Atlas 10100

[markba633csi]

Going back to the 088 drawing: How do they expect you to assemble the bearings when the rightmost one's ID is ten thousandths smaller than the left? Freeze the shaft in liquid nitrogen? And/or heat the bearing way up? That's a puzzle.
Usually, the opposite is true since the rightmost bearing is often a tight press fit and the left is a lighter interference fit to allow for preload adjustment

 

[kopcicle]

The 6205 25 mm Ball Bearing Inner Dimension 25mm X Outer Dimension 52mm X Width 15mm
That takes care of the 701-083 spindle in the 101.212 (Craftsman) Atlas 6" MKII
I'm still a bit stumped about the bearing journals @markba633csi tnx ....

 

[kopcicle]

then If I may
@wa5cab , Robert , do I have it correctly ?
The chuck bearing is 07100 and the cup 07196. This incidentally is the Left crankcase bearing for an Ironhead Sportster.



Okay then , straight from Timkin

first the 07100

d - Bore​	0.9843 in25.001 mm
B - Cone Width​	0.6522 in16.566 mm

then the 07079

d - Bore​	0.7874 in20.000 mm
B - Cone Width​	0.5614 in14.260 mm

The cup is the same in any case

D - Cup Outer Diameter​	1.9687 in50.005 mm
C - Cup Width​	0.3750 in9.525 mm

This still leaves us with a broken drawing , or two .

 

[markba633csi]

We may have found a misteak on the drawing methinks

 

[kopcicle]

I see what you did there

 

[kopcicle]

I keep missing an opportunity to call Clausing. I seem to have found someone that can tolerate me
The same person gave me (us) the drawings. I'll ask but i'm near sure I'll get "f--- if I know"

I don't have the jets to get my headstock apart and back together at the moment.
Joel does have a ball bearing 101.212 (.875" tail) he was going to check against the drawing.
Mine is a .750" tapered roller bearing 10100 .
We'll see

 

[wa5cab]

@kopcicle,

The Timken bearing part numbers agree with what I show. And incidentally, all of the mills use the same cup and cone on the right end of the spindle. On the left end, the cup is the same but for some reason the cone is a 07087.

What drawings did you get from Clausing and what dimension appears to be wrong?

 

[kopcicle]

should be obvious...

for the -083 , how do you get a .977" past .9847" ?
for the -088 , how do you get a .990" past a 1.0007" ?

if of course I can still read a drawing

 

[kopcicle]

I must be blind.
for the -083 ,the .977" is for a reduced diameter gullet. Both bearing surfaces are .9847"
for the -088 ,the .990" is for a reduced diameter gullet. Both bearing surfaces are 1.0007"
those dimensions are only called out on the left journal.
D'Oh!

 

[wa5cab]

kopcicle,​

Do you have the 701-088 complete and as a .PDF (or .TIF, which I can convert to .PDF.)? Whomever converted the one that you uploaded to JPG chopped off the top of the drawing. And drawing uploads to Downloads should preferably be .PDF unless one of the unstable photo types is all that is available.