round-dial 10EE gearbox shafts

For a Round Dial 10EE, Serial 26080

Can someone/someones please help me identify which shafts in diagram E-4 (Gearbox) are the shafts visible on the apron side of the gearbox. I am trying to put together a full bearings list and want to have all the correct terminology.


Apron side of gearbox



As far as I know, Shaft 1 is the leadscrew, which is oddly shown at the bottom of diagram E-4 and is shaft 91.

I would prefer not to guess on the rest although logic would dictate shaft 3 as the feed rod, shaft 2 as the cone gears and shaft 4 as the change gears, based on the orientation on the other side of the gearbox.

I am trying to correctly (meaning, with the proper terminology) define the bearings that belong on the shafts with part #'s
33,54,76 and 91 on the Gearbox diagram E-4.

#2,3,4 in the posted image all use the same New Departure 3204 bearing, at least that is what is in this gearbox currently.

#1 Uses a New Departure N20205, best I could find was an angular contact N20205. Is that bearing an angular contact bearing?

Might be helpful

Define lathe
Define publication

Yes, that would've been helpful.

1944 Round Dial 10EE
Diagrams and part lists from the Monarch manual

OK I must say dinman, if you are going to tear into a a RD gearbox you have much larger gonads than me and I tear into everything. Do you really want to do this? Is it really necessary? Shall I say again, Is it really necessary?

It is a spare gearbox. I am going to do it for two reasons, A. I have no time constraint to complete it and B. It will serve as a learning experience and if done properly give me a spare, OR I can replace mine with this one and rebuild that one too. ((-:

Feed Gearbox Shaft ID's

In your annotated picture:

1 is Leadscrew shaft (item 91)
2 is Clutch Shaft (item 76)
3 is Cone shaft (item 54)
4 is Tumbler shaft (item 33)

NB Item numbers above are from the 1942 Round Dial Manual, so may not be the same in the 1944 manual.

Good luck.
I used the 1942 Monarch manual when I rebuilt my CVA feed gearbox. The CVA manual lacks detail in the images.
Internally the gearboxes are pretty much the same.

Regards
Martin