Mitsubishi HC-MF73K-D52 (HCMF73KD52) — 750W MELSERVO-J2S Servo Motor with Brake

Mitsubishi · MELSERVO-J2 / J2S · HC-MF Series · 750W Low-Inertia · In stock

The Mitsubishi HC-MF73K-D52 (model code HCMF73KD52) is a small-capacity low-inertia AC servo motor from the MELSERVO-J2 / J2S HC-MF family. Rated at 750 W (1 HP) on a 200 V three-phase bus, it spins up to a 3000 rpm rated speed and pairs naturally with the MR-J2S-70A, MR-J3-70A, and MR-J2M servo drives widely deployed across our Mitsubishi inventory. The "D52" suffix denotes the electromagnetic brake plus dedicated connector / cable variant — a common pick for vertical-axis and load-holding duty on pick-and-place heads, indexing tables, and small Z-axis slides.

Key Technical Specifications & Overview

Need the bare (no-brake) sibling or a different frame size? Browse the full lineup in our Mitsubishi servo motor catalog including HC-MF23 (200 W), HC-MF43 (400 W), and the brake-only K variants.

Application Scenarios — Where the HC-MF73K-D52 Fits

The HC-MF73K-D52 is sized for the "in-between" duty cycle that sits above small stepper or 200 W servo territory but below 1.5 kW industrial servos. Its low-inertia rotor gives crisp acceleration, and the on-board holding brake removes the need for an external fail-safe in vertical or inclined axes. Typical deployments include:

• Semiconductor pick-and-place heads, die bonders, and wafer-handling Z-axes
• Small CNC routers, PCB drilling / milling stations, and engravers
• Packaging lines — label applicators, sleeve wrappers, and horizontal form-fill-seal
• SMT pick-and-place feeders, vision-indexed conveyors, and dispenser slides
• Life-science lab automation — liquid-handler pipette heads, microplate stackers
• Indexing tables, dial machines, and rotary assembly turrets (with brake for indexed stop)
• Replacement of legacy HC-MF73 / HC-MF73B motors on aging MELSERVO-J2 cells

If your line mixes brands, KOEED carries a matching breadth of Allen-Bradley Kinetix servo motors, Siemens SIMOTICS S-1FL6 / 1FK7 servos, Omron R88M units, Fanuc alpha/beta motors, and Yaskawa Sigma-7 / Sigma-V servos. We can also support Schneider Lexium, Panasonic Minas A6, and KEYENCE positioning modules on the same BOM.

Integration & Wiring Notes

The HC-MF73K-D52 is a drop-in companion for the MELSERVO-J2 / J2S amplifier family. The encoder cable (typically MR-JCCBLNNNN) and the power cable (MR-PWCNK) are detachable, with the "D52" suffix specifying the connector orientation and lead-out. The brake leads share the motor power connector or a separate 2-pin brake plug depending on the cable option ordered.

• Encoder side: 131072 ppr incremental signals — A/B/Z phase, 5 V line driver. Use shielded twisted-pair and route away from VFD / brake contactor coils.
• Brake power: 24 V DC, ~0.5 A typical; never switch the brake on the AC bus. Most MR-J2S amplifiers expose a dedicated brake release output for clean timing.
• Drive pairing: For pulse-train / analog control use MR-J2S-70A; for SSCNET, the matching MR-J2M module pairs with an MR-J2-CR or MR-J2-MC controller head.
• Regeneration: 750 W applications usually do not need an external regen resistor, but high-decel vertical axes benefit from a small MR-RB032 or MR-RB14 unit.
• EMC: Earth the motor frame to the cabinet ground bus; route encoder / brake cables in a separate duct from power wiring.

For a deep dive on the MELSERVO-J2 / J2S / J3 / J4 migration path and which amplifier parameters must be reset, see our MELSERVO-J2S to J4 migration notes or open the PLC error code lookup to decode any AL-series alarms on first power-up.

Installation & Commissioning Tips

A small-capacity servo is forgiving to install but easy to damage by skipping torque checks. Run through this short checklist before energizing the bus:

• Confirm shaft key is fully seated and the coupling is rated above the motor’s peak torque (typically 2.4× rated for HC-MF73K).
• Verify oil-seal orientation matches the IP rating on your panel. The standard HC-MF73K-D52 is IP65 (excluding shaft feed-through); order a J suffix for harsher washdown.
• Pre-load the drive with MR Configurator 2 (or the older MRZJW3-SETUP for J2/J2S) and reset to factory defaults before importing a project file.
• Auto-tune in "one-touch" mode after the load is coupled; do not run auto-tune on a free, uncoupled shaft.
• For vertical axes, energize the brake release before lifting the load, and add a hardware interlock on the brake contactor to prevent free-fall on power loss.
• Check the encoder battery / absolute backup only if you migrate to the HA-MF or HG-MR equivalent — the HC-MF73K-D52 ships with an incremental encoder that does not need a battery.
• Validate overshoot on a no-load move before connecting a fragile tooling holder; the low-inertia rotor can ring at the load resonance if the gain is too aggressive.

Engineers looking to size upstream fuses, braking resistors, or DC bus capacitance can use the free PLC analog calculator and Modbus CRC calculator on the KOEED toolset, or open the AI diagnostic tool for 24/7 help decoding MELSERVO alarms.

Procurement, Warranty & Lead Time

KOEED is an independent multi-brand industrial-automation distributor, not an OEM subsidiary of Mitsubishi. The HC-MF73K-D52 we ship is sourced from authorized channels and inspected before packing. Standard quotation terms:

• Quote turnaround: within 24 hours on business days.
• Lead time: in-stock units typically ship in 2–5 working days from our Hong Kong / Shenzhen warehouse; larger or special-cable variants may add 1–2 weeks.
• Warranty: 12 months from invoice date on defects in materials and workmanship, in line with our return policy.
• Worldwide shipping: DHL / FedEx / UPS for parcel, sea / air freight for palletized multi-line orders.
• Full-BOM quotation: send the whole instrument list — amplifier, cables, controller, HMI, sensors — and we quote the lot in one email.
• Hard-to-find & EOL specialists: obsolete MELSERVO-J2 / J2S parts and matching HC-KF / HC-MF / HA-FF / HF-KP variants can usually be located within 48–72 hours.

Related part numbers: HC-MF73 · HC-MF73B · HC-MF43 · HC-MF23 · MR-J2S-70A · MR-J3-70A · Mitsubishi brand collection. For questions or a BOM review, write to Moritta@KOEED.COM.