Hello Andy, Thank you for this additional information.
*Can someone** tell me if this nut **is adjustable ???* Some pictures of the problem: To have no more weight on the screw, the head of the machine is placed on its transport support https://drive.google.com/open?id=0B5hmBjm5ot8NOS1CdldvSi1MbzQ https://drive.google.com/open?id=0B5hmBjm5ot8NS0Q5VDBvY3pGVjA https://drive.google.com/open?id=0B5hmBjm5ot8NSDhCTmpsWkk3aVU Best regards, Pierre 2016-02-26 10:32 GMT+01:00 andy pugh <bodge...@gmail.com>: > On 26 February 2016 at 06:02, Forum Deswysen <forum.deswy...@gmail.com> > wrote: > > Yes that's it. > > Don't ignore the possibility that the backlash/ slack might be in the > ballscrew bearings. > > Depending on the style of the ball-nut, it might be possible to adjust > the backlash. > > Isel make adjustable ball-nuts: > http://www.techno-isel.com/lmc/Products/BmNuts.htm > If you have them, then you just need to adjust them. > > Often the ball-nuts are a back-to-back pair with a spacer to set the > backlash/preload. If yours is like this, perhaps the clamping screws > have loosened. > If the screws are still tight then you might be able to grind / lap > the spacer to remove the backlash. > > If the ballnut/screw is a single piece then the options are > replacement or rebuilding with oversized balls. If the slack varies > with position the then wear is uneven, and oversized balls won't work. > This Amazon seller lists balls in very small increments around the nominal > size > > http://www.amazon.com/Ballscrew-Screw-Balls-0-1244-mm3-1597/dp/B0070I6824/ref=sr_1_19?ie=UTF8&qid=1456479041&sr=8-19&keywords=precision+balls+ballscrew > There are videos on Youtube showing how to re-ball a ballnut. > > -- > atp > If you can't fix it, you don't own it. > http://www.ifixit.com/Manifesto > > > ------------------------------------------------------------------------------ > Site24x7 APM Insight: Get Deep Visibility into Application Performance > APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month > Monitor end-to-end web transactions and take corrective actions now > Troubleshoot faster and improve end-user experience. Signup Now! > http://pubads.g.doubleclick.net/gampad/clk?id=272487151&iu=/4140 > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ Site24x7 APM Insight: Get Deep Visibility into Application Performance APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month Monitor end-to-end web transactions and take corrective actions now Troubleshoot faster and improve end-user experience. Signup Now! http://pubads.g.doubleclick.net/gampad/clk?id=272487151&iu=/4140 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
