| Spindle Sleeve 10L (Jan
14, 2002) |
Spindle Sleeve Adaptors - Supply
source (Jun 14, 2004) |
| Purpose of Spindle Sleeve
(Nov 15, 2003) |
Spindle Sleeves Again
(Jul 17, 2004) |
| Spindle Sleeve or Spindle Center
(Dec 20, 2003) |
Spindle sleeve CL205 NK
(Nov 7, 2004) |
| Heavy 10 brass sleeve
(Mar 5, 2004) |
|
| |
| Spindle Sleeve 10L |
| I recently
purchased a SB Heavy 10. I need a spindle sleeve in order to mount a
center in the spindle. If anyone knows the taper of the spindle let
me know. It may be possible to modify an unhardened MT taper sleeve
if I know the spindle taper. Or maybe someone knows a less expensive
source for the sleeve besides SB. SB wants ~$110.
(2719) |
| The taper is .60235" per foot.
This is the same TAPER as a #3 Morse, but at a larger diameter. We
have reducing sleeves to adapt this to a #3 Morse in stock. Price is
$82.69, P/N LP-2150. (2720) |
| On the collet
closer of my Heavy 10, the sleeve adapter has the following
measurements: small diameter: 1.532" large diameter: 1.630" length
of sleeve: 1.86" This is equivalent to a taper of 0.632" per foot.
It is NOT the same as a #3 Morse taper!!!(It does seem to be
equivalent to a Morse taper #5, which is specified as 0.63151" per
foot.) I hope that the above dimensions are helpful to you for
making a center holder for your spindle. I think that some slight
imperfections from a homemade adapter should be OK, since the force
from the tailstock pressing against the center should hold your
adapter in place. Rather than spend $110 or $83 for a reducing
sleeve, you might be better off getting a 5C collet closer. Then you
could put a center in a collet when you want to turn between
centers. An even simpler and rougher method of turning between
centers would be to bolt a plate over your dog driving plate, and
bore a hole into that plate, into which you can put a center. Of
course, the plate you add would require a hole or slot for driving
the dog. Jon (2723) |
| The
South Bend Specs for the 10L "Heavy Ten" spindle is 0.602" Taper
per foot as listed in "How To Run A Lathe" by South Bend Lathe. I
agree with Scott Logan that it is actually the same taper as Mores
tape No. 3 which is .6023" Taper per foot. South Bend Lathe just
rounded the dimensioned to three digits in this book. The large
diameter at the opening is 1.629" If you have the 10R "Heavy Ten",
the spindle has a Morse Taper No. 4 internal taper (i.e. .623" Taper
per foot) and a large diameter at the opening of 1.231" As to
finding a spindle adapter sleeve, I would call Plaza Machinery,
Sobel or Meridian Machine and ask for a good used one. Webb
(2725) |
| Where does it say
that??? My copy of that book (1942 edition, reprint by Lindsay
Publications, www.lindsaybks.com does not specify South Bend's
spindle dimensions. Does anybody else in this group actually HAVE a
10L and a pair of calipers to verify the dimensions I measured? I
have two 10L's (one is for sale), both with a collet closer, both
with the dimensions I measured. I think that the accuracy of my
quick measurements are within about .002" My lathes were
manufactured in 1941 and 1943. They have the standard 2.25-8
threaded spindle. I don't think that South Bend changed their
spindle taper since then, but it might be possible. Would someone
else on this list check to see if my post is correct, or else that
my ability to make a measurement is that lame? Jon (2726) |
| Well, I don't
know anything about your ability to make measurements, but the South
Bend Specification Sheet shows a taper of .6023" per foot.
Unfortunately, my copy is at my office, and I am at home, but I will
post it tomorrow.
(2727) |
| Jon, In my copy
of "How To Run A Lathe" By South Bend Lathe, Revised Edition 56,
Last printing date of 1966, Page 126 (just before the Index). I
don't have my Lindsay copy here and I don't know if they have this
information in there. I have included a couple of scans that will be
helpful. Webb Attachment: (image/jpeg)
SBL_Specs_1.jpg [not stored] Attachment: (image/jpeg)
SBL_Specs_2.jpg [not stored]
(2728) |
|
Webb and
Scott, Yes, I can see from your scan that the spindle taper IS
specified as being .602" per foot. But I still believe my own
measurements too. If anyone else has an old Heavy 10, would you
please check the measurements of the taper and post the result, so
that I can reassure myself that I am not insane? Jon (2732) |
| What is your 10L spindle size? 2-1/4x8tpi, or 1-7/8x8 tpi? I
am pretty sure that a MT3 dead ctr will fit right into the 1-7/8x8
tpi spindle hole, which I believe is the older spindle. I can check
later this evening if needed. I had a dead ctr that would slip right
into the 1-7/8x8 tpi spindle for turning between centers. I just
finished swapping the 1-7/8x8 tpi spindle out and installing a
2-1/4x8 tpi spindle so I could use 5c collets.
(2738) |
| Mark, I
think you'll find the 1 7/8" x 8 t.p.i. spindle (unit code "R") has
a Morse Taper No. 4 spindle taper. 9" and 10K's have a Morse taper
No. 3 spindle taper. The smaller spindle "Heavy Ten"s were made
right along with the more popular 10L but the 10R was later dropped
because of the poor sales it had. The "L" designated a "Large
Spindle" or the 1" collet capacity (5C collets) and I supposed that
the "R" designated "Regular Spindle" or the 11/16" collet capacity
(2S or 2A collets). Awhile back, I picked up three of the "Heavy
Ten"s with the smaller spindle. Maybe I'll find a 10L spindle
somewhere for a good price and swap it into one of those lathes. But
I bought them to practice my scraping technique. Webb
(2739) |
| I *KNEW* I
had scanned and posted this before, somewhere.
http://lathe.com/images/sb_7324.gif
I have posted a copy of this in the files section of this group.
This is a South Bend Spec. Sheet. As it shows, all South Bend Lathes
from the 9" through the 16" use the same taper angle, except the 13"
with 11/16" collet capacity. The taper of a Morse 3 is 0.60235" per
foot. It would appear (logically) that SB used the same taper angle
for all their lathes (this would simplify tooling and inspection).
The 9" and 10-K use a STANDARD #3 Morse. For some reason, they used
a STANDARD #4 Morse for the 13" with 11/16" collet. This lathe also
has a 1-7/8 x 8 Thread and a 1" spindle through hole. Scott
Logan
(2741) |
| My spindle
size is 2.25 x 8 tpi. I just called South Bend to ask about whether
they ever changed the internal taper angle on their spindles, and
was told that they have ALWAYS used the Morse taper angle of .6023"
per ft. So that says that I am wrong. I don't know why my collet
adapter sleeves measure differently. (2743) |
| On eBay is a
sleeve w/ ctr that looks like it will fit a 10L according to
description. Starts at $50, w/ a $60 buy it know. Usual disclaimer,
no connection to the seller. As a follow up to yesterdays thread, I checked and a
MT4 dead ctr fits my 1-7/8x8 tpi 10L spindle just like the book
says. Found that page in the back of my copy of How to Run a Lathe".
Lots of good stuff in there. I should look at it more often.
(2751) |
| Jon, Did you
ever come to a clear conclusion to this? My measurements (also of a
collet adapter) seem closer to your than the spec but there are
weaknesses in my measurement methodology that are obvious even to
me. I need a dead center and am trying to decide if I need to: A)
Buy an MT5 dead center at nominal cost. or B) Locate an
obscure/expensive South Bend taper to MT3 insert adapter. Ed (3778) |
| Ed, I believe
my own measurements for my own machine. I bought a Morse taper
sleeve, part number 214-8025, from Enco (
www.use-enco.com ),
for$10.99. This sleeve reduces the taper of a MT5 hole to a MT2
hole. I had wanted to do this so that I could use the MT2 dead
center and also the drill chuck with a MT2 arbor, which I already
had fro the tailstock. The sleeve fits snugly, though there is one
complication: The sleeve extends an extra 2.3 inches out in front of
the headstock. As a fix, I may try to turn down the extended portion
of the sleeve to match the spindle hole, and then take out the
sleeve and turn down the portion of the sleeve that had originally
fit the spindle taper. Then it should fit just right. Jon
(3780) |
| I have a 13"
SB lathe with a 2-1/4" spindle which I think is the same as your
heavy 10. I purchased a # 5 MT to a # 2MT that seemed to fit but was
to long. Since then I understand the correct MT for the spindle is a
4-1/2 ( this was added and called a MT, but there was no 4-1/2
originally) Since the MTs included taper angle varied a little bit
you probably should look for what's called a 4-1/2 MT . An hour ago I
looked at E-bay for South Bend lathe (item 1717218879) and saw a #5
MT -2 MT and a # 2 center at $47.85 with 10 hours to go with 20
bidders that says its for a 13" SB. The price you said from Enco was
about 11 bucks. Add the center guessing not over 10 bucks . So brand
new at $20 that may not work is going to cost some bidder at least
twice that. Gotta check cost and what will work. Walt
(3781) |
| Purpose of
Spindle Sleeve |
| Exactly
what is the purpose of a spindle sleeve? If you have a 9" SBL with a
#3 Morse Taper, then why use a #2 MT Center with a sleeve, why not
use a #3MT with out the sleeve? Is it so you can use the same size
taper in both head tail stocks?
(15009) |
| I can tell you
that the Morse taper number 3 in the headstock is not a true Morse
taper number 3. The taper is correct but it is smaller in diameter
than it should be. This means that MT3 tooling will stick out too
far. Perhaps the sleeve was an attempt to allow Morse taper number 2
to fit properly. However, the sleeve I have for my 10K lathe will
allow some MT2 tooling to fit ok without too much overhang, but
others will stick out too far. The only thing that really fits
properly is the half size MT2. Ed
(15011) |
| There are a
number of items with a #2 taper, taper shank drill bits in the 1/2"
range, milling bit holders, your tailstock Morse to Jacobs adapter
etc. The sleeve allows you to adapt these items to the spindle. For
a center you would probably be better off to use one sized directly
for the spindle, less accumulation of error. The larger spindle hole
allows you to use a 3C collet adapter. Check in the files section
for the SB_734.gif, the actual spindle taper is shown. I believe the
9" is a #3 Morse taper, some other models are a SB proprietary taper
of .602/ft with a smaller than Morse opening. This is where a
special adapter is needed. JP (15012) |
| Spindle Sleeve
or Spindle Center |
| My Junior 9
came with a small dead center and a small live center. Both fit
properly into the tailstock, but are too small to fit in the spindle
bore. In looking at catalogs from Enco, MSC, etc., I'm not having
much luck figuring out what I need in the way of a spindle center
(or sleeve that will accept the centers I have). The irony is that I
would try and make my own spindle center, except that I need to turn
between centers to cut a taper of that length. Secondly, the
business end of dead center that I have is scored. Would I be able
to clean it up using a carbide tool? Ralph
(15826) |
| Ralph I don't
know about the Junior but my 9" workshop has a #2 morse taper
tailstock and a #3 morse taper spindle. Google for "shopswarf" and
you'll get a website that gives the dimensions to measure. I think
Logan lathe might have a site where the dimensions are given for
various tapers. John
(15830) |
| Not sure
about the Jr but the spec in the files section shows the 9" to have
a #3MT in the spindle. If the spindle hole is .938" at the end its
most likely a #3MT, the following is if you want to nit pick... From
the machinery handbook #3MT has socket opening of .938", depth is
3.25" and small end is .778" with a taper of .60235"/ft The #2MT is
.700" socket, 2.5" depth (approximate) .572" small end and
.59941"/ft taper. Acquire a #3MT dead center. Blue the taper
shank and lightly insert it into the spindle with a turning motion.
Remove it and look at the contact. The taper in the spindle will be
shorter than the shank of the center. It will be around 2" which is
the approximate depth of the spindle taper. JP
(15831) |
| Ralph, I
haven't followed your thread, so at the chance of repeating
something already stated, your headstock is probably a MT3 taper.
You can use a MT3-MT2 adapter for some applications but a "reducer"
(for lack of a better term) will allow the point to be closer to the
headstock. While both pieces serve the same purpose. The "reducer"
is much thinner walled and was made by the lathe manufacturer for
this purpose. I was lucky and got one with an Atlas lathe a couple
of years ago. Larry
(15833) |
| This is why the Olde Ones had files
and the apprentices to man them. The Olde Bookes refer to doing this
regularly, in fact every time that the center is replaced in the
headstock, probably overkill for the usual purposes. They used a tp
grinder to true it, so should you :-), then mark it for orientation
with the spindle. (They were "particular" men in those days.) Old
centers are of two kinds, hard and soft, depending on their intended
use (tailstock vs headstock, respectively). Sometimes the hardened
ones had a narrow groove turned in the shank. The soft ones can be
dealt with with a file. Got to have the angle right, of course, or
it'll get scored again. Short answer: yeah, you want that center to
be 60deg +/- froghairs and smooth shiny. Use your center gauge to
check the angle. There seems to be general disagreement about what
is and is not a "Morse Taper", and what each size taper means. South
Bend has one opinion and Machinery's Handbook has a second opinion.
South Bend seems to believe that the Morse Taper is simply a number
of inches per foot of taper, and no nonsense about diameter or
length of taper. Each "numbered" Morse Taper has a different number
of inches/foot of taper. Just slightly different. They're
approximately 5/8"/foot, but "approximately" doesn't cut it for
actually fitting a center to a tapered headstock. If all this is old
news, well, sorry, but bear with me. A Modern "MT2" dead center will
pass through the headstock of a 1920's SBL 9" lathe -- your Junior,
both my model 82 "New Models". Flies right through, barely rattles.
According to evidence about to be "revealed", this is also the case
for *every* taper in every SBL of the "old time" series. (I.e. pre
"Cyclone/Turnado [sic]/Bankruptcy"). All "official" sources refer to
these 9" lathes as having MT2 taper headstocks and tailstocks. All
that I have seen, anyway. Moreover, SB and Machinery's Handbook
differ about what these tapers are. Go to the "SouthBendLathePix"
group at yahoo (join it). Go to its "Files" directory, to the
subdirectory [folder?] "Specs_and_Tech_Info", download for study and
reference the file "sb_7324.pdf". This is "late" information (1973,
I think), but nonetheless interesting. Under the table "Spindle
Taper..." note what it says about the 9" lathe (presumably Workshop
lathes). The opening of the spindle hole is .938", the taper per
foot is 0.602", the minimum diameter is 49/64, and the taper is
called "Morse Taper 2". I have an eerie sense of deja vu that I have
also seen these same specs for New Model/JR spindles, but can't find
the reference. It was a large JPEG, color, yellowish background.
But they are close, anyway. Observe that all the lathes except one
of the 13" ones have tapers of .602 in/foot. Some are called MT 2,
some are called MT 3. Note how the '10" 1-1/16"' lathe (the Heavy
10, in other words) is described as having an MT 2 taper, yet it has
a max opening in the spindle nose of 1.629". Notice how the '13"
-11/16"' lathe can be described as having a taper of 0.623 in/foot
and said to have a MT 3 taper, yet the '13" 1 1/16"' lathe can have
a .602 in/foot taper and also be called "MT 3". Something is
obviously wrong. Or something is misstated. I recently bought on
eBay, on a carefree whim, a thing called a "SBL Headstock center
bush", which is a short adapter. It seems to fit the New Model
spindle, and seems to accept MT2 tooling. The point of a (old, USAn)
MT2 center appears to protrude from the spindle about as far as it
does in old lithographs of the Junior and New Model. I have not yet
used blue on it, nor have I compared it to a modern Chicom MT3/MT2
adapter. If you ask me, it looks like that's what it is, with the
MT3/MT2 adapter sawn off just to the large side of where the slot in
the adapter for the drift is. This may be a recipe for making such a
sleeve for yourself, but I defer to more knowledgeable men. (We would
saw it off so that it can stay in the spindle and still allow the
spindle to pass 3/4 stock, presumably to be gripped by a chuck, or
to allow use of MT2 collets with a drawbar -- the latter is not SB's
plan, though. The adapter comes out to be replaced by a 3C collet
adapter sleeve in their worldview.) Since, like you, I am new to the
New Model, I don't have a lot of stuff to try, I'm not sure if I
have any MT3 tooling other than maybe a drill bit (US made) and the
Chicom adapter to try. I rely on the kindness of strangers (the net,
this group in particular, and books). Well, let's look in
Machinery's Handbook. (19th Edition is what I have handy). P 1610
has dimensions (ANSI B94.2-1964) for MT finishing reamers, and gives
this for large and small diameters for some of interest: Taper
Dimensions My comment MT2 0.5696 / 0.7444 This would pass unhindered
through our spindles MT3 0.7748 / 0.9881 Sounds like our spindles,
but would leave a shoulder in the 9" spindle MT4 1.0167 / 1.2893 Too
small for a Heavy 10. MT5 1.4717 / 1.8005 Leaves a shoulder in a
Heavy 10. Now I turn to p 1679, to see what Mach.Hdbk. says the
taper per foot should be: MT2 .59941 in/ft MT3 .60235 MT4 .62326 MT5
.63151 Just in case you think you have spotted a trend see 6 7: MT6
.62564 MT7 .62400 OK, conclusions? We'll skip over the obvious one
("Gee, I wish they'd used Jarno tapers on everything..."). I get
more questions than conclusions. What *is* a taper? Evidently it is
a taper-per-foot and a length and a diameter, at least for Morse
tapers. (Maybe the spec is "large end", "small end" and "distance
apart" -- a recipe for measuring gauges.) What does South Bend
*mean* when they say that the 9" has a MT2 headstock? I THINK THEY
ARE LYING, and have been lying since the 1920s (see catalog 44)
unless what they mean is that there is a MT2 center or two in the
kit shipped with the lathe, along with a sleeve that adapts it to
the headstock. The table T7324 perpetuates this lie, that isn't a
MT2 taper in that headstock, and I defy anyone to find me a South
Bend lathe with an MT2 taper in its headstock, although I don't know
about the 8" swing model. If T7324 is to be believed, *all* tapers
in SB spindles are proprietary. They have the *slope* of MT3, but
not the diameter or length. The 9" and 10K are *close* to the MT3
standard, and MT3 would *seem* to work in them. (The 9 and 10K are a
bit undersize for MT3, thus there is some metal in there that could
be ground out to correct damage and wear, a prudent idea.)
Interesting factoid: SB lists these spindle sleeves in the parts
lists. I have the pdf from the "Army" lathe manual, which are SB
docs in uniform, so to speak. Get this if you don't already have it,
look for it as "TM9-3416-235-14 P", you can find a copy at
http://metalworking.com/DropBox/_2001_retired_files/sbarmylathe.pdf
Anyway, the Army manual shows an IBP of a 10K headstock, see its
Page 5, call-out #47, described in the table on Page 6 "Part No.
L205NK, "SPINDLE SLEEVE". I guess that's the short answer. I plan on
getting a decent MT3 center for my headstock, and see if it fits
(including testing it with blue). Sleeves are just a source of
error, in my uninformed opinion. Dave
(15846) |
| Dave - I
don't know if I followed all that but my 10L works just fine with a
MT2 center and the South Bend spindle sleeve. It also works with 5C
collets and the spindle adapter for them. The sleeves and adapters
seem like a reasonable solution for a general purpose machine.
(15847) |
| Dave, I
believe you are misreading the SB tooling spec sheet. Using your
example below for the 9" lathe. (15848) |
| The Heavy 10
spindle taper is SB proprietary. It is about .10" smaller than a
#5MT on the socket end and has the taper of a #3MT and is only 2"
deep. I bought a #5MT to #3MT soft adapter for $10 and turned it
down to the proper size and taper rather than paying LeBlonde $65
for one. It works for me. Now all I need is a proper size faceplate
with a 2 1/4"-8 thread. I have a 8" driveplate with a 2
1/4"-6 thread I am willing to trade. Otherwise it is for sale. I
paid $35 for it and will sell it for the same, I believe UPS ground
is about $10-$12. A couple of people responded before but
communication was lost. JP
(15849) |
| Ah, so. These are the outside and inside
tapers of the ~sleeve~. Note, they're all Morse tapers of one kind
or another on the outside, slope-wise, anyway. The 13" one is MT4
slope-wise. Yup, agree with all. Some recent measurements. A list
member advises me off-list that an MT3 offshore center protrudes
about .75" "too far" from a post-war 9" spindle. On my 1927 New
Model, an old USAn center in a modern Chicom MT3/MT2 adapter
protrudes about 2.07" (measured from the nose of the spindle); the
same center in a (believed to be) proper sleeve measures 1.58",
which looks "useful". The SB part number for this sleeve is
"(L205NK" in the army TM, that should probably be read as "CL205NK".
The proper sleeve for 9"/10K is about .060 thinner in diameter than
the standard MT2/3 adapter. Dave
(15850) |
| Heavy 10 brass
sleeve |
| Does anyone know where I can get new ones? I am getting a
lot of lift in my spindle when I am cutting in reverse. I can see
the spindle lift up and it is chattering when cutting. I tried to
tighten down the two bots on the collar it does not make a
difference. Tom C.
(17584) |
| Before
ordering anything, remove the spindle from the headstock and inspect
it for wear. (You may have more problems than wore out brass
bearings) The bearings can be purchased directly from southbend. If
you are on a budget, then try some of the used dealers, and they
might get you a good used matched set. (
www.mermac.com ) You can order the brass bearings
straight from Southbend. (17590) |
| Tom, Have
you tried adjusting the bearings? If not, check out the maintenance
instructions in the technical information file. Here is a link to
them:
http://groups.yahoo.com/group/southbendlathe/files/Techinfo/Bearing_Adjustment/
You should find shims between the bearing caps and the headstock
casting. The instructions will guide you through the adjustment
process. Webb
(17591) |
| Thanks for
the help. I took off the bearing cap to reveal that the bearing
expanders was not in the sleeves. I never really examined it before
I used it. I used it this way for months. Now I have to try to figure
out if any damage was done. I mean it was just sitting on top of it
,unbelievable. Now I have the try to get it adjusted right. Tom (17595) |
| I
called South Bend, I told Rose I had a 13" SBL, the short one was
$400.00 and the long one was 410.00. I fell out of my chair. So I
got up on keywords and found a company that makes them. I cant
remember the name. I'll look for it. But first call Rose at South
Bend Lathe. Chris (17603) |
| You are
thinking of Miller Machine Fabrication - they are about 1/2 price
from what LeBlond is asking. I put the link for them in the Link
section. Ted
(17611) |
| Spindle Sleeve
Adaptors - Supply source |
| Do you remember
that once these could be obtained from SBL? They were used to
convert the larger Morse taper in the headstock spindle to the next
size down which was the same as the tailstock socket taper. For
example, the 9" SB had a #3 Morse in the spindle and a #2 Morse in
the tailstock so when turning between centers the spindle sleeve
adaptor was used so that both centers were #2 Morse. These adaptors
were made special (short) so there was minimum overhang in the
spindle when the #2 Morse center was inserted. They were hardened
and ground and they were pricey. The originals are no longer
available from SBL or LeBlond. However, the equivalent replacement
reducing sleeves are still being made by Rohm. See
http://www.gpsystem.com/rohm/product1/spinslv.htm
or contact any distributor which carries Rohm products. It is the
type 273 open for lathes. The Rohm replacement is better than the
original SBL part but it is even more pricy. But it is going to last
more than a lifetime the way we use it. It looks like their size
range would cover all of the spindle/tailstock combinations that
were made by SBL.
(19653) |
| I find that
hard to believe. Have you tried contacting Rose? Rose Marvin Parts
Works, Inc. 3702 W Sample St Ste 1104 South Bend IN 46619-2947
Business: (574) 289-7781 Business Fax: (574) 289-7783 E-mail:
rose@p... If they do not carry them, we do. The same item is used on
Logan 9" and 10" lathes. Scott Logan
(19655) |
| And #3 centers are
cheap. Why would you want to use an adapter?
(19656) |
| To continue
the discussion on this, If you look at a SB lathe catalogue (in the
specifications) they always list the headstock and tailstock center
to be the same i.e. a #2 Morse or a #3 Morse, etc. although the
taper in the headstock spindle is larger than in the tailstock
barrel. As well, if one looks at the "How to Run a Lathe"
publications, most of the illustrations for turning between centers
show the sleeve adaptor in place in the headstock spindle. Lathe
manufacturers show things a certain way for a reason although it may
not be what I think. For my 9" SB, which the specifications say has
#2 Morse centers (both headstock and tailstock), if you put a #3
Morse center directly in the headstock spindle taper, it appears to
fit but if you use the spindle sleeve adaptor with a #2 Morse taper
then the overall projection of the headstock center beyond the
spindle nose is visibly less with the adaptor than with the #3 Morse
center placed directly in the spindle taper. For heavy turning
between centers, the reduced projection should make a difference
both in finish and accuracy. Also, are the SB headstock spindle
tapers true (full depth?) Morse tapers. I don't think so but like the
spindles themselves are an engineering compromise between the need
to have as large a spindle bore as possible and the conflicting
requirement to have the spindle as stiff as possible. I only know
that with my 13" SB toolroom (the older version with the small bore
- pre 5C), if one puts a #4 Morse center directly in the spindle
taper it appears to fit but the projection beyond the spindle nose
is quite excessive, hence the need for a sleeve adaptor. This lathe
is also specified as having #3 Morse centers. On the related issue,
has anyone tried to purchase a sleeve adaptor lately? The parts
catalogue which I have from SBL is only two years old and all the
sleeve adaptors are listed as NLA (no longer available). LeBlond
wasn't supplying them either when I last ordered from them about a
year ago.
(19657) |
| Miller
Fabrication makes those. They are in the links. Paul
(19658) |
| Because the tail
of the lathe dog wont reach the faceplate with the overhang of the
#3MT center. I have one of Scott's nice adaptors but I often use a
common drill adaptor when I don't need real close tolerance or to get
up close to the faceplate. Saves the good one for those touchy jobs.
RC (19683) |
| Spindle Sleeves
Again |
| For more
information on this subject which compliments the earlier discussion
on this forum, take a look at the Chaski website under Machine Tools
and the "Buy, Sell, Trade, Wanted Free" heading. Getting the right
spindle sleeve for your lathe is a bit more tricky than even I
thought. The right spindle sleeve depends upon the lathe model, size
and the through diameter of the spindle. Some SB lathes take an
industry standard, which are relatively easy and economical to
obtain and some SB lathes require special spindle sleeves which are
rare and expensive.
(20077) |
| I posted the
info over at the Chaski site. The subject of spindle tapers is a
frequent and confusing one, but it needn't be so, at least amongst
us group members. The posted info is straight from the SB 7324
Tooling Dimensions Sheet, which is archived in
the files section: Files Jeff
(20079) |
| What is the Chaski
site?
(20098) |
| Spindle sleeve
CL205 NK |
| I'm looking for a spindle sleeve for my 9" model A. SN: 57371 NKR9.
I called Leblond and it's priced at $52.00 new. Does anyone know of
less expensive alternative? It doesn't have to be new. The sleeve is
a MT2 internal, MT3 external, part number: CL205NK. John
(21807) |
| Check out Busy Bee
Tools; I think they carry them.
(21811) |
| What is the
advantage to using an open back spindle sleeve (unless you are going
to use a drawbar) compared to say a mt3 to mt2 tanged adaptor? Also,
could you not simply cut down a tanged adaptor? When I place my
spindle sleeve alongside my adaptors, the sleeve stops right in
front of the drift hole in the adaptor. Why not just cut one down to
size? BK
(21941) |
| You can pass
a long work piece through the open spindle. Feed the working stock
in from the back for production like a screw machine. You can get
3MT drawbar collets. You can use other collet sizes (3C?) with an
adapter sleeve. The tanged morse taper was designed for production
drills and the early industrialists got a little carried away.
JP (21943) |
| Of
course you could cut the rear off a tanged adapter to turn into a
open end sleeve. I would use the unhardened type to start with. It
will be easier to cut. Webb
(21944) |
