Part Number - HC-KFS73

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Product Details

  • Melservo HC Servo Motor (HCKFS73)
  • Manufacturer: Mitsubishi
  • Series: MELSERVO HC

Product Description

The Mitsubishi HC-KFS73 (HCKFS73) is a 750W servo motor from the Melservo HC series. This servo motor has a current which is 5.8A; however, the current is authorized to be as high as 18.6A. The moment of inertia is 1.51 J(x10^-4kg x m^2) or 8.255 J(oz x in). The torque of the HC-KFS73 servo motor is 2.4 (N x m) or 339.8 (oz x in). Still, the torque may be at most 7.2 (N x m) or 1019.5 (oz x in). Concerning the speed of the servo motor, the customary speed is 3000rpm with the greatest speed being 4500rpm. However, the speed may temporarily reach a zenith of 5175rpm. The HC-KFS73 servo motor also has the power measured by kVA of 1.3kVA. Lastly, the servo motor’s IP rating is IP55.

The HC-KFS73 servo motor may attach itself to four servo amplifiers. These are the applicable servo amplifiers: the MR-J2S-70A, MR-J2S-70B, MR-J2S-70CP, and MR-J2S-70CL. All of these servo amplifiers may be attached to the servo motor by connecting their CN2 port with its encoder. The HC-KFS73 servo motor may also link itself the servo amplifiers by clamping a few wires to the U, V, and W screw terminals so that it may be able to link itself to the power supply.

The HC-KFS73 servo motor is a low inertia motor. Besides this, this type of servo motor is also a small capacity. These motors may link by the spindle to a great number of devices that are applicable to this servo motor, devices suitable for this servo motor may be found in researching this item’s manual.

Here is the source material that may have been referenced:

Technical Specifications

Part Number: HC-KFS73 (HCKFS73)
Module Type: Servo Motor
Voltage: 103V
RPM: 3000r/min
Output Wattage: 750W
Weight: 6.61lbs (3.0kg)

Related Parts

HC-MFS73BK - Mitsubishi Melservo HC Servo Motor with Brake Key (HCMFS73BK)
HC-UFS72K - Mitsubishi Melservo HC Servo Motor with KEY (HCUFS72BK)
HC-UFS73 - Mitsubishi Melservo HC Servo Motor (HCUFS73)

Shipping and Order Information

  • TRW Supply can usually ship in stock items same day before 3:30 PM EST for no extra cost and before 5 PM with a rush fee
  • Mitsubishi MELSERVO HC Shipping options vary by location. Call for an accurate quote.


  • The Mitsubishi HC-KFS73 comes with a one-year warranty.

Additional Information

TRW Electric & Supply Company is a global automation supplier. We deliver reliable new and refurbished parts at a great value. Our product focus is Omron and Mitsubishi products, but we have been able to provide our customers with solutions from other manufacturers as well. Our goal is to supply the automation industry with the best service and pricing, and of course conduct business with a high level of integrity.

Authorized Distributors

A Mitsubishi Authorized Distributor for MELSERVO-HC is not the only source for Mitsubishi products. Many of the Mitsubishi products have been discontinued and therefore are no longer available from authorized suppliers. Mitsubishi Authorized Supplier of Mitsubishi Automation. TRW Electric & Supply has many new and refurbished Mitsubishi MELSERVO-HC parts available for purchase.

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