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gear specs for Van Norman 22LU lead attachment

Brandenberger

Cast Iron
Joined
Sep 19, 2017
Hi,

I happened to get a lead attachment for my VN22LU with some but not a full set of change gears.

Based on what I have, it *seems* like they are 16DP, 14-1/2degree PA gears that are .500" wide at the tooth, .5625” wide at the bore.

1.186” bore diameter, .186” keyway width.

I'm judging this by some gear cutters I have which seem to fit. Does this sound right? It doesn't appear the manuals show any specs, other than gear tooth counts. The set should have 2 x 24 tooth, a 28, 32, 40, 48, 56, 64, 72, 86, and 100.

Thanks!
-Phil
 

Brandenberger

Cast Iron
Joined
Sep 19, 2017
Hi,

I happened to get a lead attachment for my VN22LU with some but not a full set of change gears.

Based on what I have, it *seems* like they are 16DP, 14-1/2degree PA gears that are .500" wide at the tooth, .5625” wide at the bore.

1.186” bore diameter, .186” keyway width.

I'm judging this by some gear cutters I have which seem to fit. Does this sound right? It doesn't appear the manuals show any specs, other than gear tooth counts. The set should have 2 x 24 tooth, a 28, 32, 40, 48, 56, 64, 72, 86, and 100.

Thanks!
-Phil

And if anyone has some pictures of the idler shafts that would be helpful too, I have the enclosed gearbox, and the parts that attach to the leadscrew and dividing head, but missing theintermediate idler stud shaft(s).

Curiously the bracket for mine seems to be the double slot type which might have usually been the open gear type?
 








 
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