Identify "extra" gears
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  1. #1
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    Default Identify "extra" gears

    I purchased a 9" South Bend which included two "extra" gears. They do NOT fit on this lathe. I'm hoping someone can identify which machine these belong on.

    The large gear:
    5.5" dia.
    64 teeth, 3/4" wide
    3/4" bore with 1/8" keyway

    Small gear:
    2.320 dia.
    26 teeth, 5/8" wide
    5/8" bore
    Attached Thumbnails Attached Thumbnails img_2372.jpg  

  2. #2
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    They are both 12DP gears. Probably for a SB 16" or equivalent lathe.

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    I'd say not from a lathe at all.

    allan

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    I also got a 7" faceplate that doesn't fit this lathe. It has a 1 3/8 - 8tpi thread. Is there a South Bend lathe that has this thread or should I just bore it out a little and rethread to 1 1/2 - 8?

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    No SB lathe had a 1-⅜" spindle nose thread. The minimum was 1-½" for a 9" and 10K.

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    Yes, in fact the early 9" workshop had 1 3/8" spindle...i.e.- Model 5, not sure about the tpi though.

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    Quote Originally Posted by iwananew10K View Post
    Yes, in fact the early 9" workshop had 1 3/8" spindle...i.e.- Model 5, not sure about the tpi though.
    I wasn't sure about the early-early SB's. All I know is that from WW2 on, no spindles of that size were produced.

  8. #8
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    Quote Originally Posted by iwananew10K View Post
    Yes, in fact the early 9" workshop had 1 3/8" spindle...i.e.- Model 5, not sure about the tpi though.
    The Model 5 was 1 3/8-10
    Ted

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    img_2434.jpgimg_2433.jpg
    Quote Originally Posted by SBLatheman View Post
    The Model 5 was 1 3/8-10
    Ted
    It's definitely 1 3/8-8. I don't know what it might fit. Guess it could be bored out and threaded to 1 1/2-8.

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    Real question is do you have a faceplate to bolt it to to do the job.Once you have it trued up on a faceplate you can remove it by unscrewing that plate and checking the fit on your spindle. Cast iron threads beautifully.

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    Quote Originally Posted by k3vyl View Post
    Real question is do you have a faceplate to bolt it to to do the job.Once you have it trued up on a faceplate you can remove it by unscrewing that plate and checking the fit on your spindle. Cast iron threads beautifully.
    I don't want to turn it into a common 1 1/2 x 8 if someone is looking for a rare, hard to find, 1 3/8 x 8.

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    could you post pics of both sides of plate and see if there are any casting numbers anywhere?

    I love trying to identify obscure stuff.

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    No numbers of any kind!

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    Could it possibly be 1 1/4-8? Common for wood lathes.


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