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spindle nose thread

 

What is the thread on the spindle nose? for an atlas 10f please.? Im sure i heard its 1"x 8 tpi N something but all i can find in that size is 1" x 11.5 tpi
 

1-1/2x8tpi. I have a TH42... the 1" spindles are on their 6" lathes... can, IIRC, be 1x8tpi or 1x10tpi depending on age.?

Bill in OKC

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On Thursday, December 5, 2024 at 10:20:06 AM CST, hedgesben via groups.io <hedgesben@...> wrote:


What is the thread on the spindle nose? for an atlas 10f please.? Im sure i heard its 1"x 8 tpi N something but all i can find in that size is 1" x 11.5 tpi
 

>1-1/2x8tpi. I have a TH42... the 1" spindles are on their 6" lathes... can, IIRC, be 1x8tpi or 1x10tpi depending on age.?
?
All of the Atlas badge 6" lathes had 1"x10 tpi. The early Craftsman badged ones had 1"x 8 tpi and the later ones switched to 1"x10 tpi.?
As far as I know nobody has ever confirmed why Craftsman wanted Atlas to make the 1"x 8 spindle but most speculate it was so chuck threads matched their wood lathe spindles at the time.
 

The 6” Craftsman metal turning lathes (made by Atlas) had 1”-8 spindle nose thread until 1959 when the Craftsman changed to the Timken tapered roller bearing headstock. Then the spindle nose changed to 1”-10. From 1940 through 1958 the Craftsman 6” lathes had the bronze bushing headstock. The first Craftsman 6” metal turning lathe which came out in 1938 had a 3/4-16 spindle nose. You are correct stating that the Atlas 618 lathes always had Timken bearing headstock with the 1”-10 spindle nose. This is based on a review of Craftsman catalogs that I have on pdf.

Steve Haskell
Troy, MI
 

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MrPete222 put out a video today asking for info on this subject.

On 12/8/2024 8:08 AM, Steven H via groups.io wrote:

The 6” Craftsman metal turning lathes (made by Atlas) had 1”-8 spindle nose thread until 1959 when the Craftsman changed to the Timken tapered roller bearing headstock. Then the spindle nose changed to 1”-10. From 1940 through 1958 the Craftsman 6” lathes had the bronze bushing headstock. The first Craftsman 6” metal turning lathe which came out in 1938 had a 3/4-16 spindle nose. You are correct stating that the Atlas 618 lathes always had Timken bearing headstock with the 1”-10 spindle nose. This is based on a review of Craftsman catalogs that I have on pdf.

Steve Haskell
Troy, MI

 

Is this the video to which you refer?
?
Raymond
 

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That's it.

On 12/13/2024 7:39 AM, mondosmetals via groups.io wrote:

Is this the video to which you refer?
?
Raymond

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