Two bearings loose on the middle assembly

New Home Forum don’t use this one need to sort -Assembly – MPCNC Two bearings loose on the middle assembly

This topic contains 4 replies, has 2 voices, and was last updated by Profile photo of Rui Rui 6 months, 3 weeks ago.

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  • #13953
    Profile photo of Rui
    Rui
    Participant

    Hi, anybody as this bearings loose and any idea to adjust them? Thanks

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    #13955
    Profile photo of vicious1
    vicious1
    Keymaster

    Did you fully assemble the Z axis and make the bars parallel like the instructions?

    #13956
    Profile photo of Rui
    Rui
    Participant

    No, because, I haven’t the bottom piece(std tool mount), since was doing the multi extruder one.

    At bottom is using a copy of the lower Z mount for testing. But, what is strange, is that is the same hole, since the pieces are installed mirrored. Its ABS and the outmost Z bearings flex a little when inserting the Z assembly.

    But is solid as a rock. I could say ABS is usable for MPCNC but tricky to print and smells bad… lots of acetone slurry 😀

    It’s a lovely toy U gave us Vicious!

    #13958
    Profile photo of vicious1
    vicious1
    Keymaster

    Thanks for the compliments.

    I wouldn’t worry to much about the bearing thing until you get all the pieces. Then go step by step following the instructions and you should be okay. The center is a tricky piece and needs to get assembled in the right order.

    The z bearings should and will flex. They have to move. Each part has a bearing group that moves to compensate for alignment and conduit surface finish.

    ABS is tricky and can shrink in a bad way…

    #13962
    Profile photo of Rui
    Rui
    Participant

    Each part has a bearing group that moves to compensate for alignment and conduit surface finish.

    Wow! That’s important stuff. Thank you.

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