400w dc motor





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Thread: 400w dc motor

  1. #1
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    Default 400w dc motor

    Hope this question is in the right place.

    I need about 400w with a shaft speed of about 500rpm.

    I want to go dc because then I am not bound to the input power.(110v-220v)

    Any suggestions?

    Want to design a lightweight Timken friction tester.

    The current jig is 12,5kg. Need to scrub that weight, plenty.
    Last edited by Henris; 2020/03/07 at 05:25 PM.
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    Default Re: 400w dc motor

    Quote Originally Posted by Henris View Post
    Hope this question is in the right place.

    I need about 400w with a shaft speed of about 500rpm.

    I want to go dc because then I am not bound to the input power.(110v-220v)

    Any suggestions?

    Want to design a lightweight Timken friction tester.

    The current jig is 12,5kg. Need to scrub that weight, plenty.
    DC motors are notoriously difficult to control the speed without effecting the Power, and most run in the many thousands of RPM.

    I don't know of any DC motor that runs at anywhere near that speed without a gearbox.

    I would rethink the requirement.
    Cheers

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    Default Re: 400w dc motor

    This might sound stupid with my limited knowledge but canít you use a stepper/servo motor?
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    Default Re: 400w dc motor


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    Default Re: 400w dc motor

    Quote Originally Posted by Henris View Post
    Hope this question is in the right place.

    I need about 400w with a shaft speed of about 500rpm.

    I want to go dc because then I am not bound to the input power.(110v-220v)

    Any suggestions?

    Want to design a lightweight Timken friction tester.

    The current jig is 12,5kg. Need to scrub that weight, plenty.
    With drilling machine as cheap as they are it would be your best bet. Get a good low speed drill after it'd own gearbox that turns at about 600 r.p.m otherwise you will have low power if you use a high speed drill if you reduce the speed. You can always use a SCR/TRIAC speed control. Drill motors are universal and can be run on AC or DC.

    Makita do make a 900rpm big drill but I have no idea of the price.

    What would be wrong with AC that you want to power it from DC?

  6. #6
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    Default Re: 400w dc motor

    Try a windscreen wiper motor.

  7. #7
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    Default Re: 400w dc motor

    Quote Originally Posted by HobieDave View Post
    Try a windscreen wiper motor.
    It runs at 24 rpm

  8. #8
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    Default Re: 400w dc motor

    Countries run diff AC.
    But I will def look into the drills.
    Quote Originally Posted by ekkekan View Post
    With drilling machine as cheap as they are it would be your best bet. Get a good low speed drill after it'd own gearbox that turns at about 600 r.p.m otherwise you will have low power if you use a high speed drill if you reduce the speed. You can always use a SCR/TRIAC speed control. Drill motors are universal and can be run on AC or DC.

    Makita do make a 900rpm big drill but I have no idea of the price.

    What would be wrong with AC that you want to power it from DC?
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    Default Re: 400w dc motor

    Quote Originally Posted by faniedup View Post
    It runs at 24 rpm
    Sorry, that should read 120 rpm

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    Default Re: 400w dc motor

    Quote Originally Posted by Henris View Post
    Countries run diff AC.
    But I will def look into the drills.
    Nearly all modern power supplies can run off virtually any freq or voltage. Somebody is probably going to need one of those to make the DC anyhow.
    Cheers

    ZS5KAD
    3 V8's
    NA TwinTurbo SuperCharger
    A V6 and an inline 4

    The frogs are starting to notice that the water is getting warm but it is already too hot to do anything about it.....

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    Default Re: 400w dc motor

    How about a Centurion D5 gate motor. The motor inside is normally 800W 12V DC.

    I have built one onto my lathe as a cross feed drill, running through a PWM speed control. Can control speed from about 5rpm to 3000rpm.

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    Default Re: 400w dc motor

    Quote Originally Posted by ghouwens View Post
    How about a Centurion D5 gate motor. The motor inside is normally 800W 12V DC.

    I have built one onto my lathe as a cross feed drill, running through a PWM speed control. Can control speed from about 5rpm to 3000rpm.
    You have to show us a pic of this as well.

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    Default Re: 400w dc motor

    Quote Originally Posted by plunger View Post
    You have to show us a pic of this as well.
    https://www.homemadetools.net/forum/...nd-drill-75246
    Last edited by ghouwens; 2020/03/29 at 08:03 PM.

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    Default Re: 400w dc motor

    Quote Originally Posted by ghouwens View Post
    How about a Centurion D5 gate motor. The motor inside is normally 800W 12V DC.
    80W or 800W?

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    Default Re: 400w dc motor

    Quote Originally Posted by ekkekan View Post
    80W or 800W?
    Apologies. Went back and had a look and it is 80W. My bad!

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    Default Re: 400w dc motor

    Quote Originally Posted by ghouwens View Post
    Apologies. Went back and had a look and it is 80W. My bad!
    Yes, but isn't is geared.
    Cheers

    ZS5KAD
    3 V8's
    NA TwinTurbo SuperCharger
    A V6 and an inline 4

    The frogs are starting to notice that the water is getting warm but it is already too hot to do anything about it.....

  17. #17
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    Default Re: 400w dc motor

    Quote Originally Posted by Fluffy View Post
    Yes, but isn't is geared.
    As a gate motor, yes.

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    Default Re: 400w dc motor

    18V Cordless drill ?
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    Default Re: 400w dc motor

    For such a device wouldn't you rather look at torque requirement instead of the wattage?
    and is it even physically possible without gearing to get 500RPM out of a normal motor.

    If 110V/220V AC and the weight is a problem for you where would you find a power source that can provide 400Watts ?


    Once you know the amount of torque it will be easier to find a solution. I think you should be able to find a stepper that can do what you need.
    Last edited by SBSP; 2020/03/30 at 08:47 PM.

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