开云体育

I just purchased a 9" south bend lathe. Anyone have a manual for it?

Manual or parts list. I have a minor manual/parts list in PDF format
that I could put in the vault.
JWE

Great timing for this group. Last Saturday (12/16/00) I snagged an old (50s
?) 9" x 18" SB Precision Lathe Model A, SN 101025. I'm in the process of
learning about the specific vintage and how best to clean, restore and enjoy
this fine lathe. All help gratefully accepted.

I'd like to request that anybody with pointers to web sites, wisdom,
experience, etc. concerning the 9-inch SB please share them with the group.
If this group grows to even a fraction of the 7x10minilathe@...
egroup, we'll have a wonderful resource.

I've included a picture of my lathe, minus the floor-standing motor
pedestal. I'll be posting more pictures on the web as I work on this gem.
Maybe we can start off with pictures of our lathes in the file area of this
group since there's probably plenty of space right now.

Many questions coming up...

Paul R. Hvidston
Upland, CA

--- In southbendlathe@..., jwtaylor61@h... wrote:

I just purchased a 9" south bend lathe. Anyone have a manual for it?

While you look for a manual, the South Bend book "How to run a
Lathe", available from Lindsey Books for $8.00 is a very close
second. It has a lot of SB specific info on the smaller lathes.

Paul R. Hvidston
Upland, CA

I just got off the phone with SBL and I learned that my SB Precision Lathe
Model A was originally shipped Jan 13, 1941. I ordered the manual for it for
$25.00 (we'll see if its the correct one). They also said parts are
available for it, but I'll bet they aren't cheap. Anyway, the URL for SBL
parts is:



and the phone number is 800-525-2843. They are very pleasant and helpful.
Just give them a call. I'll let the group know about the manual when it
arrives ;-)

Paul R. Hvidston
Upland, CA

South Bend Lathes Home Page.


South Bend 9-inch "Workshop" Lathe


Home Page of details on all 9" Model Lathes

I started this eGroup last week and look at the great information.
Keep it coming...........

Lets see some more pictures.

Alright here is my 9" SB that has been with me off and on since 1969. The
first picture shows the lathe turning a part mounted in the 3" 3-jaw from my
7x10 with a custom aluminum backplate. The chipguard is flipped back for
this picture. 2" dial indicator depth stop above the gearbox. Phase II Enco
tool post. RF-20 mill drill to the right behind the lathe. 7x10 on the bench
to the left, bandsaw on the bench to the rear of the lathe. Second picture
same view with faceplate on to line up the milling vice for cutting a keyway
in a shaft. This time 7x10 is under the left bench.
JWE

Does anybody have a 9" SB with a similar configuration? My 1941(?)
"Precision Model A" headstock has Timken roller bearings and no back gear
(as seen from the attached photo). Nothing hangs off of the two ears on the
headstock casting. With the headstock 3-step cone-pulley along with another
4-step jack-shaft on the floor-mount pedestal I get 12 speeds. The
jack-shaft and motor were cobbled together from pillow blocks and a
non-reversing repulsion motor. I'd like to re-engineer the power train
starting with a TEFC 1 HP induction motor and possibly add a two-step pulley
setup off the motor shaft in order to get the equivalent of a back-gear.
Spindle speeds? I'd like to end up with 25-2100 RPM. I would imagine the
roller bearings could handle the high speed safely. Flat belt? has anybody
purchased a belt and cement from SBL? Others? Cost? Is it worth machining
v-belt pulleys and getting rid of all that flat belt stuff? I read/heard
that flat belt slip is a good safety factor if you should crash your cutter
into the chuck (or whatever).

BTW, surfing the SBL web site I found more history/documentation on the 9"
series at:


Paul R. Hvidston
Upland, CA

Paul
I put one of those on my machine in 1977 when the leather belt went
south. As I remember the cost then was about $50, I do not know what
it would cost now. That belt is still working fine with no problems
except the saftey slip today. Sure saves the machine on crashes. For
another option I would use the same belts from McMaster-Carr that I
am using on the Burke mill, but you will have to take the head apart
to fit it.
JWE


--- In southbendlathe@..., "Paul R. Hvidston"
<p.hvidston@i...> wrote:

Does anybody have a 9" SB with a similar configuration? My 1941(?)
"Precision Model A" headstock has Timken roller bearings and no

back gear

(as seen from the attached photo). Nothing hangs off of the two

ears on the

headstock casting. With the headstock 3-step cone-pulley along with

another

4-step jack-shaft on the floor-mount pedestal I get 12 speeds. The
jack-shaft and motor were cobbled together from pillow blocks and a
non-reversing repulsion motor. I'd like to re-engineer the power

train

starting with a TEFC 1 HP induction motor and possibly add a two-

step pulley

setup off the motor shaft in order to get the equivalent of a back-

gear.

Spindle speeds? I'd like to end up with 25-2100 RPM. I would

imagine the

roller bearings could handle the high speed safely. Flat belt? has

anybody

purchased a belt and cement from SBL? Others? Cost? Is it worth

machining

v-belt pulleys and getting rid of all that flat belt stuff? I

read/heard

that flat belt slip is a good safety factor if you should crash

your cutter

into the chuck (or whatever).

BTW, surfing the SBL web site I found more history/documentation on

the 9"

series at:


Paul R. Hvidston
Upland, CA

Never heard of a factory South Bend with anything but bronze bearings
and a back gear. I think they did away with the bronze bearings in
the last 20 years.

Yea, an that's got me kind of confused. Timken roller bearings are cool, but
where did they come from? Could I have a non-original headstock? When I
receive what is supposed to be the manual for this lathe I might learn
something. I'm thinking, though, that the parts diagram I got from James
Early might be all I get, and that DOES NOT show my HS configuration.
Strange but wonderful.

I also have yet to see any mention of "Precision" in the lathe title e.g.
mine is "South Bend Precision Lathe Model A" without"Workshop" as some of
the lower-end ones were. Also, since my serial number (101025) is in the
range of:

"The earliest records show that lathes were numbered sequentially, beginning
with 700, in July, 1910, and ending with 186,514 March, 1947" -- (from SBL
web site)

SBL must be correct in saying that my lathe was first shipped in January of
1941.

Paul R. Hvidston
Upland, CA

Paul,

I checked with a local electrical supplier and there are a number of
nice little AC frequency drive which will give you a variable speed
control with any 110/220V AC motor. It will also give you reversing
capablities and they are about $200- 300 dollars.

You can do away with all those counter shafts and jsut still with one
speed.

Here is a list of some of the Brand name drives.

Allen-Bradley
Mitsubishi
Toshiba
Sumitomo
Westinghouse
GE
Reliance
T.B. Woods
Asea Brown Boveri (ABB)
Siemens





--- In southbendlathe@..., "Paul R. Hvidston"
<p.hvidston@i...> wrote:

Does anybody have a 9" SB with a similar configuration? My 1941(?)
"Precision Model A" headstock has Timken roller bearings and no back

gear

(as seen from the attached photo). Nothing hangs off of the two ears

on the

headstock casting. With the headstock 3-step cone-pulley along with

another

4-step jack-shaft on the floor-mount pedestal I get 12 speeds. The
jack-shaft and motor were cobbled together from pillow blocks and a
non-reversing repulsion motor. I'd like to re-engineer the power

train

starting with a TEFC 1 HP induction motor and possibly add a

two-step pulley

setup off the motor shaft in order to get the equivalent of a

back-gear.

Spindle speeds? I'd like to end up with 25-2100 RPM. I would imagine

the

roller bearings could handle the high speed safely. Flat belt? has

anybody

purchased a belt and cement from SBL? Others? Cost? Is it worth

machining

v-belt pulleys and getting rid of all that flat belt stuff? I

read/heard

that flat belt slip is a good safety factor if you should crash your

cutter

into the chuck (or whatever).

BTW, surfing the SBL web site I found more history/documentation on

the 9"

series at:


Paul R. Hvidston
Upland, CA

jwtaylor,

Interesting idea, and I was considering using a 3-phase motor and vari-drive
I could get for under $100. The problems are torque and price. At lower
spindle speeds I'm not convinced that there will be enough torque to machine
large workpieces using a vari-drive. Gear reductions should provide more
torque than the flat belt can transmit w/o slip.

BTW, who is using flat belts (leather or other) on their lathe? James Early
recommended (I believe) High-Speed Rubber Belts from McMaster-Carr, page 827
for $0.26/inch pre-made. Any thoughts from anybody about that? I called SBL
and they want over $100.00 for a 3/4" x 53" belt and cement kit. Yikes!

Cheers!

Paul R. Hvidston
Upland, CA

I have been told that using a AC Drive, you will not loose any torque
at the high or low end of the scale.

I will get some detailed information on this and post it after
christmas.

Jim

--- In southbendlathe@..., "Paul R. Hvidston"
<p.hvidston@i...> wrote:

jwtaylor,

Interesting idea, and I was considering using a 3-phase motor and

vari-drive

I could get for under $100. The problems are torque and price. At

lower

spindle speeds I'm not convinced that there will be enough torque to

machine

large workpieces using a vari-drive. Gear reductions should provide

more

torque than the flat belt can transmit w/o slip.

BTW, who is using flat belts (leather or other) on their lathe?

James Early

recommended (I believe) High-Speed Rubber Belts from McMaster-Carr,

page 827

for $0.26/inch pre-made. Any thoughts from anybody about that? I

called SBL

and they want over $100.00 for a 3/4" x 53" belt and cement kit.

Yikes!

Cheers!

Paul R. Hvidston
Upland, CA

----- Original Message -----
From: <jwtaylor61@h...>
To: <southbendlathe@...>
Sent: Tuesday, December 19, 2000 3:02 PM
Subject: [southbendlathe] Re: Headstock configuration and speed

range

discussion

Paul,

I checked with a local electrical supplier and there are a number

of

nice little AC frequency drive which will give you a variable

speed

control with any 110/220V AC motor. It will also give you

reversing

capablities and they are about $200- 300 dollars.

You can do away with all those counter shafts and jsut still with

one

speed.

I'll be looking forward to it! Thanks, Jim

Paul R. Hvidston, N6MGN@...
ACKSYS Engineering
Upland, CA
p.hvidston@...

I contacted a local belting company who I deal with. They recommend
replacing the leather belts with a 4ply Transmission belt.

I had them quote on the following belt.

3/4" x 53" x 3/16" with clipper lacing (Steel lace). Price $20 CAD
($13.00 USD) plus shipping. (You can specify any length)

If you would like to have an endless belt or a belt prepared for
gluing, it is the same price. They can also provide a special glue for
this belt.

The Company Name is Associated Industrial Rubber (902)468-1202.
They are in Nova Scotia Canada. They will ship anywhere. Make sure you
ask for Angus MacDonlad.

Hope this helps.

I have attached a sketch of a Turret Tool post. If anyone has one on their
machine, could they give me the dimensions as indicated on the attachment.

I will draw one up in Cad when I finish it for all to share.

Shaft size would also help.

I have attached a sketch of a Turret Tool post. If anyone has one on their
machine, could they give me the dimensions as indicated on the attachment.

I will draw one up in Cad when I finish it for all to share.

Shaft size would also help.