Well, I'm having one of those nice reverse-midas days when everything I
touch turns to dog doo.
Plan D was to finish milling out some dihedral braces for an
almost-ready-to-fly kit that I'm building. After setting everything up
and turning on the switch I find that the spindle on my Smithy 3-in-1
machine's milling head won't turn.
The spindle rides in tapered bearings in the quill, which are adjusted
by a round nut. The sheet metal retainer for the nut either never got
bent into place to prevent the nut from turning or it bent itself out of
the way. The bearings were way too tight -- to the point where there's
some bluing of the spindle on the bottom end. The grease in the
bearings has obviously overheated and left each roller bedded in it's
own little custom-made varnish pocket.
So I have two questions:
For the short term, is there anything that'll likely dissolve this
varnish? I can scrape it off the outer races with my fingernails, but
the rollers are retained onto the inner races & I can't get to it. I'd
like to soak it off if possible, although I may just leave things fairly
loose & make my dang cut to get through today.
For the longer term, how much of a chance is there that I can get these
bearings from a local bearing house? Should I just be applying to
Smithy for new ones? If I'm going to go to the trouble of pulling those
outer races I darn well want to put in decent bearings rather than
- posted 16 years ago