Grant Erwin - Jacobs E Taper

Aug 20, 2005 3 Replies
S

Hey Grant, you'd posted back in '97 about finding a Jacobs 6A-E chuck and maybe cutting an E taper to fit it. I've just come across one as well (in Vancouver). You wouldn't happen to have the measurements on said taper would you? Machinery's Handbook (20th) doesn't aknowledge the existence of a Jacobs E. I wonder how old this chuck could be... looks brand new.



Or anyone else? I seek measurements for a Jacobs E taper...



The taper looks similar to a 3JT, but I don't have a 3JT arbor kicking around to try in it. It wouldn't happen to be a strangely named Jacobs



3, would it?


-Scott


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G

What I had was a lousy fax from Jacobs. Call Jacobs and ask for their service department, ask them to send you the E taper spec. I had it, but you know how paper is, if you don't stay on top of it pretty soon you have a bunch of filing cabinets. I believe I tossed that. The chuck went long ago, don't remember where, don't care much.

GWE

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S

Thanks. I'll do that.

-Scott

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S

For future reference, if anyone else runs into this

Jacobs E Taper large diameter: 0.7886 taper: 0.624/foot

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