Hybrid stepper motor.


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  1. #1
    Member Pugman1's Avatar
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    Default Hybrid stepper motor.

    Hi, I wonder if anyone out there can help me. I need to swap out the stepper motor on my z axis. It’s a little nema 23. I would like to replace something with a little more torque. Would it be possible to use a hybrid motor just on the z axis alone. I am using a CS-Labs CSM10/IP-M motion controller and Mach3 .thanks

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    Default Re: Hybrid stepper motor.



  3. #3

    Default Re: Hybrid stepper motor.

    Hi,
    no doubt there are many high torque 23 size motors but they also have high inductance and you need to avoid them.

    All steppers lose torque the faster they go. Winding inductance is the primary measure of how bad that torque degradation will be.
    A 6mH motor might have as little as 5-10% of its rated holding torque at 1000rpm whereas a 1-1.5mH motor might have as much as 40-50%
    at 1000rpm.

    By all means find a motor with more torque but reject anything over 2mH or your new motor will start losing steps or stalling at speed.

    The classic way to overcome winding inductance is to use the highest voltage driver and power supply you can find. At the current time the
    market leaders are 80VDC capable.......you should aim for 80VDC drivers and supply.

    Craig



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    Member Pugman1's Avatar
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    Default Re: Hybrid stepper motor.

    Thanks for the reply’s



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    Default Re: Hybrid stepper motor.

    Quote Originally Posted by Pugman1 View Post
    Thanks for the reply’s
    Finding something high torque (say 425oz- 570oz) with an inductance of less than 2.5mh is pretty much impossible.
    My 570oz nema23 from the uk are 3mh (the uk has crap!). Importing the Automation tech ones would have cost too much.
    https://www.automationtechnologiesin...3h2100-50-4bm/

    To counteract my inductance I run them on 60Vdc with 80vmax drivers. They run awesome and are quiet.
    Anything above 2mh run on 60Vdc it makes a big difference but. Go no more than an inductance of 3mh.



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