MT3 Dead Center

All discussion about lathes including but not limited to: South Bend, Hardinge, Logan, Monarch, Clausing and other HSM lathes, including imports

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GlennW
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Re: MT3 Dead Center

Post by GlennW » Mon Sep 20, 2021 7:27 am

When I bought my grinder it came with carbide tipped dead centers that had tip damage. I sent them to Diamond Industrial Tool and they re-ground them to repair the tils and concentricity to the shank.

I don't recall what the cost was, but it wasn't insignificant, but they were very nice centers that would have been far more expensive to replace.
Glenn

Operating machines is perfectly safe......until you forget how dangerous it really is!

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SteveM
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Re: MT3 Dead Center

Post by SteveM » Mon Sep 20, 2021 5:48 pm

For a top brand name carbide center, regrinding may make sense compared to replacement cost.

For a plain one, labor to regrind is pretty much the same, but the replacement cost is lower.

Shars has them for $7.50 - might as well get a couple. Carbide tipped is only $12.

Steve

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Bill Shields
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Re: MT3 Dead Center

Post by Bill Shields » Mon Sep 20, 2021 6:12 pm

Exactly my point
Too many things going on to bother listing them.

whateg0
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Re: MT3 Dead Center

Post by whateg0 » Mon Sep 20, 2021 7:33 pm

SteveM wrote:
Mon Sep 20, 2021 5:48 pm
...

Shars has them for $7.50 - might as well get a couple. Carbide tipped is only $12.

Steve
I'm not sure that's a fair comparison. If the import center is anything like the import collets, it might still need to be ground!

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Bill Shields
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Re: MT3 Dead Center

Post by Bill Shields » Mon Sep 20, 2021 8:19 pm

Aw... now...just how bad COULD it be?🤪
Too many things going on to bother listing them.

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SteveM
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Re: MT3 Dead Center

Post by SteveM » Mon Sep 20, 2021 10:24 pm

whateg0 wrote:
Mon Sep 20, 2021 7:33 pm
SteveM wrote:
Mon Sep 20, 2021 5:48 pm
...

Shars has them for $7.50 - might as well get a couple. Carbide tipped is only $12.

Steve
I'm not sure that's a fair comparison. If the import center is anything like the import collets, it might still need to be ground!
They claim 4 tenths TIR (0.00039").

Steve

whateg0
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Re: MT3 Dead Center

Post by whateg0 » Tue Sep 21, 2021 11:07 am

SteveM wrote:
Mon Sep 20, 2021 10:24 pm
whateg0 wrote:
Mon Sep 20, 2021 7:33 pm
SteveM wrote:
Mon Sep 20, 2021 5:48 pm
...

Shars has them for $7.50 - might as well get a couple. Carbide tipped is only $12.

Steve
I'm not sure that's a fair comparison. If the import center is anything like the import collets, it might still need to be ground!
They claim 4 tenths TIR (0.00039").

Steve
I said what I said

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GlennW
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Re: MT3 Dead Center

Post by GlennW » Tue Sep 21, 2021 12:55 pm

Not all carbide tipped dead centers are created equal!

This is the MT3 I had re-ground, and the matching MT2 as well.
DSC03579.JPG
Glenn

Operating machines is perfectly safe......until you forget how dangerous it really is!

pete
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Re: MT3 Dead Center

Post by pete » Tue Sep 21, 2021 4:36 pm

Nice center Glenn and that's a lot larger chunk of carbide than most of the off shore one's seem to have. How bad COULD it be Bill? I dunno, I'm not saying there claims are bogus, but if I've learned anything about off shore tooling it's to test and verify everything you can. .0004" they guarantee? If that's true I'd want to mark the high or low side and make sure it's always in the tail stock either straight up or down so it has the least effect. Any half decent live center usually guarantee's to be with a couple of 10ths. A dead center ought to be fairly easy to match or do even better than that. Almost a 1/2 thou out is quite a bit.

John Evans
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Re: MT3 Dead Center

Post by John Evans » Wed Oct 13, 2021 8:03 pm

Messing around with my old B&S #13 . Decided to clean up some old dead centers.
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