Products

AC Brushless Servo Motor CNC Axis – MITSUBISHI HC-MF 13-UE

The HC-MF 13-UE is an AC brushless servo motor (“AC Servo Motor”) from the HC-MF series manufactured by MITSUBISHI Electric, part of the MELSERVO product family. It is documented as an axis drive motor for CNC machine tools equipped with Mitsubishi servo amplifiers of the MR-SA, MR-J or compatible series. The UE suffix identifies a specific variant in terms of encoder or output shaft configuration. The HC-MF series is characterised by low inertia and high dynamic response, designed for rapid and precise positioning applications on machining centres, milling machines, and small to medium format CNC machines.

The servo motor is the electromechanical actuator that converts the torque and speed reference generated by the servo amplifier into precise mechanical movement of the linear or rotary axis. In a CNC machine tool, its failure results in complete loss of the affected axis: any machining operation involving that axis becomes impossible, causing immediate machine downtime and production loss. Loss of the integrated encoder signal can also trigger severe alarms on the CNC controller and potentially damage guideways if not correctly managed.

MITSUBISHI Electric is a Japanese multinational corporation and world leader in industrial automation, motion control, and power electronics. The MELSERVO family (HC-MF, HC-SF, HC-RF series and derivatives) has been a benchmark in the CNC sector since the 1980s. Products in the HC-MF series are legacy / discontinued: available exclusively as used, NOS surplus, or through specialist repair services.

Main Technical Specifications

AC Frequency Inverter 7.5 kW – Mitsubishi FR-SE-2-7.5K

The FR-SE-2-7.5K is an AC frequency inverter rated at 7.5 kW (“AC Frequency Inverter”) manufactured by Mitsubishi Electric, belonging to the FR-SE (Freqrol) series, designed for variable-speed control of three-phase asynchronous motors in industrial applications and CNC machine tools. The unit dynamically varies output frequency and voltage through PWM (Pulse Width Modulation) modulation to match motor speed to the machining cycle set by the numerical control. The 7.5 kW model is suitable for controlling medium-power spindles, hydraulic pumps, and auxiliary axes. The product may be available in multiple hardware revisions; some versions include an integrated operator panel and dedicated digital and analogue I/O.

The frequency inverter regulates AC motor speed by dynamically varying the supply frequency and voltage: this function is critical in CNC machine tools where spindle or auxiliary axis speed must accurately follow the parameters set by the numerical control. In the event of failure, the controlled motor loses all speed regulation and can no longer follow the CNC reference, making precision machining impossible and risking damage to the tool, workpiece, or machine itself.

Mitsubishi Electric is one of Japan’s leading multinationals in industrial automation, present in the frequency inverter market with the Freqrol (FR) line since the 1980s. The FR-SE series was a compact family designed for robust and straightforward industrial applications; all models in this series are legacy / discontinued and have been superseded by the more recent FR-E800 and FR-D800 series.

Main Technical Specifications

37 kW Frequency Inverter – Mitsubishi FR-AF740-00770-EC

The FR-AF740-00770-EC is a 37 kW frequency inverter (“Variable Frequency Drive” – VFD) manufactured by Mitsubishi Electric, belonging to the FREQROL-F740 series. The EC suffix identifies the European version (CE marking, compliant with applicable EN directives). Designed for heavy industrial loads such as spindle motors, pumps, and industrial fans, it operates on a three-phase 380–480 V AC supply and delivers variable voltage and frequency to the controlled AC motor. The F740 series supports both V/f control and sensorless vector control (Advanced Magnetic Flux Vector), with expansion capabilities via optional boards for the main industrial communication protocols.

The frequency inverter converts fixed-frequency mains voltage (50/60 Hz) into a variable-frequency, variable-voltage three-phase output, enabling precise speed control of an AC induction motor. In CNC machine tools it is typically used to drive the main spindle, lubrication pumps, or unit cooling fans. A drive failure causes the controlled motor to stop immediately and halts the machining process entirely, making it a critical component for production continuity.

Mitsubishi Electric is a division of the Mitsubishi Group (founded 1921) and one of the world’s leading manufacturers of industrial drives, factory automation, and power electronics. The FREQROL-F740 series was developed for high-efficiency applications in HVAC, pumping, and machine-tool markets. This family has since been superseded by the FR-F800 series; F740 products are legacy / discontinued and available primarily as surplus stock, tested used units, or through specialist repair services.

Main Technical Specifications

CNC Power Supply Unit – MITSUBISHI ETU-3MK0IZ

The ETU-3MK0IZ is a CNC power supply unit (“CNC Power Supply Unit”) manufactured by Mitsubishi Electric, designed to provide regulated supply voltages to all modules of the CNC system (CPU board, I/O boards, servo drives, and axis units). The code identifies a power supply unit from the MELDAS family or equivalent Mitsubishi Electric CNC series. The component is a dedicated switching unit, with specific connectors for the CNC rack internal bus. Revision variants may differ in output voltages or connector configuration.

The power supply unit is the heart of the control electronics: it generates and stabilises the DC voltages required by all modules of the CNC system. Without it the entire system remains inactive; even a partial fault — such as an out-of-tolerance output — can cause unexpected anomalies in machining cycles, loss of parameters, or damage to downstream modules.

Mitsubishi Electric is one of the world’s leading industrial automation manufacturers, with a CNC division operating under the MELDAS brand (later MELDASMAGIC and the M70/M700/M800 series). Support for legacy products is limited; components from older series are legacy / discontinued and available only as used units or through specialist repair services.

Main Technical Specifications

Analog-to-Digital Converter Module – MITSUBISHI ADC-04D

The ADC-04D is an analog-to-digital converter module (“Analog-to-Digital Converter Module”) manufactured by Mitsubishi Electric, designed for CNC and industrial automation control systems of the MELDAS series and compatible architectures. The unit acquires analog voltage or current signals from sensors, transducers, or potentiometers and converts them into digital values that can be processed by the CNC controller. The designation ADC-04D identifies a converter with 4 independent analog input channels; the trailing letter “D” denotes the hardware variant or revision. Depending on the host system architecture, it may be installed as a plug-in board on a backplane or as a standalone module.

The A/D converter module performs an essential role in bridging the physical world of analog signals and the digital logic of the numerical controller: without it the CNC cannot read continuous quantities such as positions, temperatures, pressures, or speeds. A failure in the converter manifests as incorrect or missing feedback channel readings, feedback alarms, and immediate machine stops, making any machining cycle impossible.

Mitsubishi Electric is one of Japan’s largest multinational electronics and industrial automation conglomerates, with over a century of history. Its FA (Factory Automation) division produces the world-class MELDAS / M700 / M800 CNC controller series, MELSERVO servo drives, and MELSEC PLCs. Products in the ADC-04D family belong to earlier-generation control architectures and are to be considered legacy / discontinued: availability is limited to the used market and specialist repair services.

Main Technical Specifications

Transistor Drive Unit – Mitsubishi TRS 75B

The TRS 75B is an electronic transistor drive unit for servo/spindle motors (“Transistor Drive Unit”) manufactured by Mitsubishi Electric, belonging to the TRS series of transistorised drive amplifiers. It is documented as a drive control unit in CNC systems based on Mitsubishi MELDAS controllers and Japanese machining centres / lathes from the 1980s–1990s. It manages the motor speed and current regulation loops, interfacing with the power module and the numerical controller. The suffix 75B identifies the current/power size variant and the board revision within the series.

The transistor drive unit is the core of the axis or spindle control system: it receives the speed reference from the CNC, closes the feedback loop with the motor encoder or tachogenerator, and drives the power transistors to deliver the current required for the demanded torque. A failure of this unit results in complete loss of control of the connected motor, causing immediate axis or spindle shutdown and making any further machining impossible.

Mitsubishi Electric is one of the world’s leading manufacturers of CNC systems, servo drives, and servo motors for machine tools, with over 50 years of experience in the industry. The TRS series belongs to the legacy generation of Mitsubishi’s product range; these products are legacy / discontinued and available exclusively as used, NOS surplus, or through specialist repair.

Main Technical Specifications

CNC Power Supply Unit – MITSUBISHI SF-PWH

The SF-PWH (internal part number SFPWH) is a switching power supply module for CNC control systems (“CNC Power Supply Unit”) manufactured by Mitsubishi Electric. The unit belongs to the family of power supply modules designed for the control boards of MELDAS-series and related Mitsubishi numerical control systems. It delivers the regulated DC voltages required by the control logic, axis modules, and operator panel interfaces; the PWH suffix identifies the specific power rating and mechanical form factor variant. Verify the installed hardware revision before replacement, as connector configurations may differ between variants.

The power supply unit is the energy core of the CNC rack: it converts mains voltage (or DC bus) into multiple stabilised outputs that are essential for the operation of the CPU, I/O boards, axis drives, and display. Even a partial failure on a single output rail can trigger unpredictable system faults, undiagnosable errors, or secondary damage to downstream boards; its condition directly determines the overall availability of the machine tool.

Mitsubishi Electric is one of the world’s leading manufacturers of industrial automation systems, motion control, and numerical controllers. The FA (Factory Automation) division has produced the MELDAS, MELDASMAGIC, and more recent M70/M80 CNC series for decades. Components in the SF-PWH series belong to earlier generations of CNC controls and are to be considered legacy / discontinued: availability is limited to the used, surplus, and specialist repair channels.

Main Technical Specifications

CNC Power Supply Unit – MITSUBISHI SF-PW30

The SF-PW30 is a switching power supply module (“Power Supply Unit”) manufactured by Mitsubishi Electric, belonging to the SF series of CNC system components and servo drive accessories. The internal part number is SFPW30. The unit provides the stabilised DC supply voltages required by logic boards and control modules within the CNC rack, interfacing with the main system or drive chassis. It is documented on MELDAS CNC systems and SF-series Mitsubishi Electric drives; the suffix “30” presumably denotes the nominal power rating in watts or a size variant.

The power supply is the energy backbone of the CNC system: it converts and regulates mains voltage into precise DC rails (+5 V, ±15 V, +24 V) that power the CPU, axis control boards and logic circuits throughout the controller. A power supply failure causes the immediate shutdown of the entire machine: without stable supply voltages no CNC module can operate correctly, making this component critical for production continuity and system safety.

Mitsubishi Electric is one of the world’s leading manufacturers of CNC systems, servo drives and industrial automation equipment, with over a century of history in electrical and electronic engineering. The FA (Factory Automation) division produces the MELDAS and MELSERVO systems, widely deployed across global manufacturing. SF-series products in their older versions are considered legacy / discontinued: availability must be verified through specialist CNC spare-parts distributors.

Main Technical Specifications

CNC Power Supply Module – MITSUBISHI SE-PW

The SE-PW is an electronic power supply module for CNC control units (“CNC Power Supply Module”) manufactured by Mitsubishi Electric, documented as a component of Mitsubishi MELDAS series CNC systems. The module converts mains voltage into regulated, filtered DC voltages distributed to the CNC control boards (digital logic, analogue interfaces, I/O). It is not a regulation board or servo drive, but a dedicated power supply unit serving the entire control electronics of the machine.

The CNC power supply module is the component that converts and distributes electrical power to all circuits of the numerical control unit: without stable, filtered output voltages the CNC cannot start up or operate. A power supply failure causes an immediate and total machine shutdown; out-of-tolerance output voltages can also damage connected boards, making replacement an urgent, high-priority intervention above any other electronic fault.

Mitsubishi Electric is one of Japan’s leading industrial automation manufacturers, active in the CNC sector with the MELDAS line since 1970. The FA (Factory Automation) division produces numerical controls, servo motors and drives used worldwide in the metalworking industry. Components of the SE series are to be considered legacy / discontinued: sourced primarily as used, surplus or through specialist repair services.

Main Technical Specifications

CNC Power Supply Unit – MITSUBISHI SF-PW

The SF-PW is a CNC power supply unit (“CNC Power Supply Unit”) manufactured by Mitsubishi Electric, designed to provide regulated DC supply voltages to the internal boards of MELDAS-series and related CNC numerical control systems. The unit converts mains AC voltage into multiple regulated DC outputs (+5 V, ±12 V, ±15 V, +24 V typically) required by control logic, interfaces and axis boards. The commercial part number is SF-PW (internal article code: SFPW).

The power supply is the energy core of the CNC system: without stable, well-regulated voltages the entire control unit cannot operate. A failure typically manifests as inability to power on, voltage-out-of-range alarms, spontaneous resets, or secondary damage to downstream boards. Replacement or repair of this unit is often the first diagnostic step in the event of complete machine downtime.

Mitsubishi Electric is one of the world’s leading manufacturers of CNC systems, servo and spindle drives, and industrial automation. The FA (Factory Automation) division produces numerical controllers from the MELDAS series up to the modern M800/M80 platforms. Products from legacy series such as MELDAS are to be considered legacy / discontinued as new parts: available primarily as used, surplus or through specialist repair.

Main Technical Specifications

CNC Power Supply Unit – MITSUBISHI QX086

The QX086 is a switching power supply module (“Power Supply Unit”) manufactured by Mitsubishi Electric, a component of CNC systems in the MELDAS or M-series family. It provides the regulated DC voltages required by the logic, control and communication boards of the CNC system. The part number QX086 uniquely identifies the module within the Mitsubishi Electric catalogue; it is compatible with CNC control cabinets using the proprietary Mitsubishi power bus standard. Compatibility with the specific machine should be verified before installation.

The power supply unit converts mains voltage into regulated DC voltages essential for the operation of all electronic boards in the CNC system. A failure in the power supply causes the immediate shutdown of the entire control unit: the machine is unable to execute any programme or move any axis. Unstable or missing supply voltages can also damage downstream logic boards through transient over- or under-voltage conditions, making this component absolutely critical for production continuity and for protecting the other modules in the system.

Mitsubishi Electric is one of the main divisions of the Japanese industrial group Mitsubishi, active in industrial automation, CNC numerical controls (MELDAS line and M-series, M70, M700, M800) and servo drive technology. CNC products from the MELDAS series of the 1980s–1990s and early M-series versions are now legacy / discontinued: availability is limited to used parts, NOS (new old stock) and specialist repair.

Main Technical Specifications

CNC Power Supply Unit – MITSUBISHI PD23A

The PD23A is a CNC power supply unit (“CNC Power Supply Unit”) manufactured by Mitsubishi Electric, documented as a component of the MELDAS series CNC controllers. The module converts the mains supply into multiple regulated DC outputs distributed to the logic boards, interface modules and servo drives of the CNC system. It is not a power drive module for axes or spindle, but the primary power source for the control electronics.

The CNC power supply is the component that delivers regulated power to all boards and modules in the control system: without it the CNC cannot start up or perform any function. A power supply failure results in complete loss of the operator panel, no communication with the axes and an immediate machine stop; it is therefore one of the most critical components for production continuity.

Mitsubishi Electric is one of the world’s leading manufacturers of CNC systems, servo drives and industrial automation, with a long-standing presence in the machine tool sector since the 1970s. The Mitsubishi CNC division produces the MELDAS, M70, M700 and M800 controller series. Components from older series such as the PD23A are legacy / discontinued and available only as used stock, NOS surplus, or through specialist repair.

Main Technical Specifications