NMTB 40 Tool Holders

[Manual Artisan]

Looking to get a number of NMTB 40 tool holders for my Bridgeport Mill. I'm having very little luck finding these types, and the ones I have currently are Erickson.

 

[extropic]

I see NMTB40, from time to time, on eBay. Do you look there?

 

[Manual Artisan]

I see NMTB40, from time to time, on eBay. Do you look there?

yes, but it's really inaccurate and they're all over the place with different types that aren't relevant to my spindle.

 

[benmychree]

Since when does a BP have a 40 taper spindle?

 

[Manual Artisan]

Since when does a BP have a 40 taper spindle?

No idea, but this is what it came with when I got it.

 

[cross thread]

Like this ? https://www.ebay.com/itm/354677184251?hash=item52946856fb:g:qwAAAOSwkptkIaBy&amdata=enc:AQAIAAAAwBc/OyZl8K/M0qa9aHsnpyftC3zIxoRWeUjg6NTzFY9wfHvexCi0XCl5lI+yCahzuwARxJjzt9WSEWYN1DTibYkdfhyFt4tyPYbij9FgRlMl2Ck53BbjaIRIyM5x7JWEd2C3B3xvaInBcBSQ7cgex4DqWNn9yGSXyEptlBEZgLc2U1ZVENKxtHic5ZKd/PLMmSg2IM2eVHMA6l+PP4HJDcvplI1EVdwazeK5OR9BsSNAHmDMnQZ5anmSJJjBi2PbXg==|tkp:Bk9SR6jEl6m9Yg
Or this ? https://www.ebay.com/itm/3543547191...tGilsx8/w+NFzCOQsLzOfc5GjuB1|tkp:BFBMqMSXqb1i

 

[Karl_T]

pic does not show scale, be sure it is not NMTB30 as Bridgeport sold lots of those and I have never seen NMTB40 in a bridgy.

That said, put up a watch on eBay. over the years i have bought a HUGE amount of NMTB40 there. I especially like the devleig boring heads - SUPER accurate and rigid. example: https://www.ebay.com/itm/3848008392...zR70EckZPmjy7lcqaBH0+x0Q==|tkp:Bk9SR5qStau9Yg

 

[benmychree]

pic does not show scale, be sure it is not NMTB30 as Bridgeport sold lots of those and I have never seen NMTB40 in a bridgy.

That said, put up a watch on eBay. over the years i have bought a HUGE amount of NMTB40 there. I especially like the devleig boring heads - SUPER accurate and rigid. example: https://www.ebay.com/itm/384800839264?hash=item5997ead660:g:xIkAAOSwhMliP6rK&amdata=enc:AQAIAAAAwIPmUfm7OixWg2bblNmbwu1Z/cUwbNwjE0K5T+M8Mtx5H4ImmaDx6xpIMq1CAUaa2kgQo+mGumVcUU1Pti734gKNC5GRX/mzgl2wXeT15EMnLw2KFAT1se9ssyCtJ9V4xaYzU5tDsnELntlqY40OTNiUNrOPGlr8+0c0VYPd6tYm119kR4XQr+poj3pkKMO70OMlqRB4pok3R+XPqfVH3YM1mYDOhpxovdWmLIaPz0zR70EckZPmjy7lcqaBH0+x0Q==|tkp:Bk9SR5qStau9Yg

Unless, Bridgeport made some greatly enlarged model of milling machine, a 40 taper could never be made to work, it is simply too big to fit the normal Bridgeport spindle and quill; a 30 taper on the other hand would lend itself to the normal BP spindle. I use 30 taper on my Fray vertical mill and the universal attachment on my B&S #2 mill, and vastly prefer it to R8, as tool changes are more easily made, and it does not depend in the tiny pin used to help drive the R8 and is so easily sheared off.

 

[Manual Artisan]

Thank you all for the assistance, and yes the 40 does fit my mill. I'm guessing it's because it's the Series 2, but as for the reason why I really have no clue.

 

[benmychree]

Thank you all for the assistance, and yes the 40 does fit my mill. I'm guessing it's because it's the Series 2, but as for the reason why I really have no clue.

How about posting a few pics of the machine itself?