Bearings: ABEC 3 vs 5 vs 7 vs 9 – does it matter?

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This topic contains 4 replies, has 5 voices, and was last updated by  Edward 1 year, 2 months ago.

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  • #67723

    Fred Walter
    Participant

    I’m building two MPCNCs – one to use as a wood router, and one to attempt to use as a ceramic 3D printer.

    I’ve got one build mostly done – once I have my stepper motor situation sorted out I will start hooking up the electronics and calibrating it using a pen mounted in place of the router.

    I’ve started printing the second MPCNC. I originally ordered only enough of the recommended bearings (which are ABEC 5) for one MPCNC. I’ve ordered more, but it will take them another 3-4 weeks before they get here from China, and I’m feeling impatient. I found a bunch of ABEC 3 bearings that have been sitting in one of my junk drawers for a long time (possibly since the late 1990s!) As far as I can tell, they look and spin the same as the recommended ABEC 5 bearings.

    So… ABEC 3 vs 5 (vs 7 vs 9) – does it matter? Will the lower precision and efficiency of the 3s vs the 5s be noticeable once I start routing or 3d printing? (I figure, probably not, but the perfectionist in me says that it doesn’t hurt to ask.)

    #67734

    Barry
    Participant

    Don’t think it will matter.

    #67735

    Ryan
    Keymaster

    Agreed, don’t worry about it. We don’t really use them in that way.

    #67795

    Dui, ni shuo de dui
    Participant

    It does matter in terms of price.

    So go for the ABEC 3.

    #68377

    Edward
    Participant

    I for one cant wait to see more about the ceramic printer. Please keep us updated.

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