Mitsubishi Electric

Mitsubishi Electric HF-SP121B HF-SP Series AC Servo Motor

SKU HF-SP121B

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

  • Product No.: HF-SP121B

  • Country of origin:United States

  • Product Type: AC Servo Motors

  • Payment: T/T, Western Union

  • Weight: 19000g

  • Shipping port: Xiamen

  • Warranty: 12 months

Description

Engineered for high-performance motion control systems, the Mitsubishi Electric HF-SP121B AC Servo Motor provides medium-inertia rotation and robust dynamic response. Operating at a rated output of 1.2 kW with a synchronous speed of 1000 r/min, this industrial-grade motor features an integrated electromagnetic safety brake designed to lock mechanical loads securely in place during power loss or system shutdown. Its optimized rotor design provides a stable torque-to-inertia ratio, making it an exceptional choice for heavy industrial applications requiring precise positioning and reliable load-holding capabilities.

Features

  • Medium Inertia Design: Ideal for loads with fluctuating inertia profiles or mechanical resonance challenges.
  • Integrated Electromagnetic Brake: 24V DC electromagnetic holding brake ensures safety and load retention in vertical axes.
  • High Torque Stability: Rated for smooth power delivery at a baseline speed of 1000 r/min.
  • Rugged Environmental Class: Built for typical manufacturing floor conditions with high resistance to vibration and dust ingress.

Applications

  • Vertical axis lift mechanisms and Z-axis gantries.
  • Material handling systems and transfer lines.
  • Automated packaging systems and heavy indexing tables.
  • Feed drives for CNC machine tools and industrial metal processing.

Technical Specifications

Manufacturer Mitsubishi Electric
Model HF-SP121B
Series HF-SP Series (Medium Inertia)
Rated Output 1.2 kW
Rated Speed 1000 r/min
Electromagnetic Brake Installed (Holding Brake Type)
Operating Temperature Range 0 to 40 degC (non-freezing)
Storage Temperature Range -15 to 70 degC (non-freezing)
Operating Humidity Limit 80% RH maximum (non-condensing)
Maximum Installation Elevation 1000m or less above sea level
Vibration Resistance X: 24.5 m/s2, Y: 49 m/s2
Net Weight 18 kg
Shipping Weight (Calculated) 19 kg

Empirical Engineering Insights

Alternative Models & Compatibility

The HF-SP121B is designed primarily for integration with matching MR-J3-150A(1)/B(1) series servo amplifiers. When replacing older HC-SFS or HC-RFS series motors, confirm the mounting flange PCD and encoder feedback parameters in the parameters of your MR Configurator software, as gain settings will require adjustment to prevent mechanical resonance.

Application Pitfalls & Engineering Notes

Always ensure that your configuration accounts for thermal radiation. The continuous torque capability of the HF-SP121B is rated based on installation on a heat-dissipating aluminum flange. Operating the motor continuously at high duty cycles in ambient temperatures exceeding 40 degC without adequate ventilation will degrade winding insulation and trigger amplifier overtemperature faults.

Commissioning & Wiring Tips

The built-in electromagnetic brake is dedicated strictly for holding and must not be used for deceleration. Ensure a dedicated, surge-protected 24V DC power supply is used to operate the brake, keeping its line completely separate from the encoder and motor power wiring to mitigate electromagnetic interference.

Installation Guidelines

CRITICAL WARNING

Ensure all main power and control power sources to the servo drive are completely de-energized before mounting or servicing the motor. Allow at least 15 minutes for the drive's internal bus capacitors to discharge. Verify the absence of voltage with a properly rated multimeter before making contact with terminal connections.

1

Flange Alignment: Align the shaft center of the servo motor with the mechanical load shaft. Misalignment exceeding specifications will lead to premature bearing failure and potential shaft damage.

2

Brake Control Wiring: Wire the electromagnetic brake relay circuit using the recommended surge absorber. Do not power the brake circuit using the control power supply of the servo amplifier.

3

Environmental Check: Secure all IP-rated connectors to prevent exposure to heavy oil mist, moisture, or metallic dust. Run cabling downward to create a drip loop near the motor connector.

FAQ

Can the electromagnetic brake on the HF-SP121B be used for emergency braking?

No. The built-in brake is exclusively a holding brake designed to maintain position when the motor is stopped. Using it to stop a spinning motor will cause severe mechanical wear and premature brake failure.

Which Mitsubishi servo amplifiers are compatible with this motor?

The HF-SP121B is designed to pair directly with MR-J3-150A and MR-J3-150B servo amplifiers. It can also be integrated into MR-J4 systems using standard compatibility settings.

What is the consequence of exceeding the 40 degC operating temperature?

Exceeding 40 degC reduces heat dissipation, which can cause the winding temperature to rise rapidly. To prevent thermal faults or permanent insulation degradation, you must derate the continuous torque output.

View all FAQs →

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  • Standard Delivery: 4–6 business days via DHL, FedEx, and UPS.
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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 technical warranty.
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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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