"john morris" wrote in message
...
I have just aquired a jet model 1024 lathe and don't have all the tools.
What I need is the dead center that goes into the headstock when turning
between centers. The manual says the taper in the spindle nose bushing is
a
no 4 morse taper, but the taper of the spindle center is a #2 morse taper.
I am a little confused. Measuring the spindle bore it seems like it is
the
no 4, but what do they mean by spindle center? While I am at it, where
can
I get the #4 taper? they don't come very cheep from what I see and since
it
is used with the face plate can I just turn one down and not have it
hardened? I am new to machining with the lathe so excuse me if these are
dumb questions. Thanks for any help in advance.



The large taper in headstocks is provided so you can pass the largest
possible material through the spindle. Typically, a tapered adapter comes
with the lathe, reducing the taper to the same size as the one in the
tailstock.

Yeah, you can make one from soft steel, but it won't retain its precision
very long. Each time you bump it out of the headstock you'll be inclined to
mush it a little, and if you don't do a good job of matching the taper
intimately, your center will be inclined to move about under the pressure of
the cut. Assuming you can match the taper well by bluing, that may not be
an issue. However, I don't recommend a soft adapter unless you don't
expect to use it very much.

What you can do instead of using a faceplate is chuck a short piece of stock
that has a shoulder so it can't move in the chuck. Grip the piece with the
shoulder tight against the end of the jaws, then turn a 60 degree point on
the piece. Use the chuck jaws to drive the dog and you're set to go. It
saves you changing from the chuck to the face plate, which would be an
offset for the time you take turning the point. That the point is soft
makes little difference in this instance because it turns with the spindle,
so all it's doing is locating and restraining your part. It need not be
hard, in other words. Should you choose this route, save the center for
future use. A quick pass on the angle each time you've chucked it and it's
ready to go, dead concentric.

Harold

I have just aquired a jet model 1024 lathe and don't have all the tools.
What I need is the dead center that goes into the headstock when turning
between centers. The manual says the taper in the spindle nose bushing is a
no 4 morse taper, but the taper of the spindle center is a #2 morse taper.
I am a little confused. Measuring the spindle bore it seems like it is the
no 4, but what do they mean by spindle center? While I am at it, where can
I get the #4 taper? they don't come very cheep from what I see and since it
is used with the face plate can I just turn one down and not have it
hardened? I am new to machining with the lathe so excuse me if these are
dumb questions. Thanks for any help in advance.

Another thing you want to watch on this is the # 4 may well be a
special short taper. I bought a used Jet and it was. I used a boring
bar to move the end of the taper on out to the spindle hole. before
that a #4 wouldn't seat properly. The manuals at the time even stated
the spindle taper wass shorter than normal. I have no idea why the
quit the taper bore before it intersected the spindle bore but they
did on mine. MT4 centers aren't very scarce or expensive. Try Grand
tool for centers and adapters to MT3 and MT2.
Garry


On Tue, 13 Dec 2005 17:44:54 -0800, "john morris"
wrote:

I have just aquired a jet model 1024 lathe and don't have all the tools.
What I need is the dead center that goes into the headstock when turning
between centers. The manual says the taper in the spindle nose bushing is a
no 4 morse taper, but the taper of the spindle center is a #2 morse taper.
I am a little confused. Measuring the spindle bore it seems like it is the
no 4, but what do they mean by spindle center? While I am at it, where can
I get the #4 taper? they don't come very cheep from what I see and since it
is used with the face plate can I just turn one down and not have it
hardened? I am new to machining with the lathe so excuse me if these are
dumb questions. Thanks for any help in advance.

My used Enco 1024 came with a short MT3/MT4 taper adapter, and a MT3
dead center. I haven't looked at the bore, but I bet it's like yours.

Rex B

Garry wrote:
Another thing you want to watch on this is the # 4 may well be a
special short taper. I bought a used Jet and it was. I used a boring
bar to move the end of the taper on out to the spindle hole. before
that a #4 wouldn't seat properly. The manuals at the time even stated
the spindle taper wass shorter than normal. I have no idea why the
quit the taper bore before it intersected the spindle bore but they
did on mine. MT4 centers aren't very scarce or expensive. Try Grand
tool for centers and adapters to MT3 and MT2.
Garry


On Tue, 13 Dec 2005 17:44:54 -0800, "john morris"
wrote:


I have just aquired a jet model 1024 lathe and don't have all the tools.
What I need is the dead center that goes into the headstock when turning
between centers. The manual says the taper in the spindle nose bushing is a
no 4 morse taper, but the taper of the spindle center is a #2 morse taper.
I am a little confused. Measuring the spindle bore it seems like it is the
no 4, but what do they mean by spindle center? While I am at it, where can
I get the #4 taper? they don't come very cheep from what I see and since it
is used with the face plate can I just turn one down and not have it
hardened? I am new to machining with the lathe so excuse me if these are
dumb questions. Thanks for any help in advance.

john morris wrote:

... jet model 1024 lathe ... need is the dead center ...

There have been replies about MT adapters, but that doesn't help unless
you already have more than 1 MT2 center. I have the Jet 1024 and I
bought an MT4 center from Enco for $4.75. The bottom-of-the-line, but
it's hardened carbon steel and I use the chuck mostly, anyhow.

Full-length is fine on mine, it does not bottom out.

but the taper of the spindle center is a #2 morse taper. ...

The headstock is MT4 and the tail stock MT2.

HTH,
Bob

My Sheldon Lathe a 11x44 is a Morse taper #4 - long normal.

Grand is a good company to work with - or was when I was buying stuff from them.
They seem to have tons of taper stuff. Nice metric drills by .1mm and all sorts
of goodies.

Martin
Martin Eastburn
@ home at Lions' Lair with our computer lionslair at consolidated dot net
NRA LOH, NRA Life
NRA Second Amendment Task Force Charter Founder



Garry wrote:
Another thing you want to watch on this is the # 4 may well be a
special short taper. I bought a used Jet and it was. I used a boring
bar to move the end of the taper on out to the spindle hole. before
that a #4 wouldn't seat properly. The manuals at the time even stated
the spindle taper wass shorter than normal. I have no idea why the
quit the taper bore before it intersected the spindle bore but they
did on mine. MT4 centers aren't very scarce or expensive. Try Grand
tool for centers and adapters to MT3 and MT2.
Garry


On Tue, 13 Dec 2005 17:44:54 -0800, "john morris"
wrote:


I have just aquired a jet model 1024 lathe and don't have all the tools.
What I need is the dead center that goes into the headstock when turning
between centers. The manual says the taper in the spindle nose bushing is a
no 4 morse taper, but the taper of the spindle center is a #2 morse taper.
I am a little confused. Measuring the spindle bore it seems like it is the
no 4, but what do they mean by spindle center? While I am at it, where can
I get the #4 taper? they don't come very cheep from what I see and since it
is used with the face plate can I just turn one down and not have it
hardened? I am new to machining with the lathe so excuse me if these are
dumb questions. Thanks for any help in advance.




----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups
----= East and West-Coast Server Farms - Total Privacy via Encryption =----

"john morris" wrote in message
...
Thanks for the info and help everyone, as well as some good resources for
tools