Part Number - HF-KP43K

HF-KP43K is

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Product Details

  • HF Series Servo Motor with Key (HFKP43K)
  • Manufacturer: Mitsubishi
  • Series: HF Series

Product Description

The Mitsubishi HF-KP43K (HFKP43K) is a servo motor with a key from the HF series. The servo motor spindle speed is normally 3000rpm but it is allowed to increase to 6000rpm and may even briefly reach a speed of 6900rpm. The current of the servo motor is 2.7 Amp, but it can be augmented to 8.1A. The HF-KP43K servo motor has a torque of 1.3 (N x m) or 184 (oz x in). Nevertheless, the torque may increase to 3.8 (N x m) or 538 (oz x in). Lastly, the moment of inertia of the servo motor, because it does not have a brake is 0.42 J(x10^-4kg x m^2) or 2.30 J(oz x in^2).

The HF-KP43K servo motor has the ability to connect to many servo amplifiers. There are four of them, and they are MR-J3-20A, MR-J3-20B, MR-J3-20B-RJ006, and MR-J3-20T. There are a couple ways to connect these amplifiers to the servo motor with key. At first, the HF-KP43K servo motor may attach link to the CN2 port of any of the servo amplifiers. It may also connect to the CNP3 connector which may also be called a U, V, W terminal.

The HF-KP43K servo motor is a motor with a small capacity, but it is also low inertia motor because it is of the HF-KP series. This type of servo motor may link with sundry of applications that are able of functioning with this servo motor with a key.

Here is the source material referenced:

Technical Specifications

Part Number: HF-KP43K (HFKP43K)
Module Type: Servo Motor with Key
RPM: 3000r/min
Output Wattage: 400W
Weight: 3.3lbs (1.5kg)

Related Parts

HF-JP73 - Mitsubishi HF Series Servo Motor (HFJP73)
MR-J4-100B - Mitsubishi Melservo MR-J4 Amplifier
A4UCPU - Mitsubishi INPUT OUTPUT Controller

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 HF Series Shipping options vary by location. Call for an accurate quote.


  • The Mitsubishi HF-KP43K 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 HF-SERIES 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 HF-SERIES parts available for purchase.

More Information: HFKP43K, HF KP43K, HFKP 43K

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