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Thread: How much runout is normal?

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  1. 11-28-2014, 01:50 PM #1
    the_ball
    the_ball is offline Registered
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    Thumbs up How much runout is normal?

    Hi there,

    I removed the D1-4" CamLock chuck from my typical chinese import lathe today and measured the runout on the taper nose and the mating plate. I measured about 0.01mm on both. Is this normal or is there something I can do to improve it?

    Here's the measurement: https://www.youtube.com/watch?v=d02_FN2AsXM


    Cheers,
    Alex
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  2. 12-07-2014, 10:53 AM #2
    the_ball
    the_ball is offline Registered
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    Re: How much runout is normal?

    Hi guys,

    I've tightened the preload on the main bearings as per this picture:

    Attachment 259810

    The runout on the plate is now almost not measurable, however the runout on the taper nose is unchanged. See video:

    https://www.youtube.com/watch?v=Qiy7uboBSg0

    Any ideas where to from here?
    Do it by the book.. but be the author!
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