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
