In article ,
"DoN. Nichols" wrote:

On 2011-07-05, Gunner Asch wrote:
On Mon, 04 Jul 2011 21:58:24 -0700, Gunner Asch
wrote:

On 5 Jul 2011 04:13:13 GMT, "DoN. Nichols"
wrote:

[ ... ]

Let me know when you hit a MT 4.5 center.


SW

Got some dimensions? Live center or "solid"?

Well ... for me, solid.

From _Machinery's Handbook_:

Taper: 0.62400"/foot
Diam @ Gauge line: 1.50000"

It is only in the ANSI tapers -- table 5 in my 25th edition. Page 910.

That table has a mix of B&S tapers for the smallest three, Morse
tapers 1 though 7, with 4-1/2 added in the middle, because it is a good
fit for a lathe spindle which takes 5C collets with a nosepiece. And
then finally, some unnamed taper from #200 through #1200 with
0.750"/Foot taper.

I've made adaptors for MT-2 and MT-3 to fit that spindle, but
having a real soft center to be trued up right in the spindle should
give me an even better center for when I do work between centers.

Enjoy,
DoN.

Saved and Ill check in my Stuff and with my buds. Im going to LA in the
morning and will be gone most of the week.

Gunner

No 4.5s. Ive got a number of 4s..and a few 5s..but nothing in between.

Ill check this week

Thanks! Likely to not be found, because even Clausing shipped
the lathe with an adaptor down to some standard smaller taper. They
used MT 4.5 because it was a good fit for a spindle for 5C collets.
MT-4 is too small, MT-5 is too large (need bigger bearings and more meat
in the nose adaptor -- and bigger chuck backplates. This one had to fit
in a L-00 nosepiece.

Clausing 5900 series lathes came with a MT 4.5 to MT4 adapter, a heavy
tapered ring, and people parting 5900 lathes out may have these adapter
rings for sale.

Joe Gwinn