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  1. #1
    Join Date
    Nov 2019
    Posts
    41

    Removing play in Z axis

    What is the intended way to adjust the bearing side-to-side for the Z axis? I have a a lot of play https://sendvid.com/6cq50f94

    I tried loosing the bolts holding the bearings on to see if there way movement in their holes and I could just move them over and tighten them, but there was none. My only guess at this point is to shim out the vertical metal rails that the bearings ride in.

    I am hoping a Joe's builder can provided some insight. I am a 3rd owner of this fairly well built Joe's machine.

  2. #2
    Join Date
    Mar 2003
    Posts
    35538

    Re: Removing play in Z axis

    The bearings on one side should be on eccentric bushings that you turn to tighten.
    The angle iron isn't helping. Switching to precision rail would help, but you'll always have some play with that system.
    Gerry

    UCCNC 2017 Screenset
    http://www.thecncwoodworker.com/2017.html

    Mach3 2010 Screenset
    http://www.thecncwoodworker.com/2010.html

    JointCAM - CNC Dovetails & Box Joints
    http://www.g-forcecnc.com/jointcam.html

    (Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)

  3. #3
    Join Date
    Nov 2019
    Posts
    41

    Re: Removing play in Z axis

    Yes there were eccentric bearings on the one side. Thank you.

    Adjustment of these help resolved play as well as binding that was taking place when the Z axis moved up.

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