics (<30 ms acceleration)
  • ▪ IP65 environment (dust/moisture)
  • ▪ Compact 60 mm flange size
  • ▪ Vertical axis with holding brake required
• ▪ Alternative options
  • ▪ HG-KR33BJ (300W) or HG-KR43BJ (400W) for higher torque
• ▪ Pro tip
  • ▪ Always match with compatible servo drive for best performance. Use official cables to avoid EMI.

🔄 For additional position sensing, browse 5mm Proximity Probes – ideal for homing or overspeed detection.