Re: Help w/ Sheldon Lathe

Gary,

Instead of taking the spindle out, replace the belts with link-type v-
belts. These belts are made up of links which snap together to
create any length belt. Link-type belts are better than conventional
belts.

I'm looking at my Grainger catalog, they're PowerTwist brand. Not
cheap, but much easier than removing your spindle. Maybe some one on
the list knows of a retail source if you don't access to Grainger.
Where ever you buy, be sure to get the correct size (cross section).
They come in A(4L), B(5L) and C size, match to your broken belt.

Unless you have some experience with spindle bearings, I recommend
not fooling with them. You can get into a real can of worms, besides
those bearings may not be standard off the shelf variety. And
Sheldon is long ago out of business (another company took over their
parts, you might find their price on bearings would be more than the
lathe is worth).

good luck,

Doug

--- In CAD_CAM_EDM_DRO@y..., "Gary Mazzaferro" <garym@o...> wrote:
> Hi,
>
> I've been lurking on this group for about a year now and have been
very
> impressed with everyone's knowledge on cnc conversions and
retrofits. Just
> wanted to say that first....
>
> I have a problem, that I was hoping someone could help me out with
before I
> mess up something.
>
> The drive belts broke on my late model Sheldon 11" lathe w/ backing
gears
> and "no manuals". I don't know how to remove the spindle to get the
new
> belts on. So far, I've removed everything I could. The spindle
appears to be
> in 2 parts: a big spindle (2.75") and a smaller spindle (1.25").
The large
> spindle is where the chuck screws on and a large backing gear
lives. The
> smaller spindle has the drive pulleys/backing drive gear assembly
which free
> wheels on it, as well as the gears that drive the gearbox. The
smaller
> spindle is somehow inserted into the larger one. I have to remove
the
> smaller spindle to remove the drive pulley assembly to replace the
belts.
> I'm not sure if the spindles are screwed or pressed together or the
> procedure to separate and reassemble them.
>
> Now that I have this apart, I was also going to replace the
bearings. The
> large spindle is seems to have a collar in front of the bearing. I
can't
> tell if this collar is screwed or pressed on or how to remove it to
replace
> the bearing.
>
> Any help would be appreciated.
>
> cheers,
>
> gary mazzaferro
>
>
> [Non-text portions of this message have been removed]