Collet options for MT4 lathe spindle

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SteveM
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Re: Collet options for MT4 lathe spindle

Post by SteveM »

Bill Shields wrote: Sun Nov 20, 2022 2:03 pm 3C on a 9A - question

Mine is 3AT - taper on collet closer nose is different?
Yes, there's a slight difference in the taper.

Logan and Atlas used 3AT and South Bend used 3C.

Steve
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Bill Shields
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Re: Collet options for MT4 lathe spindle

Post by Bill Shields »

:mrgreen:

interesting, since Jim was evidently using 3AT collets for 50+ years on a SB9
Too many things going on to bother listing them.
SteveM
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Re: Collet options for MT4 lathe spindle

Post by SteveM »

Bill Shields wrote: Tue Nov 22, 2022 10:52 am :mrgreen:

interesting, since Jim was evidently using 3AT collets for 50+ years on a SB9
They are only slightly different, but he could have been using 3AT collet sleeve, which would have been perfect.

Steve
David2011
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Re: Collet options for MT4 lathe spindle

Post by David2011 »

My lathe has an MT-4 spindle taper with a Bison 5C collet chuck mounted on a back plate. How well it releases is dependent on the collet but I'm very happy with the way it works. Stefan Gotteswinter has an excellent video on tuning up 5C collets for easier use.
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