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1956 13” spindle nose taper , what is it?

Tommyash

Plastic
Joined
Aug 18, 2020
Hi, I’m a newbe to this site and to the South Bend in general.
I want to run 5c collets in this machine, but not quite sure what spindle nose adapter to use.
I’ve read conflicting information on the actual inside taper in the spindle that would take the adapter for the 5C collets.
Some information said it was a MT 5, and others said it was a MT 4.5 taper.
This has the external 2.25-8 thread for a chuck if that helps identify what spindle I’ve got.
Thank you for any and all help with this....Tom
 
Probably .602 taper per foot on dia and 1.629 at big end - same as all 1" collet lathes

Ref.. How To Run A Lathe

I'll even guess all the 1" collet lathes used the same piece to hold the collet

SB Spindle dims.jpg
 
Thank you!
What’s a “collet lathe”... one designed to accept a collet system?
What other kinds of spindles were made?
 
What other kinds of spindles did they make back then?
I’ve only seen spindle that take either thread on chucks or cam lock chucks.
All of them had a collet closure
 
What other kinds of spindles did they make back then?
I’ve only seen spindle that take either thread on chucks or cam lock chucks.
All of them had a collet closure


Lodge and Shipley had this "Double Nose" design in production from about 1915 to 1938 - in two sizes. The huge "shoulder" was way ahead of other heavy duty makes as far as rigidity. The threads are inside the large diameter

L&Spg9.jpg
 
How cool is that !
That would make it way easier to put a big heavy chuck or face plate on, and would be dead nuts accurate too !
Thanks for sharing the info!
 








 
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