Over limit stuck ball screw

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Thread: Over limit stuck ball screw

  1. #1
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    Default Over limit stuck ball screw

    I was trying to get the servo's working on my Excello mill and managed to get the z axis stuck all the way down. Normally I can connect a 12v battery charger and move the axis but it wont' work now (and I don't have the axis working properly yet under control..) Any ideas on what it takes to free it? Over limit stuck ball screw-img_20170315_120256-jpg

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  2. #2
    Community Moderator Jim Dawson's Avatar
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    Default Re: Over limit stuck ball screw

    I normally use a wrench on the bottom or top of the ball screw, on the tensioning nut. If is is stuck so tight that the wrench won't work, then you may have to loosen the attaching bolts on anything you can get to. Tapping the nut with a hammer while you are turning may help. As an absolute last resort, vice grips or channel locks applied to the unused part of the threads at the very top may work, as I said, absolute last resort.



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    Default Re: Over limit stuck ball screw

    I ended up taking the lower cover off of the ball screw and then manually turned it until it came loose. It's working now. Thanks!



  4. #4
    Community Moderator Jim Dawson's Avatar
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    Default Re: Over limit stuck ball screw

    Happy the hear you got it loose without damage.



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Over limit stuck ball screw

Over limit stuck ball screw