NEWBIE... Taper style for mh2?

Chickensoup · Mar 11, 2020

Hello all,

I’m brand new to the machinery stuff and have a cincy NO.2 horizontal mill with a vertical head attachment. My manual says that the taper size and style is 50mm standard? What does it mean by standard. Aren’t their several?

Thank you

johnoder · Mar 11, 2020

National Machine Tool Builders taper series can be found detailed in Machinery's Handbook

It goes from (at least) NMTB 20 to NMTB 60

Yours is NMTB 50 - which was very common - having been introduced about 1927

It is common for some makes to have a vertical head attachment taper one size below the machine's main spindle - such as NMTB 40 on a 50 taper machine

Might be pubs related to your 2MH here

Cincinnati Milling Machine Co. - Publication Reprints | VintageMachinery.org

ph

Chickensoup · Mar 11, 2020

johnoder said:
National Machine Tool Builders taper series can be found detailed in Machinery's Handbook

It goes from (at least) NMTB 20 to NMTB 60

Yours is NMTB 50 - which was very common - having been introduced about 1927

It is common for some makes to have a vertical head attachment taper one size below the machine's main spindle - such as NMTB 40 on a 50 taper machine

Might be pubs related to your 2MH here

Cincinnati Milling Machine Co. - Publication Reprints | VintageMachinery.org

ph

Thanks a million

Now I've gotta find an appropriate facing head and shank.

johnoder · Mar 12, 2020

A page dated January 1928 from B&S

svs · Mar 13, 2020

CAT 40 and 50 are common and minor modification will allow their use in NMTB spindles.

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NEWBIE... Taper style for mh2?

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