1. #1
    Hi, folks. I have hot pots! After maybe towards an hour, my stepper motors overheat. They can get to 80+ degrees C! (useful to light my cigarettes from..;)
    I'm using that blasted TB6560 blue Chinese board (with NEMA 17's on a Zen 6x6 router), and was wondering if setting the DIP switches to a lower amperage might help? I'm running it at 15v, and it sucks (the board) 1.5A max on a typical cut.
    On startup, all motors run fine, with no untoward noises.
    TIA,
    Last edited by Skysurfer; 06-05-2014 at 11:20 AM. Reason: More info.

  2. #2
    Neale's Avatar
    Lives in Plymouth, United Kingdom. Last Activity: 8 Hours Ago Has been a member for 6-7 years. Has a total post count of 1,243. Received thanks 234 times, giving thanks to others 5 times.
    I worried about the steppers on my machine which probably reach that kind of temp. When I googled it a bit, the general view was that steppers do run hot, and I seem to remember figures of over 100C being normal. I don't worry if it's too hot to touch as long as it isn't hot enough to boil water (i.e. fizz when you touch it with a wet fingertip). I did turn down the max current a bit, which helped.

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  4. #3
    I have found a PRC i/r thermometer very useful for this, too - it probably only cost me a fiver from fleabay... Cheers for your response.

  5. #4
    It takes most people by surprise but
    it is normal for stepper motors run too hot to the touch

    different manufacturers give the maximum temperature as 70 to 80 C

    RS Pro High Torque Hybrid Stepper Motor Stock No: 535-0401 as an example
    Click image for larger version. 

Name:	RS Pro  H i g h   T o r q u e   H y b r i d   Stepper Motor.pdf 
Views:	18 
Size:	441.2 KB 
ID:	26106

    John

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