On Jan 29, 2019, at 1:33 PM, Jody <jp4lsu@...> wrote:

I agree, I'm a little concerned about how fast mine come out.? It only came to my attention because the oil cup was using oil so slowly with the felt in there.? So I pulled.out to see what happens.

-Jody

-------- Original message --------
From: "jmartin957 <jmartin957@...> via Groups.Io" <jmartin957@...>?
Date: 1/29/19 11:51 AM (GMT-06:00)?
To:?[email protected]?
Subject: Re: [atlas-craftsman IO] Concern with my Spindle?

The dust covers are not oil seals, but they are meant to retain oil. As Robert states there is a gap between the dust cover and the spindle, and this is where the oil is supposed to leak out. ?So the oil level – at least for a while - should be high enough to reach the bearing rollers.

Jody says that the oil leaks out at the bottom of one of his dust covers just as fast as he can feed it in. That tells me that his dust cover is not retaining any oil at all, and that his bearing may be running dry.

If the dust cover is not a good enough fit in the head stock bore to retain any oil at all, then it should be replaced or perhaps sealed with a silicone or similar sealant.

On Jan 29, 2019, at 11:51 AM, Jon Elson <elson@...> wrote:

On 01/28/2019 11:46 PM, cwlathes wrote:

The dust covers on my 10F have little slots in them to clear the key . . . My understanding has been that they are there to protect the bearings and are not oil seals . Carvel

Yes, exactly!? That why they are called "dust covers".? Their purpose is to keep swarf from getting into the bearings.? They may actually trap just a LITTLE bit of oil that would otherwise ooze out, but that's not what they are there for.? Obviously, looking at the way they are made and fit, there's no WAY they could function as a SEAL to retain oil.

Jon

Yes Animal, Ken is often referred to as the third person :< } Yup I like to use them as adjustable feet on projects. Most of the hardware stores that have the full set of the plastic boxes of fasteners include the "elevator" bolts but the employees often have no idea that they are there. Send them on a search for a snipe nut while you locate the elevator bolts ; ) I like to go through every box in the store and make a mental catalog of all of the fasteners, this helps me to solve problems with off the shelf parts when I hit a road block or can't find a fastener in my extensive collection.

Ken H in AZ


On Tue, Jan 29, 2019 at 11:19 AM, mike allen wrote:

??? ??? Ken , yer only the 3rd person I'm associated with? that has
heard of "elevator " bolt's . I asked my hardware store owner for some &
he said? " what are they ?

??? ??? animal

On December 5, 2018 at 2:21 AM "Robert Downs via Groups.Io" <wa5cab@...> wrote:

Over the years, Atlas used three different gear sizes.? The gears used on the 6” lathes, the mills, and the horizontal indexers are smaller than the other two sets or sizes and can’t be used on the 9” and larger lathes.? The gears used on the 9”, 10” up through 10D and 12” up through 101.07402 are larger with coarser teeth and have a 3/8” hub length.? The gears used on the 10F (including the QC), the 101.07363 through 101.27440 and on all of the 1/2“ bed machines are the same as used on the earlier 9”, 10” and 12” except that they have 1/2” hub lengths.? The Atlas part number of the 24T gear that could be used with one of the two 48T gears to form the 24/48T compound gear to reduce the feed rate on all of the QCGB equipped 10” and 12” machines is 9-101-24A.? There are two of these on the tumbler equipped later 3/8” bed change gear 10” and 12” machines and one of them with the QC equipped ones.? One of the two (where applicable) is the Reverse tumbler gear.? The 1/2 “ bed change gear machines only had one because the tumbler gears were 36T.? So Atlas has been making the 24T gear in question since 1938.

?

Anyway, at least up to a few months ago, Clausing still carried the 9-101-24A gear.? It’s up-front cost was higher than that of the Boston gear but it was usable out of the box.? So the all-up cost was about the same if your shop rate is low enough.

?

Robert Downs

?

From: [email protected] [mailto:[email protected]] On Behalf Of Dan and Marlene Coleman
Sent: Tuesday, December 4, 2018 19:18
To: [email protected]
Subject: Re: [atlas-craftsman IO] Atlas 3991 12x36 feed reduction complete

?

I looked on Ebay, and I think a guy is now selling the 24 tooth gear with the keyways.? Maybe someone who knows all the differences in the Atlas gears can differentiate.? The Ebay gear is steel.? I like the one gear set up.? I think a 24 tooth gear may have been part of the 6” and 9” lathes gear train, but I’ve been told the specs are different than the 12” lathe gears.

?

Dan Coleman

?

?

?

On January 29, 2019 at 1:52 AM "Robert Downs via Groups.Io" <wa5cab@...> wrote:

Yeah, but the kicker is trying to make the bushing with integral external double keys.? Without that, you’re still dead in the water.

?

Robert Downs

?

From: [email protected] [mailto:[email protected]] On Behalf Of Charles
Sent: Monday, January 28, 2019 21:45
To: [email protected]
Subject: Re: [atlas-craftsman IO] Missing Feed Gear Bolt

?

If only he had a tool capable of turning rods of steel into custom hardware:’). ?Simple turning threading and a little file work. ?

?

Charles

?

On Jan 28, 2019, at 5:18 PM, Robert Downs via Groups.Io <wa5cab@...> wrote:

Jody,

?

Besides a third special bolt (9-69A), the Atlas 10F and early 12” all came with a third 9-73A Sleeve, 9-70A Bushing and 9-93A Washer.? When you call Clausing to order those, you may as well order the bolt as well.?

?

?

Robert Downs

?

?

?

Robert,

-------- Original message --------
From: "Robert Downs via Groups.Io" <wa5cab@...>
Date: 1/29/19 5:22 PM (GMT-06:00)
To: [email protected]
Subject: Re: [atlas-craftsman IO] Concern with my Spindle

Jody,

?

You didn’t literally mean the bottom of the dust cover, did you?? Didn’t you mean through the gap underneath the spindle?

?

?

?

I agree, I'm a little concerned about how fast mine come out.? It only came to my attention because the oil cup was using oil so slowly with the felt in there.? So I pulled.out to see what happens.

??? ??? Ken , yer only the 3rd person I'm associated with? that has
heard of "elevator " bolt's . I asked my hardware store owner for some &
he said? " what are they ?

??? ??? animal

Be quiet....I have to many other projects for.the lathe.

I could see the uses for a rest, but would it get used a lot?

Im not sure, but ignorance is probably the reason I wouldn't see it get used a lot.

-Jody

-------- Original message --------
From: mike allen <animal@...>
Date: 1/29/19 5:26 PM (GMT-06:00)
To: [email protected]
Subject: Re: [atlas-craftsman IO] Missing Feed Gear Bolt

a should make yerself a filing rest for the lathe

??? ??? animal

On 1/29/2019 1:37 PM, Jody wrote:

I forgot to mention that these were NOS USA made.? These will probably
camp out around the lathe.
-Jody


-------- Original message --------
From: mike allen <animal@...>
Date: 1/29/19 3:23 PM (GMT-06:00)
To: [email protected]
Subject: Re: [atlas-craftsman IO] Missing Feed Gear Bolt

??? ??? good deal . I have been verry happy with the Simonds files
that I have bought recently

??? ??? animal

On 1/29/2019 11:36 AM, Jody wrote:

Thanks animal, I didn't think about them. I found a gear bolt
assembly on ebay with the bolt, bushing, sleeve, nut and washer.? All
OEM.? Thesame guy also had lot of 5 Simonds Swiss pattern files and I
bought them too.
-Jody


-------- Original message --------
From: mike allen <animal@...>
Date: 1/29/19 12:23 PM (GMT-06:00)
To: [email protected]
Subject: Re: [atlas-craftsman IO] Missing Feed Gear Bolt

Jody have ya tried my? " " they
have used craftsman , logan & south bend parts

??? ??? animal

Mike and Brad,

?

There are no seals on the spindle or spindle flange.? The four steel cups, one of which is on each side of each bearing on the spindle, have a average clearance of about 0.012” all around on the flange OD behind the chuck and between the cup ID and spindle or spacer OD at the other three locations.? This is from actual measurements on my particular 3996.? I don’t know what the tolerance on this fit is.? But this is the gap through which the oil from the oil cups on top of the headstock drips or runs.? The cups are more correctly classed as covers rather than seals.

?

On the issue of removing the Woodruff key from the spindle, if you drive the key into the inner dust cover and dent the cover, you drove the spindle out too far before removing the key.? The Atlas Technical manual (readily available to all members) clearly says to remove the key with a pair of pliers.? If you loosen the set screws in the collar to the left of the small spindle gear, the two gears and the pulley will move slightly to the left.? The may ?still be slightly underneath the bull gear.? If sp, when you remove the key, you pull up on the end nearest the tailstock and it comes out at an angle.? Same when you reinstall it.? You stick the left end of the key into the keyway in the bull gear and into the key seat in the spindle and then tap the right end down with a pin punch.? Theoretically there should be just enough room to get the key into and out of the keyway with the key straight but in practice it may not quite work out that way.? Unfortunately, the Technical Bulletin does not warn you about this.

?

Robert Downs

?

From: [email protected] [mailto:[email protected]] On Behalf Of mike allen
Sent: Monday, January 28, 2019 20:05
To: [email protected]
Subject: Re: [atlas-craftsman IO] Concern with my Spindle

?

my question would be , if the seals are good on both sides of
the bearing ,how does the oil get inside of the bearing ?

??? ??? animal

?

Robert,

Do you suppose you could help me figure out what year my manual was
published? I've made a brief comparison of the PDF and hard copies I've
got and none are duplicates. My 1937 hard copy section seven is titled
"ATLAS F-SERIES 10-INCH LATHES" and the pages are numbered one to 63.

Don

On 1/28/2019 12:23 AM, Robert Downs via Groups.Io wrote:

The MOLO’s that on the Copyright page say Copyright 1937 were printed
and reprinted (7 known versions) between 1937 and 1953.? I have never
seen nor have I ever heard of anyone having a First Edition actually
printed in 1937.? I have two and have heard of three or four more
editions that were probably printed in 1938.? Except for Chapter 7 –
Threading, which is machine specific, the majority of all editions are
pretty much generic.? Exceptions are that the majority of photos are of
the 10” model in production the year that each copy was printed.? And
the speed related charts? such as RPM versus diameter for specific SFM
assume a 10” or 12”.? However, the charts are close enough to be
usable.? There actually was at least one printing or edition where
Chapter 7 is specific to the 6”.? However, they are pretty rare.

From 1954 on, Chapter 7 includes coverage of the 6”.? >From 1957 on,
Chapter 7 covers the 1/2“ bed 12” and the 6”.

The change to a recommendation for SAE 20 appears to have been
retroactive.? However, I have been wondering lately whether it might be
better to continue using SAE 10 on the sleeve bearings in the 101.07301.

Robert Downs

*From:*[email protected] [mailto:[email protected]] *On
Behalf Of *Don Newbold
*Sent:* Friday, January 25, 2019 12:21
*To:* [email protected]
*Subject:* Re: [atlas-craftsman IO] new guy - old 618

I've looked through a bunch of pdf's and a couple of original printed
manuals. My original 1937 Atlas manual never mentions 618 or any other
model number, as best I could tell, but it discusses both bearing styles
and shows pictures of both styles.

I noticed one little tid bit of information. In the 1937 manual 10
weight oil is used. In the later manuals, 50s/60s and later, 20 weight
is used.

Don




<>
Virus-free. www.avg.com
<>


<#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>

I forgot to mention that these were NOS USA made.? These will probably
camp out around the lathe.
-Jody


-------- Original message --------
From: mike allen <animal@...>
Date: 1/29/19 3:23 PM (GMT-06:00)
To: [email protected]
Subject: Re: [atlas-craftsman IO] Missing Feed Gear Bolt

??? ??? good deal . I have been verry happy with the Simonds files
that I have bought recently

??? ??? animal

On 1/29/2019 11:36 AM, Jody wrote:

Thanks animal, I didn't think about them. I found a gear bolt
assembly on ebay with the bolt, bushing, sleeve, nut and washer.? All
OEM.? Thesame guy also had lot of 5 Simonds Swiss pattern files and I
bought them too.
-Jody


-------- Original message --------
From: mike allen <animal@...>
Date: 1/29/19 12:23 PM (GMT-06:00)
To: [email protected]
Subject: Re: [atlas-craftsman IO] Missing Feed Gear Bolt

Jody have ya tried my? " " they
have used craftsman , logan & south bend parts

??? ??? animal

I forgot to mention that these were NOS USA made.? These will probably
camp out around the lathe.
-Jody


-------- Original message --------
From: mike allen <animal@...>
Date: 1/29/19 3:23 PM (GMT-06:00)
To: [email protected]
Subject: Re: [atlas-craftsman IO] Missing Feed Gear Bolt

??? ??? good deal . I have been verry happy with the Simonds files
that I have bought recently

??? ??? animal

On 1/29/2019 11:36 AM, Jody wrote:

Thanks animal, I didn't think about them. I found a gear bolt
assembly on ebay with the bolt, bushing, sleeve, nut and washer.? All
OEM.? Thesame guy also had lot of 5 Simonds Swiss pattern files and I
bought them too.
-Jody


-------- Original message --------
From: mike allen <animal@...>
Date: 1/29/19 12:23 PM (GMT-06:00)
To: [email protected]
Subject: Re: [atlas-craftsman IO] Missing Feed Gear Bolt

Jody have ya tried my? " " they
have used craftsman , logan & south bend parts

??? ??? animal

?

I agree, I'm a little concerned about how fast mine come out.? It only came to my attention because the oil cup was using oil so slowly with the felt in there.? So I pulled.out to see what happens.

-------- Original message --------
From: "jmartin957 <jmartin957@...> via Groups.Io" <jmartin957@...>
Date: 1/29/19 11:51 AM (GMT-06:00)
To: [email protected]
Subject: Re: [atlas-craftsman IO] Concern with my Spindle

The dust covers are not oil seals, but they are meant to retain oil. As Robert states there is a gap between the dust cover and the spindle, and this is where the oil is supposed to leak out. ?So the oil level – at least for a while - should be high enough to reach the bearing rollers.