Mikini Spindle Bearings Replacement


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Thread: Mikini Spindle Bearings Replacement

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    Default Mikini Spindle Bearings Replacement

    I am noticing, visuallly, a lot of spindle runout in a Mikini 1610L that is infrequently used for prototyping. I feel a small amount of play if I wriggle the bottom of the spindle in the x-y plane. My conclusion is that the spindle bearings need replacement. Can anyone help with bearing part numbers or sizes? (The user manual indicates they are P4 (ABEC-7) precision tolerance.) If I find replacement bearings, will reassembly result in the same preload? Is there a preload that must be satisfied? I am assuming that Mikini is out of business based on their lack of a website (correct me if I'm wrong).
    Thanks!
    Scott

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    Hi, Here are the bearings....

    7004 CYDUP4 Nachi High Speed Bearing ABEC 7 Japan | eBay

    7007 CYDUP4 Nachi High Speed Bearing ABEC 7 Japan | eBay

    I'm probably going to do my spindle soon...I just don't trust what Mikini may have put in there

    pete


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    Thanks very much for the info!
    Since I posted my question, I did some more digging and came up with a slightly different answer:
    7006 P4 (ABEC-7) (2 upper bearings)
    7007 P4 (ABEC-7) (2 lower bearings)
    Might be model year specific. Ours was made in 2009. My bearing info comes from
    http://www.cnczone.com/forums/bencht...int.html?pp=40
    and also a blog entry from roberto123
    CNCzone.com- The Largest Forums for CNC Professional and Hobbyist alike! - roberto123 - Blogs
    Best,
    Scott



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    Quote Originally Posted by SGTShop View Post
    Thanks very much for the info!
    Since I posted my question, I did some more digging and came up with a slightly different answer:
    7006 P4 (ABEC-7) (2 upper bearings)
    7007 P4 (ABEC-7) (2 lower bearings)
    Might be model year specific. Ours was made in 2009. My bearing info comes from
    http://www.cnczone.com/forums/bencht...int.html?pp=40
    and also a blog entry from roberto123
    CNCzone.com- The Largest Forums for CNC Professional and Hobbyist alike! - roberto123 - Blogs
    Best,
    Scott
    My apologies, your right on the bearing numbers. I also found Allen's post in his VFD and Ac motor replacement post (page 16 post #183) to verify them...

    Thanks for double checking, I would have bought the wrong bearing set..... this old age stuff sucks ...lol

    pete


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Mikini Spindle Bearings Replacement

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