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1badanimal
12-08-2016, 09:14 AM
I just purchased a South Bend Lathe and am having difficulty identifying it I have looked at 100's of pictures whats unusual is it does not have the auto feed assembly the numbers on the lathe are 9" swing 4' bed catalog # 520-A serial number 33492 I tried to attached a picture without any luck thanks for any help

smithdoor
12-08-2016, 10:10 AM
For manuals see
https://groups.yahoo.com/neo/groups/southbendmanual/info
It is easy to post on https://groups.yahoo.com/neo/groups/southbendlathe9/info

By the number looks like built in 1920's around 1926

Dave


I just purchased a South Bend Lathe and am having difficulty identifying it I have looked at 100's of pictures whats unusual is it does not have the auto feed assembly the numbers on the lathe are 9" swing 4' bed catalog # 520-A serial number 33492 I tried to attached a picture without any luck thanks for any help

Stu
12-08-2016, 11:45 AM
Try here for ID. Stu

http://www.lathes.co.uk/southbend/index.html

jmm03
12-08-2016, 11:50 AM
Welcome to the forum, both sources above are good another is the southbend forum on practicalmachinist.com Jim

kitno455
12-08-2016, 01:03 PM
The serial puts you in 1926, which would be a 9 Jr without power feeds. However, the cat number 520-A is interesting, as that would imply it is a 9" Toolmaker, which was only made in 1933-34 timeframe. Any chance the first digit of your serial is actually a 5 instead of a 3?

allan

Machine
12-08-2016, 09:47 PM
Put some pictures up. I also have a 1926 South Bend 11" x 5 lathe. It would great to see what its little brother looks like. Here's mine...
http://i289.photobucket.com/albums/ll224/my-pics-are-here/lathe/IMG_1847_zps71ni8gil.jpg
http://i289.photobucket.com/albums/ll224/my-pics-are-here/lathe/IMG_1849_zpskalyqbup.jpg

Paul Alciatore
12-08-2016, 11:18 PM
For a quick, pictorial tutorial on posting photos, go here:

http://bbs.homeshopmachinist.net/threads/62262-Posting-Photos

The first procedures in that thread are out of date. Scroll down to post #8 for the latest. It's as short and sweet as I could make it.

If by auto feed you mean the power feed for the carriage and cross slide, SB did make the 9" models without it. Here is a description of the three major variations of the SB-9:


Model A: This model is equipped with a quick change gear box, which allows quick changes in lead screw rotation rates relative to headstock rotation. The Model A apron (attached to the saddle) has a clutch fed power take off (from a slotted lead screw). The apron has a detent lever with three positions, which may be selected to either power the saddle lengthwise along the lathe, drive the cross feed assembly, or have no action at all (neutral). When in neutral, the operator can manually manipulate the cross feed and move the saddle by either engagement of the half nuts onto the lead screw or through the use of the hand wheel.

Model B: This model is equipped with the apron features of the Model A, but has no quick change gear box. Gear changes are accomplished by manually replacing selected gears from a supplied set and realigning the gear meshes.

Model C: There is no quick change gear box, gears are changed manually as in the Model B. The apron only supports half nut engagement or hand wheel drive of the saddle. There is no power cross feed drive.

As far as I know, those model numbers along with the bed length are the primary differences in the 9" SB lathes.

I have a 9C with a 24" bed but it has a lead screw with the keyway which is necessary to upgrade it to auto feed. You can get the parts necessary to upgrade it from dealers in used SB parts. You need to replace the lead screw and the apron assembly. I hope to upgrade mine some day.

There is a good SB forum on PM.

http://www.practicalmachinist.com/vb/south-bend-lathes/

There are also SB boards on Yahoo.




I just purchased a South Bend Lathe and am having difficulty identifying it I have looked at 100's of pictures whats unusual is it does not have the auto feed assembly the numbers on the lathe are 9" swing 4' bed catalog # 520-A serial number 33492 I tried to attached a picture without any luck thanks for any help

kitno455
12-09-2016, 07:12 AM
SB used the A/B/C designation on their 9" workshop series. From the serial number and the catalog number, the OP's lathe predates those lathes. Parts are not nearly so easy to come by in that case.

allan