Bearings; 2rs or zz – any difference?

New Home Forum Mostly Printed CNC – MPCNC Advice – MPCNC Bearings; 2rs or zz – any difference?

This topic contains 3 replies, has 3 voices, and was last updated by  Derek P 2 months, 1 week ago.

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  • #49633

    RockSolid
    Participant

    Hi,

    Bearings, 608 2-RS Bearings – 2RS is as I understand it, just like ZZ, but where ZZ has metal bands, the 2RS has rubber bands. Looking through the assembly, I can’t see why the components should be 2RS over, say ZZ.

    Has this something to do with how well the screws fit ?

    If there are no difference, it could be advisable to change the BoM list 🙂

    #49634

    Ryan
    Keymaster

    RS=Rubber shielded on top of the regular ZZ, meaning it keeps the dirt out better. Keeping the BOM.

    #49638

    RockSolid
    Participant

    Cool, didn’t know – but that means, besides keeping dirt out, there is not functional difference? The design as such doesn’t rely on 2rS ? (I mainly ask bc I already have a few dozen ZZs in stock, from a failed 3dprinter attempt..)

    #49647

    Derek P
    Participant

    I used zz bearings in my first build. It works fine but I’m going to to use 2RS in the next one.

     

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