| 3C sleeve (Dec 5, 2002) |
3c
collets (Feb 21, 2004) |
| 3C collets Needed
(Dec 18, 2002) |
Thread protector & 3c collet draw tube dimensions (Feb
21, 2004) |
| 3C "METRIC " Collets (Apr
16, 2003) |
3C
collet dimensions (May 28, 2004) |
| 3C
runout? (Jun 30, 2003) |
3C
collets (Aug 26, 2004) |
|
Smallest 3C collets? (Dec 4, 2003) |
3-C
Collets (Oct 22, 2004) |
| 3C
Collet thru hole dimension (Dec 11, 2003) |
3c
collet adaptor for 10k? (Nov 22, 2004) |
| 3C Collet -RSB- ? (Dec
12, 2003) |
3C
collet adapter pin (Feb 1, 2005) |
| |
| 3C sleeve |
| Does anyone
have a MT3-3C sleeve that they'd like to sell ? If anyone has one or
knows someone please drop me a line. Dave(7796) |
| I see them on Ebay fairly often
for about $80 with the nosepiece to cover the spindle threads.
C (7805) |
| I've
gotten several that way. I'm just trying to find one right now is
all. Dave (7806) |
| 3C collets Needed |
| Can
anyone give me a source for 3C collets under $ 20.00 per. I found
Travers Tool at $ 19.50 Victor Machine is at $ 20.90. Both are in
the NY. area. Both are imported collets I'm quite sure. Gotta buy
the whole range of sizes so I'm hoping to save a few bux. (8077) |
| Try out Dave
Walker. I have bought a few from him. Good guy and delivers on time.
Http://home.pacbell.net/daveanne (8079) |
| There have
been a lot of individual 3C collets on eBay lately. Would be worth
checking. I was able to get a 17/64ths recently that filled in my
set from 1/16th to 1/2". I have one 5/64ths extra if anyone is
interested. Rick K. (8093) |
| 3C "METRIC "
Collets |
| Need some
help to find a source for 3C Metric Collets 6mm and 9mm. Joe
(10225) |
| Hardinge. Scott Logan (10226) |
| Scott, Thanks
for the quick reply steering me to Hardinge. I hope I can find a
source that isn't $ 62.00 per collet. Joe (10227) |
| Joe, I'll see
what sizes I have at home. Sometimes these collets show up on E-bay.
Usually its S K Polishing out of Ohio offering them. They might be
worth a try. If you need, I'll try and see if I still have their
e-mail address. I have bought many 6K metric and a few metric 3C.
Tom (10228) |
| Tom, I hope
I'm lucky! could really use them. Joe (10230) |
| Do they
really have to be metric? 64th sizes come pretty close, close
enough, perhaps: 6mm = 0.236" 15/64" = 0.234" The 15/64th 3C collet
I have opens to 0.246" 9mm = 0.354" 23/64" = 0.359" The 23/64th 3C
collet I have opens to 0.372" Aren't any listed on ebay at the
moment, but 64th sizes do come up occasionally. I've picked up
several 64th sizes for prices ranging from $10 to $23 on ebay. Using
the search string 3C collet* (including the * as a wild card
character) on ebay to limit items displayed will speed up your
search. Rick (10233) |
| How much,
I just bought 3@ 5/16" ones for $29.95 each. JWE (10234) |
| I looked
last night, I have the 3.5mm (?), 4.5mm and 5mm in 3C. I had to go
through E-Bay to contact SK-Polishing. I'll let people know what
they say. There were a bunch of 6K metric collets and some 3C
metrics last week on E-Bay. I forgot to bid on some of the 6K's to
complete my set. Tom (10245) |
| What sizes are you looking for? You can
contact me through ebay. My id is dt38k. Randy (10296) |
| I did get a
response from SK-Polishing. They have no collets at this time.
Tom (10373) |
| At the
present time there is a group of SB 3C metric collets on E- BAY. The
size's range from 2.5 mm to 11 mm in steps or 1/2 mm. Jim
(10459) |
| 3C runout? |
| What is the
"normal" runout on SB 3C collets? What would cause unacceptable
runout on these things?
(12366) |
| With everything
clean and free from dirt or dings concentricity should be under
.0002 with a good collet. Now a badly worn collet could increase
that a bit as I had a 5/16 one that had .003 runout on a drill
blank. I got a new collet from Hardinge and the runout in the same
setup was .0001. If you are having a runout problem with collets
check first the collet to make sure it is not badly worn, next the
collet adapter both inside and outside and finally the spindle taper
for wear, dings or dirt that keeps things from seating correctly. JWE (12369) |
| Smallest 3C
collets? |
| What was the
smallest 3C collet available (for SB 9). My set starts at 1/16". Any
smaller? RichD (15351) |
| I'm not at home to
check, but I believe its 1/64". I have a full set, in 1/64th
increments, and I believe it goes to 1/64th. I know it goes down to
1/32" Rick (15352) |
| 3C Collet thru
hole dimension |
| I just purchased
some new imported 3C collets. The largest (1/2") collet does not
have a full 1/2" hole all the way through. The 1/2" portion has
about a 1/16" shoulder at about the end of the tightening "slits".
End result is that you can only put about a 2 1/2" length of 1/2"
drill rod etc. in the collet. Is this normal with 3C collets??
Should I send back to the vendor? I thought you could at least get
1/2" long rod through the spindle. Chuck
(15535) |
| The 1/2" - 3C
collet I have is made by Hardinge and it's thru hole measures .515.
The .500 chucking area extends about .625 into the collet, and then
goes to the .515 diameter. Ray.
(15536) |
| Chuck, I
have a -RSB- (has the arrow thru the letters, who is?) and an old,
unused made in England MSC (USA) and both are clean thru 1/2". In
fact only the first 1/2 inch is on diameter, the rest is larger!
RichD (15540) |
| If I were
you, I would return it. Did you buy any other collets from the same
supplier? Did you check them? At some point, I ordered some economy
3C collets from a major US tool company that I won't name. Some came
from Germany and UK. I had no problems with them. Some were made in
India. Their body diameter was 0.655 in and didn't fit the collet
closer hole (0.650) Some other imports (no identification of origin)
were useless. I mounted a piece of stock in them and I was able to
see the stock wobbling at one inch of the end of the collet. It was
really bad. (My 3 Jaw chuck is much more accurate) If I were you, I
would contact a 2nd hand supplier like like Sobel Machinery, Plaza
Machinery or Mermac Machinery and ask for a 2nd hand Hardinge, Royal
or South Bend collet, or be patient and check ebay. Maybe Randy has
some for sale. (most of my collets are either Hardinge or South
Bend) I bought most of my collets second hand and almost all of them
look like new. Don't be shy to ask for 3C or 1A collets. they are
almost the same, the 1A being just slightly shorter. (about 0.1 in)
If you desperately want brand new, then go Hardinge. Guy (15541) |
| Chuck, I
have a couple of different 3cs 1/2" and each of them take 1/2" stock
all the way through. BK (15547) |
| Thanks to all. I will be discussing return of
the 1/2" collet to the supplier ASAP. The other collets in smaller
sizes seem OK, tighten good on the appropriate size of stock etc.
Hopefully this one was just a fluke, but I understand your
recommendations to go with a better brand. Chuck
(15548) |
| I have a set
of collets for my 9C purchased from South Bend about 35 years ago.
Some are marked south bend , two ( 15/32 and «) are marked -RSB- set
as needed. All collets are marked with -south bend , size , and only
a number 3 . Every reference or comment on 9 lathes is on 3C , never
on just plain 3. Are they interchangeable ? (15559) |
| 3C Collet -RSB-
? |
| I have a set of
collets for my 9C purchased from South Bend about 35 years ago. Some
are marked south bend , two ( 15/32 and «) are marked -RSB- set as
needed. All collets are marked with -south bend , size , and only a
number 3 . Every reference or comment on 9 lathes is on 3C, never on
just plain 3. Are they interchangeable ? (15559) |
| Rose, Can you shed
some light on the -RSB- collet markings? Is this a SBL connection?
Some history here? RichD, (15563) |
| Quoting my
1956 SBL catalog( #5700), page 36 on collets: " -R-S-B- : (South
Bend Red Arrow) STEEL COLLETS. Threads are ground from solid steel
after hardening to give you the utmost in precision, durability, and
smooth operation. STEEL COLLETS are carefully heat-treated inside
and outside, including thread for maximum service and are precision
ground to exceedingly close tolerances for size and concentricity.
BRASS COLLETS are indispensable for many applications and have no
superior in their accuracy. Can be readily machined for holding
tapered or irregular shapes. When worn, they can be rebored to
larger diameters." So, I guess the RSBs are the Cadillac of their
line. Also the catalog calls the size 3 and not 3C. Ray
(15567) |
| The RSB
collets are truly fine. I have a set of them that I bought new 40+
years age and they are still as good as the day I bought them.
Wayne (15569) |
| Learn
something new everyday. I had a HUGE set of 5C RSB collets down to
64ths awhile back. I searched the net hi and low to find out what
rsb was. Couldn't even figure out if they were USA made collets or
not. I ended up selling them for dirt cheap on ebay. If I had put
the word Southbend USA in my title I would have got 10x the money. I figured they were some imports I had never heard
of. Jeff (15580) |
| 3c collets |
| I need a 3C 5/16ths
collet to complete my set and a Royal brand can be purchased from
MSC for $30.40, which seems reasonable to me. Can anyone comment on
the quality of Royal products? Jim
(17426) |
| 1) I have never
paid more than $15 for a collet, RSB or Harding on e-bay. 3C or 3AT
or 6K. And the $15 was new unused RSB. 2) look at 2597486141. The
difference between 3C and 1A is 2 11/16 vs. 2 9/16 in length. the
body diam od of 690 maybe spurious or maybe it a 3NS This is a
Rivett and I don't know if Logan made 3NS. Ask for clarification as
to the thread 3C/1A is 26 3NS is 20. Wait. 3C are popular. 5/16 will
come up. If you could handle 6K I have a spare for $4. See
http://shopswarf.orcon.net.nz/collet.html
for sizes. Jim B (17428) |
| I have sent a
question about o/l length, but haven't received a reply. If they're a
business, I may not hear back until Monday. Jim (17429) |
| Thread
protector & 3c collet draw tube dimensions |
| The 3C and the 3At
and the 1A all have a 0.645 -26 thread. see
http://shopawarf.orcon.net.nz/collet.html
From time to time there are tubes with the correct thread offered on
e-bay. You don't really need a "nose protector". The function is to
remove the sleeve or 3MT to 3E collet adapter. a wooden or brass rod
and a plastic hammer will work. I eventually purchased, in parts a
3C, a 3 AT and a 6K setup. I am still looking for 1/32 and 1/64 the
collets to fill out a single set (not three sets) in all three
series. I do have some extra 6K collets. Jim B. (17430) |
| I am looking
for a few 6K collets (I am now in my office and don't remember the
sizes) and if you have a list, I would appreciate it. On my desk
(why, I dunno) I have an extra 6k Hardinge 3/32" if anyone can use
it. Frank
(17433) |
| I have the
following spare 6K collets. Hardinge 7/16 9/16 3/16 RSB 5/16 9/16
All of these EXCEPT the Hardinge 7/16 were in a group I purchased on
e-bay to fill out my set. They seem to be in good condition. I ran
them up on my draw bar and the threads were Ok. I oiled them up. The
Hardinge came from another group. I received a 7/16 RSB in the above
group and I am keeping that. The 7/16 collet looks very new. It is
bright and shiny and clean. All the above are available at $4.00
each plus actual shipping. This is what I paid for the. I had
offered them on shop_tool_exchange . At that point I had a pair of
1/16 collets. I believe they are gone. I don't need spares and hope
somebody can use them. Jim B. (17434) |
| Could
you tell me how to get up on shop tool exchange and could me a
little info about them? Kenny (17437) |
| Go to
http://groups.yahoo.com/group/shop_tool_exchange/
and register to be a member. Dave
(17438) |
| 3C collet
dimensions |
| Anyone have
dimensions for the 3C collets or collet / mt3 adapter? JJ
(19346) |
| I
have somewhere on my hard drive a diagram of a 3c collet which I will
try to un-earth and post somewhere. The adapter is mt3 taper on outside
and 3c dimensions on the inside with a grub screw/key to engage the
keyway in the collet. Also you will have to fab a nose protector with
(I assume) a 1 1/2 x 8 female thread). You may have to exercise a
little patience whilst I search my jumbled mess. joe (19349) |
| dia. .642 thd
length 3/4 thds per " 26 body dia. .6495 length 2 11/16" head dia.
.852 head angle 12 deg. (19352) |
| JJ: 3C Collet
Dimensions can be found on the following site:
http://loganact.com/tips/collet.htm Ron
(19353) |
| In Home Shop
Machinist Sept/Oct 02 there is a good article on how to make your
own 3C and 6K collets. There is a good sketch with all dimensions
for both collets. Guy (19354) |
| 3C collets |
| I was looking thru
a new KBC catalog today at work, and found that they service 3C
collets from 1/16 to 1/2 in 1/32nd's. Most prices are under eighteen
dollars each. Just thought I'd past it along. Jim
(20670) |
| This may be old
information to everyone but msc of plainview, New York also sells 3c
collets from 1/16 to 1/2. they offer them in 1/64 increments. I have
bought several of them and they appear to be of high quality. they
cost about $28 each however. I have found this useful to fill in the
ones that I couldn't find on e-bay. Also I have a few questions if
someone could answer them I would appreciate it. I am new to this
site as of yesterday and find it fascinating. I recently bought a
set of 14- 3c metric collets on e-bay. Is there another source for
these? I have noticed that there are gears available to machine
metric threads on some sizes of English sbl's. However it doesn't
look like they have them for the 9 inch lathe. Is that true? also on
my 9c lathe, which otherwise seems to be in nearly new shape, the
bearings on the drive wheel at the back, the one that the motor
drives, seem to be worn so that the oil goes thru them quickly. I
talked to SBL about this a couple of years ago and they recommended
that I put cotton in the oil fillers which I did. I am using the "c"
oil instead of the "b" oil in them and having no problem but
I have
light usage and I always oil them before starting up. Is this a
typical problem and are there other fixes? marty (20676) |
| There is a
set of English to metric transposing gears available. These are
usually a compound 100 to 127 tooth pair. There are other
combinations which will work. If you use these as the idler gear on
your 9C the following happens. The lead screw is an 8 pitch. One
turn normally advances 0.125." The gear on the spindle is 24 tooth
if you have a 24 tooth gear on the lead screw, for each turn of the
spindle the tool moves 0.125 and you cut an 8 pitch thread. If you
place the 100/127 compound between the two gears, then the lead
screw will advance 0.0984525" . This is 2.5 mm exactly. you would
now cut a 2.5 mm pitch thread. Replace the 24 tooth gear on the lead
screw with a 30, 40, 60 tooth gear and you get 2, 1.5,1 mm pitch
threads. If you want finer pitches you need to use the 2:1 compound
and the transposing gears. a 50 tooth gear on the lead screw along
with the 2:1 compound and the transposing gear gives 0.6 mm There
was a thread a few months ago, from a member in South America on
getting close to the metric pitches without the transposing gears.
If you search the archives for +metric +threads or a similar
combination you should get a lot if info including the other
transposing gear combinations. Jim B. (20682) |
| Message
# is 17481. Capipio (20685) |
| I forgot to mention about placing 52 teeth as stud gear,
you can cut 1.25, 2.5 and 5mm thread with gear box setting on 22, 11
and 5.5 TPI. Capipio (20686) |
| They do make
Metric conversion Gears for the SB 9", but they seem rare and
expensive...the ones I have seen listed on Ebay have been running
about $350 and up. Walt
(20691) |
| As has been
posted before the 100/127 gears are exact, (by today's standards),
and expensive, however if you are willing to put up with a little
inaccuracy, which is all right if the thread or the nut is short,
fabricating a compound gear out of a 56 tooth and a 44 tooth gear
gives a ratio of 1.273:1. This results in an error of only 0.2
percent. Other possible combinations are; 54:42 (1.2% error) and
60:48 (1.6% error). E-Bay item 3836675332 contains a 56 tooth gear
leaving only a 44 tooth gear to find. I have a 54 , 48, and a 60
tooth gears if anyone needs it. (along with some others) I was going
to convert my 405 to use 18 DP gears, but I eventually got an entire
set of 20 DP gears. Jim B. (20696) |
| 3-C Collets
|
| With all the 9" SB
owners out there in eBay land I thought this recent sale would have
generated more group talk. Check out eBay Item # 3842822450. Neil
(21464) |
| I got a
bridge for sale cheap only 8 trillion dollars that has to be a phony
sale who in their right mind would spend $3500 for 33 collets and a
draw bar
(21465) |
| I remember a
similar set, in the wooden box selling for $350 just over a year
ago. I thought that was high then. Jim B. (21466) |
| WOW!! I can't
believe that they would go for so little. Those are the solid gold
ones aren't they. Tom (21467) |
| Fred, I don't
think it was a phony sale. Check the bidders by clicking on the
History "17 bids" (in red) on the first sheet of the auction site,
right beneath the Start Time. It gives the sequence of bids and the
amount of the bid. (21469) |
| I hate to be
so negative but this has to be one of the most ignorant individuals
I have ever seen to purchase this collet holder and set for this kind
of money. These are the people that are driving shaper and small
mill prices thru the roof, I have been trying to buy a decent shaper
off of ebay for over a year but I ain't paying $600 for a 40 year old
outdated piece of machinery just because some old man has deeper
pockets than I do, this kinda bidding is ludicrous!! I finally found
a shaper locally, a 10" Hendey the guy wanted a $1000 for it I
offered him $300, he chose to let it go to the scrap yard for about
$156, by the time I found out what scrap yard it was to late, what a
waste, I offered him a fair price and almost double what he got for
scrap, but if he had put it on ebay he probably would have gotten
$1000 out of it the way people bid ridiculously on this crap!
(21470) |
| Wow I just
looked at this. Was anyone able to determine if it was legit? I
guess we'll know if it gets re-listed. (21471) |
| You know I
looked at this further. There was a bidding war with at least two
guys going into the 3 grand range. The guy that won has 700+ items
to his credit. This wasn't a novice Ebayer getting carried
away. (21472) |
| To add to the
strangeness. Look at the completed items the winner has bid on. He
has won several other 3c closers and collet sets as well as several
Southbend milling attachments.. Must be trying to cornet the
market. (21474) |
| I think those
buyers never checked the price of collets brand new. Years ago
(before ebay time) I bought some 3C collets Hardinge brand new for
about $50 Cdn. This means $1600 Cdn for a full set (when it used to
be 0.72 US). In 2003, I bought a 3C draw bar and 12 collets odd
sizes for $75 US. What a difference! I saw a atlas taper attachment
being sold at a higher price than Clausing sells them. Guy (21475) |
| That is
interesting as the collets sell new from Hardinge for $29 each which
is $870, so I guess the old box has a special collector value
because the draw bar and nose piece are worth about $100 with the
thread protector. JWE (21477) |
| Somebody wants to pay 3G for some old
collets, let him. Fools and their money -- so long as the fool
doesn't set fire to the money, it "comes around" again. Really. I've
done this sort of thing (from the seller's side) out of spite, and I
admit it's crazy. But people will do it. Often the motive is not let
someone "take advantage" of them. (Not me, I have even crazier
motives). But I agree, this can be exasperating. I think you'll find
that these prices are constrained to certain brands and items. Chief
among the inflated brands is South Bend, and highest among SB prices
are parts and accessories. One problem is the *collector*, people
actually collect SB items the way some others collect old guns. The
price structure of collectibles is much different (and not
necessarily higher) than "usables". This collet set was a prime
collectible, but, like you, I wouldn't give over $25 a collet unless
I could inspect them in person first. If a collector was buying it,
the ratty old wood box was probably worth $500 to him. As for
shapers, ignoring shipping costs, you shouldn't have any trouble
getting a pretty good medium size (10"+) shaper for $300. It's the
little ones that don't require riggers to move that get the premium.
There's a metal shaper group at yahoo you should lurk for a while,
or let your needs be known. You'll connect with a reasonable one
after a while. Personally, I gave $500 FOB for a 7" Atlas shaper
because it was in good condition, was complete and original (no
welds, etc, with vise), and *was in pickup truck range*, and was
adequate for my needs. So my shipping costs were a nice drive in the
country and about 10 gallons of gas. Now if it were a 20"
Cincinnati,
I wouldn't have given $20 for it, although I would have drooled over
the thought of it. I just don't have the budget to repour my
basement floor and cut a larger door in the foundation, if you get
my drift. To make your head hurt, compare prices of horizontal mills
sometime -- almost toy-sized Atlas, $500-$1000... Cincinnati #2?
$200. Dave
(21494) |
| In the Shaper
group, somebody in Indiana has a 20" G+E Shaper available for sale
or trade. He needs the room and will take it to the scrapper if
can't get rid of it. He said in his post in the group that the
scrapper would probably give him $300 for it. If I lived closer and
had space, I'd give serious consideration to getting it. It's the 7"
SBs, Ammco and Atlas that get big prices, and have seen SB shapers
go on ebay for over $1,000. I've been wanting one for a long time,
but just might build the Gingery shaper as I can't justify $600 or
more for a machine with the same capacity of my Prazi (Unitech)
mill, as neat as shapers are. It seems that the huge "obsolete"
industrial machines all suffer from this this, not just shapers and
horizontal mills. It's great if you have the space and meet the
power requirements. Look at the prices people are obtaining old belt
drive 16" SB lathes for compared to the going rate of Heavy 10s,
10K's or 9" lathes. Gabe
(21501) |
| 3c collet
adaptor for 10k? |
| I was talking to a
gunsmith who also owns a 10k, and he showed me an adaptor he had
that fit the spindle and accepted 3c collets and used a normal
looking drawbar. It came with his machine but he felt they might be
commercially available. Anyone happen to know? Gene
(22194) |
| Any adapter
which fits in a 9" SB will work on the 10K. The 10K spindle is very
similar to the 9" spindle. I have a 10K spindle in my 9". I changed
over just to use 6K collets and get the slightly larger diameter
capability. These adapters show up regularly on E-Bay. Look at
3853883978 I consider this to be overpriced. You will also need a 3C
draw bar and what is referred to as a "nose protector". This last
piece is not required with the 6K collet but it is needed to extract
the 3C adapter. BTW. A similar setup exists for 3AT collets. I have
all three. Jim B. (22195) |
| Jim, my lathe came with a
nose protector and an extra draw bar that just might be 3c. I can
hope anyway. The reason I am considering this, since I already have
6k's, is to try and locate some (cheaper) square collets in the 1/8
to 3/8 range.
(22207) |
| 3C collet
adapter pin |
| Folks, My 3C collet
adapter (sleeve) is missing the anti-rotation pin. What's the pin
diameter suppose to be? I'm guessing 1/8". I'm thinking of making
one by turning one end of some 1/8" rod down to about 3/32"
diameter. That gives me a shoulder to lock the inboard side of the
pin. The other side of the pin is upset/preened to fill the
countersunk hole in the adapter. Material - something that can be
cold worked and is good in shear? Bob (24594) |
| I
measured the groove on a 3C collet and found it to be .108; looking
inside my adapter I see that the "pin" is actually square, though I
don't know why it would have to be. Dave (24597) |
| Square would have more contact area with the sides of the collet
groove and less likely to put a divot in the collet if it was forced
hard to try and spin. (24598) |
| My
mistake, make that .118" (I forgot to zero the dial). Dave
(24601) |
| Thank you, I hadn't
thought of that. (24603) |
| I have one
that had a roll pin in it replacing the normal one and then filed
down. This allows you to set the depth. Jim B.(24605) |
| My 2 SB collets measured a few thou over 0.125. Some
unmarked collets had keyways as wide as 0.2". A square pin does make
sense. Could even go with some larger diameter stock and flatten the
sides. That would give me a longer key - but there's probably only
so much the 3/32" diameter section can support. With a roll pin, I
wouldn't have to worry about it shearing, just the divots in a
homemade (softer) collet. The original SB collets were hardened and
ground - less likely to deform. Bob (24629) |
| I would
recommend against using a hardened pin for this. If something goes
together wrong, you want the cheapest, easiest to fix part to
suffer. I don't know what you have but most I've seen are press fit
CRS with the tip filed to fit the collet groove. Some mills use a
dog-point set screw but a lathe adapter is too thin so I'm betting a
soft dowel. Bill
(24641) |
