MITSUBISHI HF-SP131MK-S12 AC Servo Motor 98.2V 9.3A 1.3kW

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The MITSUBISHI HF-SP131MK-S12 is an AC servo motor from the HF-SP series designed for precision motion control in CNC machine tools and industrial automation systems. It is widely used as a replacement motor to restore positioning accuracy, maintain machine performance, and reduce downtime in production environments.

Rated at 1.3 kW, the HF-SP131MK-S12 operates with a nominal voltage of 98.2 V and a rated current of 9.3 A. When paired with a compatible Mitsubishi MELSERVO amplifier, it delivers stable speed regulation, precise positioning, and consistent torque output, making it suitable for demanding continuous-duty applications.

Within a CNC system, this servo motor converts motion commands from the drive into accurate rotary movement for feed axes, gantries, indexing systems, and other mechanical assemblies. It is commonly installed on machining centers, CNC lathes, automated transfer systems, pick-and-place equipment, and other industrial machines where fast response and repeatable motion are critical.

Installation should follow the specifications of the HF-SP product family. Shaft configuration, connector orientation, encoder feedback type, and amplifier compatibility should be verified to ensure seamless integration with the existing machine setup. Matching the original motor specifications helps achieve a straightforward replacement process and maintains the intended machine performance.

The HF-SP131MK-S12 is frequently selected as a direct replacement for failed or worn servo motors during maintenance operations. Keeping a compatible spare motor in stock helps minimize unplanned downtime and supports efficient maintenance planning. For machine overhauls and retrofit projects, replacing the motor with the same HF-SP model simplifies installation and commissioning.

Each motor is inspected and tested by qualified engineers to verify electrical performance and feedback functionality where applicable. Protective packaging safeguards the motor shaft and connectors during transport, ensuring safe delivery for industrial use. Worldwide shipping and warranty coverage are available subject to supplier terms and stock availability.

This servo motor is also a practical emergency spare part for legacy CNC equipment. Repair and exchange services may be available depending on the condition of the unit and component availability, helping manufacturers extend machine life, maintain productivity, and avoid costly production interruptions.

Frequently asked questions about HF-SP131MK-S12:

How do I confirm this motor will drop in for my machine?
Verify the full nameplate code against your existing unit and confirm the same voltage, power rating and option codes. Check shaft style, connector orientation and feedback type to ensure mechanical and electrical match.

Which servo amplifiers are typically used with this model?
Use the Mitsubishi servo amplifier specified for HF-SP motors in the same voltage and power class. Refer to the drive’s documentation and the motor nameplate to validate compatibility before ordering.

What feedback or brake configuration does it use?
The HF-SP line supports different feedback and mechanical options that are defined by the option code on the label. Confirm the exact encoder specification and any holding brake requirement on your installed motor before selecting a replacement.

Can this unit be used for retrofit projects?
Yes, provided the mechanical interface and electrical ratings align with the target axis and the chosen Mitsubishi amplifier. Many rebuild shops use HF-SP motors for controlled retrofits when maintaining Mitsubishi-based motion platforms.