All discussion about lathes including but not limited to: South Bend, Hardinge, Logan, Monarch, Clausing and other HSM lathes, including imports
Moderators: GlennW , Harold_V
SteveM
Posts: 7767 Joined: Mon Jun 27, 2005 6:18 pm
Location: Wisconsin
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by SteveM » Tue Nov 22, 2022 10:36 am
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
Bill Shields
Posts: 10548 Joined: Fri Dec 21, 2007 4:57 am
Location: 39.367, -75.765
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Post
by Bill Shields » Tue Nov 22, 2022 10:52 am
interesting, since Jim was evidently using 3AT collets for 50+ years on a SB9
Too many things going on to bother listing them.
SteveM
Posts: 7767 Joined: Mon Jun 27, 2005 6:18 pm
Location: Wisconsin
Post
by SteveM » Sat Dec 03, 2022 10:30 pm
Bill Shields wrote: ↑ Tue Nov 22, 2022 10:52 am
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
Posts: 178 Joined: Wed Apr 24, 2019 3:18 pm
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by David2011 » Fri Jul 07, 2023 3:46 pm
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.