Re: [CAD_CAM_EDM_DRO] #40 tapers?

I'm fairly certain now its NMTB #40, but the CAT dual flange or V-flange
looks like it might be compatible with the
spindle + collar ring also.?. Does this sound correct?


At 01:45 PM 9/17/00 -0500, Rick Dulas wrote:

>
>Howdy Tim! I'm preparing a little monograph on Milling Machine Tool
>Tapers which will be available as soon as I can figure out who to send
>it to.
>
>NMTB is a single flange taper and the grand-daddy of tapers, as
>evidenced by the numerous names it has. You'll see it called Quick
>Change, NMTB, MM, National Standard, American Standard Machine Taper &
>...
>ANSI defines six taper shank sizes including #30, #35, #40, #45, #50,
>and #60. You may come across #30, #40, & #50 tapers. For all the sizes
>the taper is 3 1/2" per foot.
>
>The BT and CATerpillar are dual flange tapers of a later vintage. The BT
>is found mostly on Japanese and some European machines, while the CAT is
>found mostly on BIG American iron. Given this is a Bridgeport Series II,
>I'd suspect NMTB #40. But I understand that Bridgeport will put nearly
>any taper on a machine on a custom basis.
>
>Rick {who learned about tapers after too many that don't fit his
>machine} Dulas
>
>BTW I have dimensioned drawings of the major taper families as part of
>the taper web page I'm putting together. Let me know if you need a copy
>before the web page goes up.
>
>Tim Goldstein wrote:
>
>> Studying the specs on the Bridgeport series 2 (What else are you
>> suppose to
>> do while waiting for it?) it list the spindle as No. 40 milling
>> machine.
>> When I look in the supply catalogs I see Cat 40, BT 40, ISO40, and
>> NMTB 40.
>> What are the differences and are any of them interchangeable. Which
>> one
>> really fits the Bridgeport?
>>
>> Tim
>> [Denver, CO]
>
>
>[Non-text portions of this message have been removed]
>
>
>Welcome to CAD_CAM_EDM_DRO@...,an unmoderated list for the

discussion of shop built systems, for CAD, CAM, EDM, and DRO.

>
>Addresses:
>Post message: CAD_CAM_EDM_DRO@egroups.com
>Subscribe: CAD_CAM_EDM_DRO-subscribe@egroups.com
>Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@egroups.com
>List owner: CAD_CAM_EDM_DRO-owner@egroups.com, wanliker@...
>Moderator: jmelson@... [Moderator]
>URL to this page: http://www.egroups.com/group/CAD_CAM_EDM_DRO
>FAQ: http://www.ktmarketing.com/faq.html
>bill,
>List Manager
>
>
>