I've got a fair selection (about twenty) QC-30 holders with my 'new' BP
Series-1, but I'm interested in sourcing more in the future.

So far, I find a fair bit of CAT-40 stuff, but virtually no 30-taper
holders.

Any good ideas?

LLoyd

"Lloyd E. Sponenburgh" lloydspinsidemindspring.com fired this volley
in . 3.70:

I've got a fair selection (about twenty) QC-30 holders with my
'new' BP
Series-1, but I'm interested in sourcing more in the future.

So far, I find a fair bit of CAT-40 stuff, but virtually no 30-taper
holders.

Any good ideas?

LLoyd


Duh... never mind. It never crossed my fingertips to look for NMTB30
holders.

(It's that 'bout-60 dumb creepin' in)

LLoyd

On Mon, 12 Jan 2009 18:27:13 -0600, "Lloyd E. Sponenburgh"
lloydspinsidemindspring.com wrote:

"Lloyd E. Sponenburgh" lloydspinsidemindspring.com fired this volley
in . 3.70:

I've got a fair selection (about twenty) QC-30 holders with my
'new' BP
Series-1, but I'm interested in sourcing more in the future.

So far, I find a fair bit of CAT-40 stuff, but virtually no 30-taper
holders.

Any good ideas?

LLoyd


Duh... never mind. It never crossed my fingertips to look for NMTB30
holders.

(It's that 'bout-60 dumb creepin' in)

LLoyd


IRRC...Jon Anderson on alt.machines.cnc had some 30 taper stuff for
sale.

Btw...you can use both Cat and BMT 30 taper tooling in a NMTB30 taper
spindle. But you will need to make another longer drawbolt, and it
will be a differnt thread. But I mix and match on my NMTB 30 Gorton
Master mill all the time. And its a hell of a lot easier finding Cat
or BMT collet holders than NMTB collet holders


Gunner

Gunner wrote:
IRRC...Jon Anderson on alt.machines.cnc had some 30 taper stuff for
sale.

Yep, and I contacted him privately. I do have a number of DA 300, 200,
and 180 collet holders for sale.
Too many projects just now, but am trying to get them photographed and
posted to my garage sale page.

Jon

On 2009-01-13, Gunner wrote:

[ ... ]

IRRC...Jon Anderson on alt.machines.cnc had some 30 taper stuff for
sale.

Btw...you can use both Cat and BMT 30 taper tooling in a NMTB30 taper
spindle. But you will need to make another longer drawbolt, and it
will be a differnt thread. But I mix and match on my NMTB 30 Gorton
Master mill all the time. And its a hell of a lot easier finding Cat
or BMT collet holders than NMTB collet holders

If his Series-1 Bridgeport is like mine, it *needs* the NMB
flange for the quick-lock system to work. It doesn't *use* a drawbar,
just a rotating collar which swings ears over the flanges and then
tightens them down firmly.

And it won't work with a CAT V-groove flange which is thicker
than the NTMB one is.

Now -- my Nichols horizontal mill (and the vertical head for it)
do fine swapping between NTMB and Cat-V -- once I pull the draw stud out
of the Cat-V and make an adaptor for length and thread for the original
drawbar. (The spindle bore on my *really* old one is too small to pass
the larger thread.) Needless to say, the adaptors are firmly Loctited
in place. :-)

Enjoy,
DoN.

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