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Kulthorn replacement motor needed

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zepfan
zepfan Member Posts: 457
in THE MAIN WALL

does anyone know if this motor manufacturer (Kulthorn Electric) has any distributors in the USA? It appears the company is based out of Thailand.
The pictured motor is defective and the only information on the nameplate is the part # KHF4Q4701, 115 voltage, and 6.3 amps. With no frame size, or RPM we are having a hard time finding a generic replacement. The motor is out of a sidewall ventilator, with no manufacturer’s nameplate. Any assistance would be much appreciated. Thanks to all.

IMG_8089.jpeg

Comments

  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 20,100

    I couldn't find any US information or a distributor. Strange to have a motor with no frame and lacking other information.

    EdTheHeaterManzepfan
  • EdTheHeaterMan
    EdTheHeaterMan Member Posts: 12,069
    edited March 6

    What we know from available surplus / industrial parts listings:

    • Manufacturer: Kulthorn Electric Co.
    • Model: KHF4Q4701
    • Type: AC electric motor PSC type
    • Voltage: 115 V AC
    • Frequency: 60 Hz
    • Current: 6.3 A
    • Capacitor required 30 μF 440 VAC
    • Thermal protection: Yes (built‑in)
    • Status: Discontinued by manufacturer
    • Weight (approx.): ~21 lbs (≈9.5 kg)

    What we don't know

    • Rated output horsepower (HP or kW)
    • Speed (RPM)
    • Torque curves
    • Frame size and mounting details
    • Insulation class
    • Shaft dimensions

    Where you might be able to find that information:

    An OEM service manual from the original equipment where it was installed. They often have the motor speed and horse power ratings in the specifications.

    What is the appliance you removed the motor from? Make and model number?

    Are thare any other appliances just like that one on the property? or is this one unique?

    Edward Young Retired

    After you make that expensive repair and you still have the same problem, What will you check next?

  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 20,100

    @EdTheHeaterMan the op said it is a sidewall ventilator with no nameplate.

    EdTheHeaterManzepfan
  • mattmia2
    mattmia2 Member Posts: 16,533

    you can measure it to find the frame size. 6a at 120v is usually around 1/3 hp. could probably get one of those universal multi hp motors if you can figure out the speed. could take it to a good motor shop and have them figure it out, if you know what you're looking at, how it is wound will tell you the speed.

    zepfan
  • EdTheHeaterMan
    EdTheHeaterMan Member Posts: 12,069
    edited March 6

    @EBEBRATT-Ed it probably had a label on the outside that was sun bleached or weather removed. What are the dimensions of the fan blade attached to the motor? Perhaps WW Grainger has one that is similar dimension in their catalog that you can look at the specifications for. Overall dimension, fan blade dimension, HP, CFM requirement, etc., etc., etc. (from The King and I) That is my next move in that situation.

    Edward Young Retired

    After you make that expensive repair and you still have the same problem, What will you check next?

    zepfan

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