HG-MR73B Mitsubishi HG Series Rotary Servo Motor | 0.75kW Ultra-Low Inertia with Brake

HG-MR73B – Ultra-Low Inertia Rotary Servo Motor

Mitsubishi HG-MR73B is a compact rotary servo motor. It delivers precise motion control for small-scale tasks. Rated output is 0.75 kW. It works with 200VAC power. An electromagnetic brake helps hold position securely. IP65 rating protects against dust and water. Ultra-low inertia enables fast starts and stops.

• Encoder Type: Absolute encoder – provides accurate position feedback.
• Torque Performance: Rated torque 2.4 Nm. Maximum torque reaches 8.4 Nm.
• Speed Range: Rated speed 3000 r/min. Maximum speed up to 6000 r/min.
• Voltage & Current: 200VAC class. Rated current 5.8 Amps. Peak current 20 Amps.
• Brake & Protection: Built-in electromagnetic brake. IP65 rated – resists dust and water jets. No oil seal included.
• Inertia Type: Ultra-low inertia – ideal for rapid acceleration and deceleration.
• Shaft & Mounting: Straight shaft. Easy to integrate into machines.

Technical Specifications (Hierarchical Tree Structure)

• General Identity
  • Brand: Mitsubishi
  • Series: HG Series
  • Part Number: HG-MR73B
  • Product Type: Rotary Servo Motor
  • Capacity: Small Power Capacity
• Power & Electrical
  • Rated Output: 0.75 kW
  • Supply Voltage Class: 200VAC
  • Rated Current: 5.8 Amps
  • Maximum Current: 20 Amps
• Torque & Speed
  • Rated Speed: 3000 r/min
  • Maximum Speed: 6000 r/min
• Physical & Mechanical
  • Weight: 10.00 lbs (4.54 kg)
  • Inertia: Ultra-Low Inertia
  • Shaft Shape: Straight Shaft
  • Brake: Electromagnetic Brake (included)
  • Oil Seal: Not Included
  • IP Rating: IP65 (dust-tight, water jet resistant)

Installation & Setup Tips

• Mount on a flat, rigid metal base. Ensure proper alignment.
• Use shielded cables for power and signals. Keep them apart.
• Apply 24VDC to release the brake. Wire it correctly.
• Ground the motor frame. This reduces electrical noise.
• No oil seal means avoid oily or greasy environments.

Maintenance & Ease of Use

• Auto-tuning with MR-J5 or MR-J4 drives saves setup time.
• Status LEDs on drives help quick diagnosis.
• Cleaning the IP65 housing is easy. Use mild soap and water.
• Firmware updates via USB or network tools.
• Brake replacement requires basic tools. Follow the manual.

Compatibility Information

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

Certifications

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

What’s in the Box

• HG-MR73B servo motor (with electromagnetic brake)
• Straight shaft key
• Mounting bolts (4 pieces)
• Quick start guide

Warranty & Shipping

• Warranty: 12 months from delivery. Covers factory defects.
• Dispatch: Ships in 12 to 24 hours after order.
• Carriers: FedEx, UPS, DHL – with tracking number.

Expert Review

The HG-MR73B shines in high-speed pick-and-place machines. Its ultra-low inertia cuts cycle times significantly. The brake holds position well even when power is off. IP65 rating means you can use it near coolants or dust. No oil seal, so avoid direct oil splash. For 0.75kW class motors, this model gives one of the best responsiveness. A solid choice for small robots and electronic assembly.

Manager’s Insight

From a stock and cost view, the HG-MR73B offers great value. The brake is built-in, saving external parts. 12-24 hour shipping reduces project waiting time. We keep steady inventory. Pair it with MR-J5 drive to cut energy use by up to 30%. For fast-moving lines, this motor pays back quickly. Recommended for OEMs building compact machines.

Typical Applications & Equipment

• Small Pick-and-Place Robots: Ultra-low inertia enables fast moves.
• Electronic Assembly Machines: Precise positioning at high speed.
• Labeling Machines: Smooth torque for consistent label feed.
• Desktop CNC Mills: Compact size fits small frames.
• Medical Dispensing Pumps: Quiet and accurate rotation.
• Packaging Indexers: IP65 resists dust from cardboard.

Frequently Asked Questions (FAQ)

• Does HG-MR73B work without a servo drive?No. You need a Mitsubishi MR-J4 or MR-J5 series drive to run it.
• Can I use this motor in a wet area?Yes. IP65 protects against water jets. But no oil seal, so avoid oil immersion.
• What is the brake holding torque?The brake holds 4.2 Nm minimum. Enough for vertical loads under 0.75kW.
• How do I select between HG-MR73B and HG-KR73BJ?Choose HG-MR73B for ultra-low inertia (faster response). Choose HG-KR73BJ if you need an oil seal.
• Is the 12-month warranty global?Yes. Warranty applies worldwide. Contact us for claim process.
• What shipping methods are available?We ship via FedEx, UPS, and DHL. Delivery in 3-7 business days typically.
• Can I get technical support for tuning?Yes. Email sales@powergearx.com or WhatsApp +86 18030005825. We help with parameters.

Quick Selection Guide

• Need very fast acceleration? Pick HG-MR73B. Ultra-low inertia is best.
• Working in oily areas? Choose HG-KR73BJ instead (has oil seal).
• Need absolute positioning? Both have absolute encoders.
• Brake required? This model includes it. No extra purchase.
• Check shaft size: 14 mm with keyway. Verify coupling fit.

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

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