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.

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

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.

mine is 88, I don't plan on taking my chuck off any time soon. I'll check on my manual this weekend.

Jon

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.

Yes!! I found one. The spindle is 2 3/8 by 8tpi---it spins right on Thanks Angus

Angus,
Where did you find one? I need the same thing. Thanks

Jet 12 X 40--how to get 4 jaw chuck
 

You can call WMH tool who owns jet and powermatic brands the can get you the correct parts and even a new manual for your model lathe. the number is 1.847.851.1000 listen to the voice recording to get to customer service:smile: