Identifying drill chuck taper

[Hawkeye]

I did a search for "Jacobs No 34 chuck" and found listings with anything from a straight arbor to JT2, JT6 and JT33, plus a few others. The easiest way to find it might be to take it into a tool store with a good stock and just try as many as you can find until you find a fit.

 

[Tony Wells]

It should have a suffix beyond the #34

A 34-02 has a 2JT hole
A 34-06 has a 6JT hole
A 34-33 has a 33JT hole
A 34-33C has a 33JT hole also

You probably could probably take a pair of calipers and get a close enough measurement on the opening of the hole to determine which you have. Charts are available to give the dimensions of each taper.

 

[pjf134]

http://www.toolsandmods.com/morse-taper-dimensions.html

Check out this site and see if that helps.
Paul

 

[Tony Wells]

Wiki has a chart of dimensions that may help also. A little ways down the page. There are a couple of possibles around .650, but the depths and small end are different.

http://en.wikipedia.org/wiki/Machine_taper

 

[Vapomill]

Hello Nitsuj!
Do you know that "B16" is very close to "J33"?
This could be yous solution...
Bertrand.