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10mm Leadscrew in C-Beam Build

Discussion in 'CNC Mills/Routers' started by Chillimonster, Jan 19, 2018.

  1. Chillimonster

    Chillimonster Veteran
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    Still deciding which way to go for my C Beam Build (Workbee / Sphinx).

    Either will be 1000x1000 so the same question applies to both.

    Is there enough room within the C-Beam for a 10mm leadscrew in place of the 8mm. I can source the suitable bearings but would have to source the AB Nut to suit, but worst case is that I make my own.

    Has anyone got any experience of this?

    Chris
     
  2. Kevon Ritter

    Kevon Ritter Veteran
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    I've read that even a 1/2" can fit, so the 10mm wouldn't be an issue.
     
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  3. Chillimonster

    Chillimonster Veteran
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    Excellent.

    Thanks for the confirmation.
     
  4. Rick 2.0

    Rick 2.0 OpenBuilds Team
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    The issue isn't the size of the screw but getting the threaded nut to fit within the limited space available. From the center of the screw you have 12.4mm to the back of the channel and 9.1mm to the face of the plate. You need to verify the nut will work with these dimensions.

    Unless you have the capability to turn down the ends of the screw you'll also want to move up to a 10x16x5 bearing.
     
  5. Chillimonster

    Chillimonster Veteran
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    Good point.

    So maybe more trouble than it’s worth then?
     
  6. Rick 2.0

    Rick 2.0 OpenBuilds Team
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    Depends on why you are doing it.
     
  7. Chillimonster

    Chillimonster Veteran
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    Planning on a 1000 x 1000mm machine which is on the limit for 8mm leadscrews so trying to cover potential issues before they arise.
     
  8. Rick 2.0

    Rick 2.0 OpenBuilds Team
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    Do you have links to the screws and nut blocks you are considering?
     
  9. Chillimonster

    Chillimonster Veteran
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    Not done a whole lot of research ..... yet, but will link to what i have found when im back in the office on monday :)
     
  10. Giarc

    Giarc Master
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    You could get yourself a block of delrin and make your own antibacklash nuts. I did this for 1/2 inch lead screws and it works great.
     
  11. Kevon Ritter

    Kevon Ritter Veteran
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    This is what I found when creating my list. Of course, $$$ can get anything done, but I think this would be what everyone else would find.

    10mm can be had in up to 12mm lead. I only found the 12mm with up to 8mm lead for AB nuts. The issue is that you can't get a block style AB nut. I've only been able to find this cylindrical AB nut.
    [​IMG]


    Here is an example of the 1/2" nut without backlash compensation. The same applies to the 3/8" screw.
    [​IMG]


    I did see these as well, but I'm not sure what the lead is.
    [​IMG]

    So you would have to end up making your own, as was mentioned above.
    Sorry for the giant pics.
     
  12. Chillimonster

    Chillimonster Veteran
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    Looking at this a little further i found these (I was actually pricing up for the upcoming sphinx build and these popped up in some search results by pure luck)


    ANTI-BACKLASH DELRIN NUT (standard) FOR CNC 10 mm M10 LEAD SCREW - 3 pieces | eBay

    It looks like its a 1.5mm pitch so may be a little slow compared to the 2mm pitch of the 8mm although not entirely sure how much of a differce it will make in the real world
     
  13. Gary Caruso

    Gary Caruso OpenBuilds Team
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    Good find!
    The pitch won't change the speed, it's all about the lead.. 10mm per turn is 10mm per turn no matter the pitch :)

    Actually these look like single start 1.5mm leads way too slow! if they were 5 start 1.5mm pitch 10mm lead then you would be golden, the way they wrote M10 lead screw makes it a bit mis-"leading" pun intended
     
    #13 Gary Caruso, Jan 22, 2018
    Last edited: Jan 22, 2018
    GrayUK, Giarc and Chillimonster like this.

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