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Thread: China Spindle Cooling

  1. #25
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    Default Re: China Spindle Cooling

    Could of had a new correct fan blade made for that motor shipped in from China by now. Put on a muffin fan and use until the correct one comes in. When the machine is running your shop vac or dust collector will make more noise than your spindle motor.

    Retired Master Electrician, HVAC/R Commercial. FLA Saturn 2 4x4 CNC Router


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    Default Re: China Spindle Cooling

    Quote Originally Posted by Eldon_Joh View Post
    or use the 24v fan but epoxy a finned heat-sink onto the side of the motor.


    or drill larger holes in the motor case to get more airflow through the motor, or 3-d print a better shroud to suck air through the motor.


    i'm not so sure 60C outer case temperatures are such a bad thing. how much air is flowing through the motor vs flowing around it cooling the case?
    I have been looking for curved heat sinks, but have not found any. The Motor case only has a single hole with a diameter of approximately a centimeter on the top. There is no outlet on the bottom. I am not certain That the hole even has much purpose... I suppose adding an outlet to the bottom could improve the cooling.I suppose I could funnel the air into the inlet directly?



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    Default Re: China Spindle Cooling

    Quote Originally Posted by wmgeorge View Post
    Could of had a new correct fan blade made for that motor shipped in from China by now. Put on a muffin fan and use until the correct one comes in. When the machine is running your shop vac or dust collector will make more noise than your spindle motor.
    As I only use it for Circuit boards I don't have a vacuum running. Shipping from china takes about 30 days, I already ordered a replacement but It will still take at least 25 days, and then once it arrives, there is no guarantee that it will be better.



  4. #28
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    Default Re: China Spindle Cooling

    Quote Originally Posted by Lilithet View Post
    I have been looking for curved heat sinks, but have not found any. The Motor case only has a single hole with a diameter of approximately a centimeter on the top. There is no outlet on the bottom. I am not certain That the hole even has much purpose... I suppose adding an outlet to the bottom could improve the cooling.I suppose I could funnel the air into the inlet directly?
    Sure the air needs a way to get out so it can flow thru the windings. My spindle has a hole in the bottom so it blows air out around the collet. Mine is not a DC one but standard 3 phase one from China. Anyway motors need air flow, not just air pushed in.

    Retired Master Electrician, HVAC/R Commercial. FLA Saturn 2 4x4 CNC Router


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    Default Re: China Spindle Cooling

    Quote Originally Posted by Lilithet View Post
    I have been looking for curved heat sinks, but have not found any. The Motor case only has a single hole with a diameter of approximately a centimeter on the top. There is no outlet on the bottom. I am not certain That the hole even has much purpose... I suppose adding an outlet to the bottom could improve the cooling.I suppose I could funnel the air into the inlet directly?
    These motors the air cooling flows around down the outside nothing goes inside the motor, depends which motor you have same have added holes in the front bearing plate some do not some are Brushed some are Brushless

    Mactec54


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    Default Re: China Spindle Cooling

    Quote Originally Posted by mactec54 View Post
    These motors the air cooling flows around down the outside nothing goes inside the motor, depends which motor you have same have added holes in the front bearing plate some do not some are Brushed some are Brushless
    Would it be effective to cool the interior? Or is the motor design made so exterior is the only way?



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    Default Re: China Spindle Cooling

    Quote Originally Posted by Lilithet View Post
    Would it be effective to cool the interior? Or is the motor design made so exterior is the only way?
    It would depend if there is any room inside for the air to pass through, how many wire come out of the motor to the control

    Mactec54


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    Default Re: China Spindle Cooling

    If you are using the machine for pcb manufacturing, you could
    also go with a 'real' spindle with much higher rpm and probably
    a lot better specs which you would need for those tiny bits
    anyway instead of trying to fit a square peg into a round hole.

    Here is a water cooled one:

    https://www.ebay.com/itm/800W-1HP-CN...wAAOSwme1bu4IN



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    Default Re: China Spindle Cooling

    Quote Originally Posted by Lilithet View Post
    Would it be effective to cool the interior? Or is the motor design made so exterior is the only way?
    you have a dc brushed motor, so yes pulling air through the air gap between the rotor and the magnets is going to be 10 times more effective than simply cooling the outer casing of the motor.



  10. #34
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    Default Re: China Spindle Cooling

    Quote Originally Posted by mactec54 View Post
    It would depend if there is any room inside for the air to pass through, how many wire come out of the motor to the control
    Only two. Its a basic DC motor...



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