Part Number - HC-KFS73B

HC-KFS73B is

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Product Details

  • Melservo HC Servo Motor with Brake (HCKFS73B)
  • Manufacturer: Mitsubishi
  • Series: MELSERVO HC

Product Description

The Mitsubishi HC-KFS73B (HCKFS73B) is a 750W Melservo HC servo motor with a brake. This servo motor has a torque of 2.4 (N x m) 339.8 (oz x in). But the torque is permitted to augment to 7.2 (N x m) 1019.5 (oz x in). The current appraised is 5.8A, but it may be at most, 18.6A. The HC-KFS73B servo motor with a brake, has a moment of inertia of 1.635 J(x10-^4kg x m^2) or 8.938 J(oz x in^2). Then the speed of the servo motor is 3000rpm but is authorized to increase to 4500rpm. Even so, the speed it is allowed for a short time to run at is 5175rpm.

There are four amplifiers which are capable of linking to the HC-KFS73B servo motor with a brake. These are the motors that may be applied: the MR-J2S-40A, MR-J2S-40B, MR-J2S-40CP, and MR-J2S-40CL. These amplifiers can connect to the HC-KFS73B servo motor by a few modes. The encoder belonging to the servo motor with brake can connect to any of the optional servo amplifier’s CN2 port. Also the U, V, and W screw terminals may link to the HC-KFS73B servo motor as its power supply.

Since the HC-KFS73B servo motor with a brake is from the HC-KFS series, it is a low inertia motor that may attach by its spindle to a large variety of devices applicable to such motors. This motor with a brake is also a small capacity motors.

Here is the source material that may have been referenced:

Technical Specifications

Part Number: HC-KFS73B (HCKFS73B)
Module Type: Servo Motor with Brake
Voltage: 111V
RPM: 3000r/min
Output Wattage: 750W
Weight: 8.81lbs (4.0kg)

Related Parts

MR-J2S-10B - Mitsubishi Melservo MR-J2 Servo Amplifier (MRJ2S10B)
MR-J2S-10A1 - Mitsubishi Melservo MR-J2 Servo Amplifier (MRJ2S10A1)
HC-KFS13 - Mitsubishi Melservo HC Servo Motor (HCKFS13)
HC-KFS13K - Mitsubishi Melservo HC Servo Motor with Key (HCKFS13K)

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-KFS73B comes with a two year warranty.
  • A three year warranty is available. Please inquire for pricing.

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. TRW Electric & Supply has many new and refurbished Mitsubishi MELSERVO-HC parts available for purchase.

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