Need Help! Stepper Motors


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Thread: Stepper Motors

  1. #1
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    Default Stepper Motors

    I am either going blind or have totally overlooked it because I cannot find in the Building the KRMx01 book what type, size, etc. the stepper motors are.

    Any help? Any one?

    Thanks

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  2. #2
    Member handlewanker's Avatar
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    Default Re: Stepper Motors

    Hi, go browse EBAY.....most of the stepper motor suppliers also have a chart showing the dimensions of their stepper products.
    Ian.



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    Default Re: Stepper Motors

    Seriously? You present the same problem I find in the book. I can browse "Ebay" all day long, but that doesn't help when I don't know what to get. I could get a 76oz motor, 40oz motor, dual shaft, Nema 17, Nema 23, etc. etc.

    I need to know what was used to build the KRMx01 so I keep things the same and RIGHT. Why would you even tell me to go to ebay and not tell me the stepper motor I need for the KRMx01 CNC?

    Somebody with the knowledge of what I need please help......

    Last edited by WV_Kokamo_Joe; 02-22-2015 at 03:13 PM. Reason: Added needed info


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    Member handlewanker's Avatar
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    Default Re: Stepper Motors

    Sorry I poked my nose in........your problem is not my problem.



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    Default Re: Stepper Motors

    4-Axis DIY Nema 23 Electronics Kit | CNCRouterParts

    This is the electronics kit used for that machine.

    Ben



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    Default Re: Stepper Motors

    Thank you very much! Now, one other question... I bought the 1/2-10 Five start Acme screws and clamps. These are 1/2" diameter. The stepper motors in the kit will have 3/8" shafts. I believe either I'll have to sleeve the stepper motor shafts? Or have someone with a metal lathe cut the end diameter down on the screws?

    Can you confirm what is the best route?

    Thanks



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    Default Re: Stepper Motors

    The instructions call for the 380 oz 1/4" shaft motors. You also need the 1/2" to 1/4" couplers to attach the motors to the lead screws.

    Dave



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    Default Re: Stepper Motors

    Do you by chance have a part number for the couplers and a place to acquire them?

    Thanks!



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    Default Re: Stepper Motors

    Nevermind on the couplers, I found them where I got the motor kit. Thanks!



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    Default Re: Stepper Motors

    You can get them from cncrouterparts.com. Here is the link:
    Oldham Zero Backlash Couplers | CNCRouterParts



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    Default Re: Stepper Motors

    If you are using the anti-backlash nuts from cncrouterparts, you will need to modify your build slightly because they are not a direct replacement for the original nut. You can see what I done to correct it plus some drawings and other info by visiting this link.

    Additionally, here is a photo showing the mod.

    Stepper Motors-krmx01_build_ch5_015-jpg



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    Default Re: Stepper Motors

    Sorry Michael. I didn't realize you already posted this information.

    Joe



  13. #13

    Default Re: Stepper Motors

    No problem, the more its posted the easier it can be found.

    Author of: The CNC Construction Set Books, the KRMx01, KRMx02, KRmc01, and KRmf70 CNC Books, the HANS Electric gear clock book. All available at www.kronosrobotics.com.


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