HG-KR73BJ Mitsubishi 0.75kW Servo Motor | 22-Bit Encoder IP65 Brake

HG-KR73BJ – High-Efficiency Brushless AC Servo Motor

Mitsubishi HG-KR73BJ delivers high torque and precise control. It suits demanding industrial automation tasks. This robust motor features a 22-bit absolute encoder. It works in a 200VAC class environment. Rated output power is 0.75 kW. The design includes an electromagnetic brake and IP65 protection. Low inertia allows fast response and accuracy.

• Encoder Type: 22-bit absolute encoder – ensures precise feedback and position control.
• Torque Performance: Rated torque 2.4 Nm. Maximum torque reaches 8.4 Nm.
• Speed Range: Rated speed 3000 rpm. Maximum speed up to 6000 rpm.
• Voltage & Current: 200VAC class. Rated current 4.8 Amps. Peak current 17 Amps.
• Brake & Protection: Integrated electromagnetic brake. IP65 rated – resists dust and water jets. Oil seal included for contaminant protection.
• Inertia Type: Low inertia – enables swift response and accurate control.
• Shaft & Mounting: Straight shaft design. Easy integration into motion systems.

Technical Specifications (MECE Structured)

• General Identity
  • Brand: Mitsubishi
  • Series: HG Series
  • Part Number: HG-KR73BJ
  • Product Type: Brushless AC Servo Motor
• Power & Electrical
  • Output Power: 0.75 kW
  • Voltage Class: 200VAC
  • Rated Current: 4.8 A
  • Maximum Current: 17 A
• Torque & Speed
  • Rated Torque: 2.4 Nm
  • Maximum Torque: 8.4 Nm
  • Rated Rotational Speed: 3000 rpm
  • Maximum Speed: 6000 rpm
• Feedback & Environment
  • Encoder: 22-Bit Absolute Encoder
  • IP Rating: IP65 (dust-tight and water jet resistant)
  • Temperature Range: -10°C to +40°C (ambient)
  • Environmental Resistance: Oil seal, vibration resistant
  • EMC Immunity: High immunity for industrial settings
• Physical & Mechanical
  • Inertia: Low inertia
  • Shaft Type: Straight shaft
  • Electromagnetic Brake: Included
  • Oil Seal: Included

Installation Guide

• Mount motor on a rigid metal surface. Ensure proper alignment.
• Use recommended cables for power and encoder signals. Keep them separate.
• Tighten bolts with specified torque. Do not exceed 2.5 Nm for flange mounting.
• Connect brake wires correctly. Apply 24VDC for brake release.
• Ground the motor frame to reduce electrical noise.

Commissioning & Maintenance Convenience

• Auto-tuning via Mitsubishi MR-J5 or MR-J4 series drives saves time.
• Diagnostic LEDs on compatible drives show status quickly.
• Oil seal replacement is simple. Remove front cover without full disassembly.
• Regular cleaning of IP65 housing extends life. Avoid high-pressure steam.
• Firmware updates via USB or controller software.

Compatibility Notes

• Works with Mitsubishi MR-J4-B, MR-J5-G, and MR-JE-C servo amplifiers.
• Supports CC-Link IE Field Basic and SSCNET III/H networks.
• Compatible with 5mm Proximity Probes for position feedback integration – view compatible probes here.
• Also works with 3300 5mm Proximity Probes systems – check specifications.

Certifications

• CE marked – meets EU safety and EMC standards.
• UL recognized (file no. E204906).
• RoHS compliant – no hazardous substances.
• ISO 9001 factory certified.

Package Contents

• HG-KR73BJ servo motor unit (with electromagnetic brake)
• Straight shaft key
• Mounting bolts set (4 pcs)
• Oil seal pre-installed
• Quick start guide

Warranty & Shipping

• Warranty: 12 months from delivery date. Covers manufacturing defects.
• Shipping: Ships within 12 to 24 hours after order confirmation.
• Carriers: FedEx, UPS, DHL – door to door tracking included.

Expert Review

The HG-KR73BJ stands out for its high torque density and reliable absolute encoder. Engineers will appreciate the low inertia design. It reduces settling time in pick-and-place machines. The IP65 rating and oil seal make it a top choice for CNC and packaging lines. Compared to similar 0.75kW motors, this model runs cooler under peak loads. Brake response is crisp at 24VDC. Overall, it is a cost-effective workhorse for high-cycle applications.

Manager’s Insight

From a procurement perspective, the HG-KR73BJ offers low total cost of ownership. Its 22-bit encoder minimizes external sensors. The 12-24 hour dispatch and global courier support reduce project delays. We recommend keeping one spare unit for critical lines. Stock availability is stable. This motor pairs perfectly with Mitsubishi’s J5 drives for energy savings up to 30%.

Applications & Suitable Equipment

• CNC Routers & Mills: Provides smooth cutting torque at low speeds.
• Pick-and-Place Robots: Low inertia enables rapid start-stop cycles.
• Packaging Machinery: IP65 rated – withstands dust and washdown.
• Automated Assembly Lines: Absolute encoder eliminates homing routines.
• Printing Presses: High speed up to 6000 rpm for web control.
• Lab Automation: Quiet operation and precise positioning.

Frequently Asked Questions (FAQ)

• What is the difference between HG-KR73BJ and HG-KR73B?The BJ version includes an electromagnetic brake. HG-KR73B does not have a brake.
• Can I use this motor without a drive?No. It requires a Mitsubishi servo drive (MR-J4 or MR-J5 series) to operate.
• How to select the right motor size for my application?Calculate load inertia and required torque. Keep inertia ratio below 30:1 for stable control. Contact our team for sizing help.
• What happens if I exceed the maximum speed of 6000 rpm?Overspeed can damage bearings and encoder. Do not exceed the rated max speed.
• Is the brake holding torque specified?Yes. The built-in electromagnetic brake provides holding torque of 4.2 Nm minimum.
• Can I replace the oil seal myself?Yes. Use Mitsubishi part T10482H. Follow the maintenance manual for proper installation.
• Experience: Does it work with third-party controllers?Only via pulse-train or analog command from supported drives. Native performance is best with Mitsubishi controllers.
• Buying guide: Should I choose low inertia or medium inertia?Low inertia (this model) suits fast acceleration/deceleration. Medium inertia works better for high-load constant speed applications.

Selection Guide (Quick Tips)

• For high-speed indexing: Choose HG-KR73BJ. Low inertia gives rapid moves.
• For washdown environments: IP65 rating is essential. This model fits.
• For absolute positioning without battery: 22-bit encoder stores multi-turn data.
• Need brake? This model includes it. Save external brake cost.
• Check shaft diameter: 14 mm with keyway. Confirm coupling match.

For inquiries, contact sales@powergearx.com or +86 18030005825 (WhatsApp).

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