Thread: WTB: Headstock spindle sleeve, MT5 - MT3

The title says it all - approximately 1.625" on the big end O.D. PM or email me at chfiggatt@yahoo.com

Chris, somethings amiss, At least in my world a #5 morse taper is 1.748"
on the large part of the taper

http://i418.photobucket.com/albums/p...ecenter001.jpg

This one measures 1.758" large end, 1.612" small end 2.816 long
Dave [acme thread]

Dave, you're correct. I've got a Sheldon / Sebastian geared head 13" x 36" lathe that has a MT 5 taper in the spindle (parts catalog verifies this). This machine originally came with a headstock spindle sleeve to go from MT 5 to MT 3. If I put a regular old MT 5 center in it it sticks out approximately 4-5 inches beyond the face of the spindle so, in theory, the MT 5 taper actually starts out in front of the face of the spindle. If I measure the big end of the taper at the face of my spindle, it's approximately 1.625". I know that these sleeves are out there, I've seen them on the 'bay from time to time........I'm just hoping that they're not rare and machine specific. I could probably make one, but wanted to try a posting and see if someone might have one laying around.

At about .631 per foot, a #5 sticking out just 4" (to gauge line) would make the spindle big end 1.537


J.O.

You may have a proprietary taper, there's also a Morse #4-1/2 taper that measures
1.500" dia. at end of socket.
Thats a shame, this #5 is really clean and nice, hardened and ground. But the 1.625" point is about a 1/4" from the smallest dia.
Happy hunting dave [acme thread]

I have one 1.525 big end, 1.375 small end and 3.400 long.
Email sent.
Chuck

My Victor 1640 has a 6MT spindle hole. Victor does have an adapter sleeve that takes it down to 4MT but they want $190 for it. I just got a Bison 6MT dead center from ebay and it works but sticks out like 8" past the nose of my spindle.

Does anybody have a 6MT to 4MT sleeve that is meant for a lathe headstock?

Thanks,
chuck

Originally Posted by bigbore577500

I have one 1.525 big end, 1.375 small end and 3.400 long.
Email sent.
Chuck

Sounds like it will work......I got your email.

clomb
Chuck
I have another one
Size is 1.830 big end, 1.675 small end and 3.610 long. it has a #3 morse taper inside.
15.00 shipped. if you can use it.
Chuck

Thanks Chuck.

If I am doing this right, your sleeve has an outer Taper per inch of 0.0429. According to Machinery's Handbook a MT6 should have a taper of 0.05213 per inch. I assume therefore that your's may not be a MT6 on the outside.

Does this sound right or do you know it is MT6?

Thanks,
Chuck

FWIW, Sheldon lathes use a "short" MT5 in the spindle. I'm not sure if this is proprietary to them, or some sort of obsolete standard.

You may want to join the Sheldon lathes Yahoo group. John Knox is on there, he was an engineer at Sheldon "back in the day".

Got the spindle sleeve from Chuck yesterday, it's just a tad small and sets recessed back into the spindle a bit but I believe that it will work o.k. Thanks again Chuck!

i have the same issue i own a R17 and i dont know what is the size of my taper for my dead stock.