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  #1  
Old 01-12-2009, 08:34 PM
Angus in Wyoming Angus in Wyoming is offline
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Jet 12 X 40--how to get 4 jaw chuck
Hello. I have a Jet 12 X 40 lathe. I don't have a 4 jaw chuck and badly need one. The spindle is threaded. The manual says it is 60mm by 8 tpi. I thought that was weird. I cant find a chuck or back plate for any metric diameters. What can I do? Thanks in advance.
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Old 01-13-2009, 02:48 AM
JFettig JFettig is offline
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Is yours like my new old one?
http://stuff.jfettigmachines.com/Jet1340/

I too am interested in knowing the answer even though I haven't looked into it yet.

Jon
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Old 01-13-2009, 11:12 AM
Angus in Wyoming Angus in Wyoming is offline
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They do look very much alike. I can't quite read your mfg date. I think it is 1966 or 86. Mine is 1983. Hopefully you can measure your spindle threads and find one easier than I can.
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Old 01-13-2009, 05:27 PM
JFettig JFettig is offline
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mine is 88, I don't plan on taking my chuck off any time soon. I'll check on my manual this weekend.

Jon
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  #5  
Old 01-14-2009, 07:08 AM
tp555 tp555 is offline
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Spindles are 2 1/4 x 8 threads or the taper mounts using D 1-4 or something. I have never seen any metric head mount threads.
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  #6  
Old 01-16-2009, 12:29 AM
Angus in Wyoming Angus in Wyoming is offline
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Yes!! I found one. The spindle is 2 3/8 by 8tpi---it spins right on Thanks Angus
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