Mitsubishi Electric

Mitsubishi Electric HG-SR301BJ HG-SR Series AC Servo Motor

SKU HG-SR301BJ

In stock
  • 12-month warranty
  • Free returns within 30 days
  • Manufacturer: Mitsubishi Electric

  • Product No.: HG-SR301BJ

  • Country of origin:United States

  • Product Type: AC Servo Motors

  • Payment: T/T, Western Union

  • Weight: 26000g

  • Shipping port: Xiamen

  • Warranty: 12 months

Description

Engineered for high-inertia industrial motion control, the Mitsubishi Electric HG-SR301BJ represents a robust AC servo solution designed to deliver precise torque and speed synchronization within demanding automation architectures. Incorporating a factory-fitted electromagnetic brake and a protective oil seal, this HG-SR Series motor is optimized for positioning applications requiring high torque at lower operational speeds. Its medium-capacity design makes it highly suitable for integration with MR-J4 servo amplifiers, ensuring seamless communication and high-resolution encoder feedback.

Key Features

  • High-Inertia Capability: Ideal for applications with fluctuating loads or heavy-duty mechanical linkages.
  • Electromagnetic Brake: Integrated holding brake configuration for secure position retention during power-off states.
  • Industrial Protection: Outfitted with an integrated oil seal to safeguard internal windings against industrial fluids.
  • Thermally Stable: Designed for continuous duty cycles under standard operating temperatures.

Applications

  • Heavy material handling and gantry positioning systems.
  • Metal processing and stamping press feed systems.
  • Large-scale packaging and indexing machinery.
  • Rotary table drives and high-torque machine tool axes.

Technical Specifications

Manufacturer Mitsubishi Electric
Model Number HG-SR301BJ
Series Name HG-SR Series
Rated Output 3.0 kW
Rated Speed 1000 r/min
Electromagnetic Brake Yes (Holding Brake)
Oil Seal Yes (Integrated)
Operating Temperature 0 to 40 degC (non-freezing)
Storage Temperature -15 to 70 degC (non-freezing)
Ambient Humidity Operating: 80% RH or less; Storage: 90% RH or less
Installation Environment Indoors, free of corrosive/flammable gases, oil mist, and dust
Altitude Maximum 1000 m above sea level
Vibration Resistance X-axis: 24.5 m/s2, Y-axis: 29.4 m/s2
Net Weight 26 kg
Shipping Weight (Calculated) 27 kg

Empirical Engineering Insights

Alternative Models & Compatibility

This unit is built to interface directly with Mitsubishi MR-J4 servo drive architectures. When substituting older HC-SFS series motors, verify amplifier firmware compatibility, parameter configuration adjustments, and shaft physical envelope clearances. Suffix "BJ" indicates a dedicated electromagnetic brake and an oil seal; standard "G" or non-brake variants are not direct plug-and-play drops without re-engineering the emergency-stop control loops and dynamic braking profiles.

Application Pitfalls & Engineering Notes

While the oil seal prevents lubricant ingress from gearboxes, continuous submersion or excessive splashing can compromise the sealing lip over extended operation. Ensure proper runout checks on the mechanical coupling to avoid radial or axial load concentrations that exceed the mechanical shaft bearing ratings, as excessive loading leads to premature bearing failure and high audible noise levels.

Commissioning & Wiring Tips

Always decouple the motor from the mechanical load during initial direction-of-rotation and encoder phasing checks. Run the motor's 24V DC brake supply on a dedicated, stabilized DC power line separate from the main controller logic power supply to prevent noise coupling and unexpected voltage drops that may cause brake chatter.

Installation Guidelines

CRITICAL WARNING Ensure all primary input power and auxiliary drive control circuits are completely de-energized and locked out before attempting installation or maintenance. Verify the DC bus voltage on the companion amplifier has fully discharged before handling any terminal connections.
1
Align the servo motor axis precisely with the load shaft using flexible couplings to minimize misalignment stresses.
2
Securely mount the motor flange to a rigid, flat, heat-dissipating surface using correct torque specifications for the mounting bolts.
3
Connect the motor power cable, encoder feedback line, and brake control lines, maintaining clear physical segregation from high-voltage supply lines to suppress electromagnetic interference.
4
Establish solid system ground connections at the designated grounding points on both the motor housing and the drive amplifier chassis.

FAQ

What is the function of the 'BJ' suffix in the model code?

The 'B' suffix denotes that the motor includes an integrated electromagnetic holding brake, and the 'J' suffix specifies that it is equipped with a factory-fitted oil seal for liquid ingress protection.

Can this motor run without an external 24V supply connected to the brake?

No. The integrated electromagnetic brake requires a constant 24V DC excitation to release. Operating the motor without releasing the brake will lock the shaft, causing an overcurrent fault on the drive.

Which Mitsubishi servo drive series is recommended for this model?

The HG-SR301BJ is designed for optimal performance when paired with the Mitsubishi MELSERVO-MR-J4 series amplifiers (specifically the 3.5 kW rating modules).

What are the temperature limits for operating this servo motor?

It is rated for operation in ambient environments ranging from 0 to 40 degC under non-freezing and non-condensing conditions.

View all FAQs →

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Global Express Shipping

  • Standard Delivery: 4-6 Business Days via DHL, FedEx, and UPS.
  • Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
  • Worldwide Coverage: Serving over 150 countries, including rapid delivery to Saudi Arabia and UAE.

Returns & Warranty

  • 30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
  • 12-Month Warranty: Every industrial component is backed by our professional technical warranty.

Orders are processed and delivered Monday-Friday (excluding public holidays).


For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .

TECHNICAL SPECIFICATIONS

Country of origin
United States

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