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  1. #21
    Thanks guys.

    This is great. I understand it now. Basically, I am adjusting the ballscrew tighter by the tab nut and tab washer!

    Click image for larger version. 

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  2. #22
    i2i's Avatar
    Lives in Cardiff, United Kingdom. Last Activity: 23-12-2016 Has been a member for 7-8 years. Has a total post count of 693. Received thanks 30 times, giving thanks to others 0 times.
    Not really, you're adjusting the preload on the pair of angular contact bearings in the green block that fixes the ball screw to the table.

  3. #23
    Quote Originally Posted by i2i View Post
    Not really, you're adjusting the preload on the pair of angular contact bearings in the green block that fixes the ball screw to the table.
    ...the blue ones in the illustration below. I was trying to figure that out.

    Click image for larger version. 

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  4. #24
    i2i's Avatar
    Lives in Cardiff, United Kingdom. Last Activity: 23-12-2016 Has been a member for 7-8 years. Has a total post count of 693. Received thanks 30 times, giving thanks to others 0 times.
    the drawing doesn't really represent the action, but that's where it is.

  5. #25
    You cannot adjust the ball screw bearings, they are what they are.

    When you have an angular contact bearing in your hand the middle wobbles back and forth.

    So what your almost doing when you have a pair is pulling the middles together to get rid of that play.

  6. #26
    Quote Originally Posted by stallone View Post
    ...the blue ones in the illustration below. I was trying to figure that out.

    Click image for larger version. 

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    This drawing is not correct as it is not showing the inner part of the AC bearing
    ..Clive
    The more you know, The better you know, How little you know

  7. #27
    The spacer should be on the inside race so it shows the lock nut squeezing the outer races together....if that's how its assembled? I thought they normally had the lock nut on the inner race with the ballscrew also on the inner race and the outer races locked in position?
    Last edited by njhussey; 08-12-2015 at 10:21 AM.
    Neil...

    Build log...here

  8. #28
    The tab nut tightens the inner race of the bearings not the outter

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