On Thursday 16 November 2017 12:45:11 andy pugh wrote: > On 16 November 2017 at 16:58, Gene Heskett <[email protected]> wrote: > > Best I've been able > > to do is draw the bolt down, and injecting air at 100 psi or so into > > the seat to unlock it enough that a 225 oz motor can turn it. That > > of course drives the grease out of the central bearing too. Gotta be > > a better way. > > Airtight cap over the bearing in question?
With a bolt thru the center as a leak, its gonna leak anyway. So grease it occasionally, and cleanup the mess. > For an A or B axis there are some very nice harmonic drives with > built-in servo but they are not flat enough or a C axis: > > http://bodgesoc.blogspot.de/2017/05/harmonic.html > > Nor are they even slightly inexpensive. One or 2 may have been considered, but then one wonders how much of its fatigue life has been used up. And low profile is not normally advertised. :( So figuratively speaking I am that beggar, waiting for a free horse named wish to ride. ;-) > > https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2380057.m570.l1313. >TR2.TRC0.A0.H0.XFHA-25.TRS0&_nkw=FHA-25&_sacat=0 Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
