Looking for a shaper ball-bearing rub collar OD 1-7/8", bore 3/4", and (the
hard part) height 1/4". Looked in all my catalogs at home, and DAGS... why is
it that *none* of the vendors selling rub collars mention the height? I have
to pick up the phone and call _every_single_one_ ... and can't find anybody
with 1/4" height collars.
Grizzly -- 5/16.
Rockler, Woodline, MLCS -- 7/16.
Woodcraft -- dunno; we'll call you back. [still waiting]
Anybody know a vendor selling 1/4" height ball bearing rub collars?
Doug Miller (alphageek at milmac dot com)
No, but I'd go to the local industrial bearing supply or search the
online bearing suppliers. For that thin you may well have to find a
bearing and get the outer diameter by pressing on an outer spacer.
You can also look here at Freud's selections
or look at Amana.
I think, however, it will be hard to find any bearing of 3/4" bore that
is only 1/4" thick.
As for the question of why they don't show thickness on ball bearing
collars, it's because most are intended for above or below pattern
following, not between which is about the only place where the actual
thickness would matter...
I ken, but 1/4" thickness w/ 3/4" bore is pretty flimsy bearing
remembering there has to be room in the total thickness for at least
two-sided seals for the purpose even if they aren't fully sealed. I've
not tried the search but local bearing supply is probably best bet.
Actually, if you note the request (as opposed to the article title)
you'll see he wants a ball bearing to serve, not just a simple rub
Not many machinists are going to want to make a ball bearing from
scratch and you're not going to want to pay for it if they do... :)
Actually, it's <1/4" so could be shimmed....
It is, however, a specialty instrumentation bearing which is pretty
light duty rated and I suspect probably pretty pricey (although as noted
in another post my old IE crashed on the attempt to price it).
Actually, it just dawned on me the thickness given is 0.1562" -->
5/32"! This thing is <really> a miniature. You could stack three of
'em! Not a bearing for the purpose, methinks....
Doug, based on what I've seen so far, I'd suggest following the link to
the previous unshielded one and contact them directly to see if they do
have a shielded version.
Also, obviously, go to your local bearing distributorship(s) and see
what they can find.
Now, I'm a machinist, and I think I'm a pretty good one and I've made a lot
of off the wall stuff over the years, but I've never seen a shop that was
set up to make bearing sets in any quantity less than a half million at a
That single bearing set, made from scratch and only one or two of them, is
gonna cost in the $2K range.
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