Did you ever wonder why......

[Tozguy]

Morse taper mount for drill chucks are called B tapers? as in the following listing:

http://en.sanouchuck.com/english/productshow.asp?id=64&type=2

The answer is.........

B Tapers[edit]

B-series tapers are a DIN standard typically used for fitting chucks on their arbors, like the older Jacobs taper series. Each taper in the B-series is effectively the small or large end of a Morse taper:

B10 = small end of MT1

B12 = large end of MT1

B16 = small end of MT2

B18 = large end of MT2

B22 = small end of MT3

B24 = Large end of MT3

The number after the B is the diameter of the large end of the taper to the nearest mm, and 'about' 1mm larger than the large end of the socket (~2mm in the case of B22 and B24) [4]

 

[4ssss]

I still haven't found the meaning of life, but when I do this will be my next big thought.

 

[extropic]

The number of the spec for B tapers is DIN 238.

The link is to a .pdf by ROHM giving dimensions of their arbor tapers.

ROHM Drill Chuck Arbors

 

[Wreck™Wreck]

I still haven't found the meaning of life, but when I do this will be my next big thought.

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