Re: Off Topic Question for the old-timers
Hi,
?
Look at the link below.? I think it might
be a Oilite? Spherical Bearings.? Hope this helps…
?
?
Paul?J?J
?
?
Apologies up front for OT, but you guys know more than anyone I've
spoken to on the phone today.
Does anyone know the proper terminology for the attached pic? Pillow, Pillow
Block, Oval, ovoid, egg, spring, all seem to not be proper.
It's an oil-impregnated sintered bronze bushing that was very common a half
century ago in small electric motors. It is a self-centering design, usually
held in place by a convex spring, felt washer, and riveted or spot-welded
retainer. I have had success in the past just boring out and pressing in new
straight bushing stock. I think I had a little too much bite on the chuck and
it sprung out oversized once removed.
Yes, I know, i could make one, but that 5/8 OD is a bit out of the range for
1/4 ID stock. This is an on-going issue as I repair small electric motors for
classic cars.
I rarely post, but I learn a lot on this forum.
Thanks in advance.
Jeff in Lone Star, TX
(I have no idea how my screen name changed when we switched from Yahoo Groups)
|
Re: Off Topic Question for the old-timers
Jeff
Plastic may not be a good alternative I am afraid the shaft may bond to the plastic when it gets hot. I would call McMaster-Car and ask a technical person what
they have to substitute oil lite bronze 562-692-5911 Just because I answered you don't mean I am a old timer
GP
--------------------------------------------
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On Wed, 1/9/19, rockindubya via Groups.Io <jeffwoods95@...> wrote: Subject: [atlas-craftsman IO] Off Topic Question for the old-timers To: [email protected] Date: Wednesday, January 9, 2019, 4:04 PM Apologies up front for OT, but you guys know more than anyone I've spoken to on the phone today. Does anyone know the proper terminology for the attached pic? Pillow, Pillow Block, Oval, ovoid, egg, spring, all seem to not be proper. It's an oil-impregnated sintered bronze bushing that was very common a half century ago in small electric motors. It is a self-centering design, usually held in place by a convex spring, felt washer, and riveted or spot-welded retainer. I have had success in the past just boring out and pressing in new straight bushing stock. I think I had a little too much bite on the chuck and it sprung out oversized once removed. Yes, I know, i could make one, but that 5/8 OD is a bit out of the range for 1/4 ID stock. This is an on-going issue as I repair small electric motors for classic cars. I rarely post, but I learn a lot on this forum. Thanks in advance. Jeff in Lone Star, TX (I have no idea how my screen name changed when we switched from Yahoo Groups)
|
Re: Off Topic Question for the old-timers
On Wednesday, January 9, 2019 1:04:08 PM MST you wrote: Apologies up front for OT, but you guys know more than anyone I've spoken to
on the phone today. Does anyone know the proper terminology for the
attached pic? Pillow, Pillow Block, Oval, ovoid, egg, spring, all seem to
not be proper. It's an oil-impregnated sintered bronze bushing that was
very common a half century ago in small electric motors. It is a
self-centering design, usually held in place by a convex spring, felt
washer, and riveted or spot-welded retainer. Maybe ssearch for "oil impregnated spherical bearing"? Most of the hits are on Chinese sites but maybe with some digging... Here's one:
|
Re: Off Topic Question for the old-timers
Jeff
Have you considered plastic there is some tough plastic out there.
GP
--------------------------------------------
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Show quoted text
On Wed, 1/9/19, rockindubya via Groups.Io <jeffwoods95@...> wrote: Subject: [atlas-craftsman IO] Off Topic Question for the old-timers To: [email protected] Date: Wednesday, January 9, 2019, 4:04 PM Apologies up front for OT, but you guys know more than anyone I've spoken to on the phone today. Does anyone know the proper terminology for the attached pic? Pillow, Pillow Block, Oval, ovoid, egg, spring, all seem to not be proper. It's an oil-impregnated sintered bronze bushing that was very common a half century ago in small electric motors. It is a self-centering design, usually held in place by a convex spring, felt washer, and riveted or spot-welded retainer. I have had success in the past just boring out and pressing in new straight bushing stock. I think I had a little too much bite on the chuck and it sprung out oversized once removed. Yes, I know, i could make one, but that 5/8 OD is a bit out of the range for 1/4 ID stock. This is an on-going issue as I repair small electric motors for classic cars. I rarely post, but I learn a lot on this forum. Thanks in advance. Jeff in Lone Star, TX (I have no idea how my screen name changed when we switched from Yahoo Groups)
|
Off Topic Question for the old-timers
Apologies up front for OT, but you guys know more than anyone I've spoken to on the phone today.
Does anyone know the proper terminology for the attached pic? Pillow, Pillow Block, Oval, ovoid, egg, spring, all seem to not be proper.
It's an oil-impregnated sintered bronze bushing that was very common a half century ago in small electric motors. It is a self-centering design, usually held in place by a convex spring, felt washer, and riveted or spot-welded retainer. I have had success in the past just boring out and pressing in new straight bushing stock. I think I had a little too much bite on the chuck and it sprung out oversized once removed.
Yes, I know, i could make one, but that 5/8 OD is a bit out of the range for 1/4 ID stock. This is an on-going issue as I repair small electric motors for classic cars.
I rarely post, but I learn a lot on this forum.
Thanks in advance.
Jeff in Lone Star, TX
(I have no idea how my screen name changed when we switched from Yahoo Groups)
|
??? ??? That's a pretty darn deal , I hope his students know how
lucky they are
??? ??? animal
On 1/9/2019 3:26 AM, Dave Matticks
wrote:
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Show quoted text
Where my son teaches there
are two campuses,? East and West Leyden high schools.
He's primarily at East but is
chairman of the department at both.
This includes machine shop,
wood shop, auto shop and construction!
East has had a machine shop
forever,? they just opened a brand new one at West a couple
years ago. Very nice!
Manual and CNC. Turning,
milling, a little surface grinding and while not really an
official part of the curriculum, welding.?
He's got a pretty solid
background, used to work with me part time while in HS and
full time prior to the air force.?
Now he's an "aircraft metal
technician" in the air national guard.?
Classes are pretty full and
he comes up with a lot of cool projects to keep up the
interest!?
He works with a lot of local
shops that will hire a kid tomorrow with his recommendation.?
It's all good.?
Dave?
|
Re: Internal Threading - Compound Setup
On 01/09/2019 07:07 AM, Jody wrote: Bill,
Are you happy with PD thread wires?
It says made in the USA by Fischer Scientific. Really, these things are not rocket science. They are a set of centerless-ground rods of specific diameters, and a paper chart. (Or, you can do it with a simple equation.) As long as the rods are accurate on diameter, there just isn't that much to it, and you can check the diameters with the same mike you use to measure the thread if in doubt. If your threads are coming out rough, then you may need to make a few measurements at different spots and average. Some tweaking of speeds, number of threading passes and tool geometry may help the finish of the threads. And, of course, certain mystery metal may never give nice threads. Jon
|
Re: Internal Threading - Compound Setup
You buy or make a plug gauge with as nearly exactly the thread you need to mate to as you can manage. For a lathe chuck, a duplicate of the spindle.?
For the one I made for my Atlas I was essentially copying one of my class projects, but 8 tpi instead of the 12 tpi they wanted. So I wound up cutting something like 3/4" of finished threads off because the Atlas spindle doesn't have an inch and a half long threaded nose. Until I made the 2-1/4x8tpi stub for my Heavy 10L it was the most perfect thing I've ever made on a machine tool. Personal best, not necessarily something a real machinist would be impressed by. My instructor said it was the best I'd done. Took several hours, as I was checking both of them frequently. Not something a job shop would approve of.?
Bill in OKC
Sent from my Sprint Phone.
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-------- Original message -------- From: Ronald Mattson <mattsonrj@...> Date: 1/9/19 9:39 AM (GMT-06:00) Subject: Re: [atlas-craftsman IO] Internal Threading - Compound Setup
I rarely comment, but this one has me mystified. How do you use thread wires on internal threads? Even if the wires are bent into a circle to fit inside the internal thread, you need an internal micrometer or a caliper with a blade anvils to measure the wires on a tangent. On regular calipers or micrometers, each anvil will be measuring on their two edges, so the measurement will be inaccurate on the small side. Please enlighten me. Regards, Ron Mattson
On Wednesday, January 9, 2019, 10:23:55 AM EST, Jody <jp4lsu@...> wrote:
Thanks Bill,? I think I'm going the thread wire route.? Doing a little research and digging it seems to be the method for accuracy, it's economical and versatile.
As far as mic's, I have all I need there. 0-6" mitutoyo 6-9" Starrett (single micrometer with 2 anvil inserts)
So I'll be getting some thread wire. -Jody -------- Original message -------- From: "Bill in OKC too via Groups.Io" <wmrmeyers@...> Date: 1/9/19 8:00 AM (GMT-06:00) To: [email protected] Subject: Re: [atlas-craftsman IO] Internal Threading - Compound Setup Thread wires and regular micrometers. Mitutoyo or Starrett if you like, but regular mikes. ;) They are way more versatile, and relatively speaking, cheaper, too.?
http://www.starrett.com/metrology/product-detail/585BP
$371, and only does 7,8, & 9 tpi. How often are you going to be measuring those threads?
http://www.starrett.com/metrology/metrology-products/precision-measuring-tools/micrometers/outside-micrometers#currentPage=1&displayMode=grid&itemsPerPage=24&sortBy=wp/asc
1", 2", & 3" Starrett outside mikes for about $400 for all three. Another $40 or $50 for one of the more expensive threadwire sets, and you can measure any thread up to 3" diameter.
Sounds like a simple decision to me for anyone who doesn't absolutely need a thread mike like that several times a day, every day. IMNSHO, anyway. :)
Bill in OKC?
Sent from my Sprint Phone.
-------- Original message -------- From: Jody <jp4lsu@...> Date: 1/9/19 6:57 AM (GMT-06:00) Subject: Re: [atlas-craftsman IO] Internal Threading - Compound Setup
Thanks Bill and Dave, You guys are going to make me go out and by more tools aren't you? I looked at some thread micrometers last night.....Shars were pretty cheap....then I found some Mitutoyos.....YIKES!!! Would you guys suggest a Shars thread mics or thread wires? I would need a lesson on using thread wires. -Jody
|
Re: Internal Threading - Compound Setup
Technically, to make thread gauges plural.??
I was thinking of a double-ender.
Yrs, d? ?
|
Re: Internal Threading - Compound Setup
Technically, to make thread gauges plural.? You need a go and a nogo if the thread really matters like a receiver. Save time and make them on the same bar, just use your cut off tool to separate them.? You will need to create a landing zone between the two threads though.? Sneaking up on the exact size for a gauge is time consuming and you will wish you had three arms.
Charles
On Wednesday, January 9, 2019, 9:57:59 AM CST, David Beierl <dbeierl@...> wrote:
How do you use thread wires on internal threads??
Use the wires to make a plug go/no-go gauge.
Yrs, d? ?
|
Re: Internal Threading - Compound Setup
Ron, Earlier in the thread it was discussed to make a plug test piece with external threads to be used to test fit the interactive threading.? The reference to using thread wires was referring to the plug test piece.? So the wires would be used on the external threads of the test piece. Sorry for the confusion. -Jody
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-------- Original message -------- From: Ronald Mattson <mattsonrj@...> Date: 1/9/19 9:39 AM (GMT-06:00) To: [email protected] Subject: Re: [atlas-craftsman IO] Internal Threading - Compound Setup
I rarely comment, but this one has me mystified. How do you use thread wires on internal threads? Even if the wires are bent into a circle to fit inside the internal thread, you need an internal micrometer or a caliper with a blade anvils to measure the wires on a tangent. On regular calipers or micrometers, each anvil will be measuring on their two edges, so the measurement will be inaccurate on the small side. Please enlighten me. Regards, Ron Mattson
On Wednesday, January 9, 2019, 10:23:55 AM EST, Jody <jp4lsu@...> wrote:
Thanks Bill,? I think I'm going the thread wire route.? Doing a little research and digging it seems to be the method for accuracy, it's economical and versatile.
As far as mic's, I have all I need there. 0-6" mitutoyo 6-9" Starrett (single micrometer with 2 anvil inserts)
So I'll be getting some thread wire. -Jody -------- Original message -------- From: "Bill in OKC too via Groups.Io" <wmrmeyers@...> Date: 1/9/19 8:00 AM (GMT-06:00) To: [email protected] Subject: Re: [atlas-craftsman IO] Internal Threading - Compound Setup Thread wires and regular micrometers. Mitutoyo or Starrett if you like, but regular mikes. ;) They are way more versatile, and relatively speaking, cheaper, too.?
http://www.starrett.com/metrology/product-detail/585BP
$371, and only does 7,8, & 9 tpi. How often are you going to be measuring those threads?
http://www.starrett.com/metrology/metrology-products/precision-measuring-tools/micrometers/outside-micrometers#currentPage=1&displayMode=grid&itemsPerPage=24&sortBy=wp/asc
1", 2", & 3" Starrett outside mikes for about $400 for all three. Another $40 or $50 for one of the more expensive threadwire sets, and you can measure any thread up to 3" diameter.
Sounds like a simple decision to me for anyone who doesn't absolutely need a thread mike like that several times a day, every day. IMNSHO, anyway. :)
Bill in OKC?
Sent from my Sprint Phone.
-------- Original message -------- From: Jody <jp4lsu@...> Date: 1/9/19 6:57 AM (GMT-06:00) Subject: Re: [atlas-craftsman IO] Internal Threading - Compound Setup
Thanks Bill and Dave, You guys are going to make me go out and by more tools aren't you? I looked at some thread micrometers last night.....Shars were pretty cheap....then I found some Mitutoyos.....YIKES!!! Would you guys suggest a Shars thread mics or thread wires? I would need a lesson on using thread wires. -Jody
|
Re: Internal Threading - Compound Setup
How do you use thread wires on internal threads??
Use the wires to make a plug go/no-go gauge.
Yrs, d? ?
|
Re: Internal Threading - Compound Setup
I rarely comment, but this one has me mystified. How do you use thread wires on internal threads? Even if the wires are bent into a circle to fit inside the internal thread, you need an internal micrometer or a caliper with a blade anvils to measure the wires on a tangent. On regular calipers or micrometers, each anvil will be measuring on their two edges, so the measurement will be inaccurate on the small side. Please enlighten me. Regards, Ron Mattson
On Wednesday, January 9, 2019, 10:23:55 AM EST, Jody <jp4lsu@...> wrote:
Thanks Bill,? I think I'm going the thread wire route.? Doing a little research and digging it seems to be the method for accuracy, it's economical and versatile.
As far as mic's, I have all I need there. 0-6" mitutoyo 6-9" Starrett (single micrometer with 2 anvil inserts)
So I'll be getting some thread wire. -Jody
-------- Original message -------- From: "Bill in OKC too via Groups.Io" <wmrmeyers@...> Date: 1/9/19 8:00 AM (GMT-06:00) To: [email protected] Subject: Re: [atlas-craftsman IO] Internal Threading - Compound Setup Thread wires and regular micrometers. Mitutoyo or Starrett if you like, but regular mikes. ;) They are way more versatile, and relatively speaking, cheaper, too.?
http://www.starrett.com/metrology/product-detail/585BP
$371, and only does 7,8, & 9 tpi. How often are you going to be measuring those threads?
http://www.starrett.com/metrology/metrology-products/precision-measuring-tools/micrometers/outside-micrometers#currentPage=1&displayMode=grid&itemsPerPage=24&sortBy=wp/asc
1", 2", & 3" Starrett outside mikes for about $400 for all three. Another $40 or $50 for one of the more expensive threadwire sets, and you can measure any thread up to 3" diameter.
Sounds like a simple decision to me for anyone who doesn't absolutely need a thread mike like that several times a day, every day. IMNSHO, anyway. :)
Bill in OKC?
Sent from my Sprint Phone.
-------- Original message -------- From: Jody <jp4lsu@...> Date: 1/9/19 6:57 AM (GMT-06:00) Subject: Re: [atlas-craftsman IO] Internal Threading - Compound Setup
Thanks Bill and Dave, You guys are going to make me go out and by more tools aren't you? I looked at some thread micrometers last night.....Shars were pretty cheap....then I found some Mitutoyos.....YIKES!!! Would you guys suggest a Shars thread mics or thread wires? I would need a lesson on using thread wires. -Jody
|
Re: Internal Threading - Compound Setup
Thanks Bill, I think I'm going the thread wire route.? Doing a little research and digging it seems to be the method for accuracy, it's economical and versatile.
As far as mic's, I have all I need there. 0-6" mitutoyo 6-9" Starrett (single micrometer with 2 anvil inserts)
So I'll be getting some thread wire. -Jody
toggle quoted message
Show quoted text
-------- Original message -------- From: "Bill in OKC too via Groups.Io" <wmrmeyers@...> Date: 1/9/19 8:00 AM (GMT-06:00) To: [email protected] Subject: Re: [atlas-craftsman IO] Internal Threading - Compound Setup Thread wires and regular micrometers. Mitutoyo or Starrett if you like, but regular mikes. ;) They are way more versatile, and relatively speaking, cheaper, too.?
http://www.starrett.com/metrology/product-detail/585BP
$371, and only does 7,8, & 9 tpi. How often are you going to be measuring those threads?
http://www.starrett.com/metrology/metrology-products/precision-measuring-tools/micrometers/outside-micrometers#currentPage=1&displayMode=grid&itemsPerPage=24&sortBy=wp/asc
1", 2", & 3" Starrett outside mikes for about $400 for all three. Another $40 or $50 for one of the more expensive threadwire sets, and you can measure any thread up to 3" diameter.
Sounds like a simple decision to me for anyone who doesn't absolutely need a thread mike like that several times a day, every day. IMNSHO, anyway. :)
Bill in OKC?
Sent from my Sprint Phone.
-------- Original message -------- From: Jody <jp4lsu@...> Date: 1/9/19 6:57 AM (GMT-06:00) Subject: Re: [atlas-craftsman IO] Internal Threading - Compound Setup
Thanks Bill and Dave, You guys are going to make me go out and by more tools aren't you? I looked at some thread micrometers last night.....Shars were pretty cheap....then I found some Mitutoyos.....YIKES!!! Would you guys suggest a Shars thread mics or thread wires? I would need a lesson on using thread wires. -Jody
|
Can we change the subject line of the conversation, if we are no longer on the live center topic? Can this be done? My Outlook does not allow me to change message subject line.
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Dave,
I am about 5 miles north of Bloomington-Normal, just a couple of hours away.
Dave Matticks wrote:
Where in Illinois are you?
I'm about 5 miles straight South? of O'Hare.?
Dave?
Sent from my T-Mobile 4G LTE Device
-------- Original message --------
Date: 1/9/19 05:43 (GMT-06:00)
Subject: Re: [atlas-craftsman IO] Royal live center
Dave,
Unfortunately most of the high schools around here (Illinois) have closed their shops and most community colleges don't offer any machining classes either. Unless you can find an old machinist to take you under
his wing, YouTube is about your only option.
Bruce Monson
Sent from my phone, sorry for any misspelling and inappropriate autocorrect.
Where my son teaches there are two campuses,? East and West Leyden high schools.
He's primarily at East but is chairman of the department at both.
This includes machine shop, wood shop, auto shop and construction!
East has had a machine shop forever,? they just opened a brand new one at West a couple years ago. Very nice!
Manual and CNC. Turning, milling, a little surface grinding and while not really an official part of the curriculum, welding.?
He's got a pretty solid background, used to work with me part time while in HS and full time prior to the air force.?
Now he's an "aircraft metal technician" in the air national guard.?
Classes are pretty full and he comes up with a lot of cool projects to keep up the interest!?
He works with a lot of local shops that will hire a kid tomorrow with his recommendation.?
It's all good.?
Dave?
Sent from my T-Mobile 4G LTE Device
-------- Original message --------
Date: 1/7/19 19:59 (GMT-06:00)
Subject: Re: [atlas-craftsman IO] Royal live center
it sure is good to know that there are still "machine shop"
class's being taught today
??? ??? I went to hi school with both sieves,? Wozniak & jobs& several
years back they totally demo's all of the shop classes , they have a
computer science class & I hear a new maker space . the auto shop,wood shop,
??? ??? electronics class metal shop & mech drawing were all shi*canned
, talk about progress, surprised they don't' have any computer game
classes to help the students advance at game playin!!!!!!!!!
??? ??? tks for the center lesson if i get done with all the snow we
got I'll head out to the shop tomorrow & give mine a try . I have a old
Craftsman with terrible bearings
??? ??? animal
On 1/6/2019 6:52 AM, Dave Matticks wrote:
Hi Bill,
Here we go.
It's not real obvious how to take these guys apart as you may have
noticed!
I drilled and tapped two 10-32 holes in the front cover plate and used
a slide hammer to pull it out, not necessary as that didn't really
help in the end and I had to make a new replacement!
Anyway, the od of the point on mine is around .740. Put a 3/4" shaft
collar on it leaving a gap between that and the body and use 2
screwdrivers/ pry bars, whatever to extract the tip.
The shank is separate, use maybe a 1/2" diameter pin to push that out.
I used my 10 ton Dake screw press, it's on a taper so when it pops,
it's out. Put a box of rags or something under it so it doesn't get
damaged.
Then flip it over and use something around 5/8" diameter to press out
the bearing along with the front cover. Easy!
It uses a double row angular contact bearing, 3202 I believe. I was
able to remove the cages intact for a good cleaning.
Old hardened grease was the problem. Looks almost new and runs like new.
Polish everything up and put it back together. I first used NLGI #2,
had to do it again, too much drag so I switched to a Lithium #1. Shell
Gadus S3 V220C1 to be exact, couple dollars at McMaster. I love that
place and they're about 2 miles from my house! Don't use white lithium
and don't over pack.
My youngest son was USAF, now he's Air National Guard and a high
school "industrial technology" teacher, AKA machine shop.
Hope this helps.
Dave
|
Dave,
I am about 5 miles north of Bloomington-Normal, just a couple of hours away.
Dave Matticks wrote:
toggle quoted message
Show quoted text
Where in Illinois are you?
I'm about 5 miles straight South? of O'Hare.?
Dave?
Sent from my T-Mobile 4G LTE Device
-------- Original message --------
Date: 1/9/19 05:43 (GMT-06:00)
Subject: Re: [atlas-craftsman IO] Royal live center
Dave,
Unfortunately most of the high schools around here (Illinois) have closed their shops and most community colleges don't offer any machining classes either. Unless you can find an old machinist to take you under
his wing, YouTube is about your only option.
Bruce Monson
Sent from my phone, sorry for any misspelling and inappropriate autocorrect.
Where my son teaches there are two campuses,? East and West Leyden high schools.
He's primarily at East but is chairman of the department at both.
This includes machine shop, wood shop, auto shop and construction!
East has had a machine shop forever,? they just opened a brand new one at West a couple years ago. Very nice!
Manual and CNC. Turning, milling, a little surface grinding and while not really an official part of the curriculum, welding.?
He's got a pretty solid background, used to work with me part time while in HS and full time prior to the air force.?
Now he's an "aircraft metal technician" in the air national guard.?
Classes are pretty full and he comes up with a lot of cool projects to keep up the interest!?
He works with a lot of local shops that will hire a kid tomorrow with his recommendation.?
It's all good.?
Dave?
Sent from my T-Mobile 4G LTE Device
-------- Original message --------
Date: 1/7/19 19:59 (GMT-06:00)
Subject: Re: [atlas-craftsman IO] Royal live center
it sure is good to know that there are still "machine shop"
class's being taught today
??? ??? I went to hi school with both sieves,? Wozniak & jobs& several
years back they totally demo's all of the shop classes , they have a
computer science class & I hear a new maker space . the auto shop,wood shop,
??? ??? electronics class metal shop & mech drawing were all shi*canned
, talk about progress, surprised they don't' have any computer game
classes to help the students advance at game playin!!!!!!!!!
??? ??? tks for the center lesson if i get done with all the snow we
got I'll head out to the shop tomorrow & give mine a try . I have a old
Craftsman with terrible bearings
??? ??? animal
On 1/6/2019 6:52 AM, Dave Matticks wrote:
Hi Bill,
Here we go.
It's not real obvious how to take these guys apart as you may have
noticed!
I drilled and tapped two 10-32 holes in the front cover plate and used
a slide hammer to pull it out, not necessary as that didn't really
help in the end and I had to make a new replacement!
Anyway, the od of the point on mine is around .740. Put a 3/4" shaft
collar on it leaving a gap between that and the body and use 2
screwdrivers/ pry bars, whatever to extract the tip.
The shank is separate, use maybe a 1/2" diameter pin to push that out.
I used my 10 ton Dake screw press, it's on a taper so when it pops,
it's out. Put a box of rags or something under it so it doesn't get
damaged.
Then flip it over and use something around 5/8" diameter to press out
the bearing along with the front cover. Easy!
It uses a double row angular contact bearing, 3202 I believe. I was
able to remove the cages intact for a good cleaning.
Old hardened grease was the problem. Looks almost new and runs like new.
Polish everything up and put it back together. I first used NLGI #2,
had to do it again, too much drag so I switched to a Lithium #1. Shell
Gadus S3 V220C1 to be exact, couple dollars at McMaster. I love that
place and they're about 2 miles from my house! Don't use white lithium
and don't over pack.
My youngest son was USAF, now he's Air National Guard and a high
school "industrial technology" teacher, AKA machine shop.
Hope this helps.
Dave
|
Re: Internal Threading - Compound Setup
Thread wires and regular micrometers. Mitutoyo or Starrett if you like, but regular mikes. ;) They are way more versatile, and relatively speaking, cheaper, too.?
http://www.starrett.com/metrology/product-detail/585BP
$371, and only does 7,8, & 9 tpi. How often are you going to be measuring those threads?
http://www.starrett.com/metrology/metrology-products/precision-measuring-tools/micrometers/outside-micrometers#currentPage=1&displayMode=grid&itemsPerPage=24&sortBy=wp/asc
1", 2", & 3" Starrett outside mikes for about $400 for all three. Another $40 or $50 for one of the more expensive threadwire sets, and you can measure any thread up to 3" diameter.
Sounds like a simple decision to me for anyone who doesn't absolutely need a thread mike like that several times a day, every day. IMNSHO, anyway. :)
Bill in OKC?
Sent from my Sprint Phone.
toggle quoted message
Show quoted text
-------- Original message -------- From: Jody <jp4lsu@...> Date: 1/9/19 6:57 AM (GMT-06:00) Subject: Re: [atlas-craftsman IO] Internal Threading - Compound Setup
Thanks Bill and Dave, You guys are going to make me go out and by more tools aren't you? I looked at some thread micrometers last night.....Shars were pretty cheap....then I found some Mitutoyos.....YIKES!!! Would you guys suggest a Shars thread mics or thread wires? I would need a lesson on using thread wires. -Jody
|
Where in Illinois are you? I'm about 5 miles straight South? of O'Hare.? Dave?
Sent from my T-Mobile 4G LTE Device
toggle quoted message
Show quoted text
-------- Original message -------- From: bmonson61 <bmonson61@...> Date: 1/9/19 05:43 (GMT-06:00) Subject: Re: [atlas-craftsman IO] Royal live center
Dave,
Unfortunately most of the high schools around here (Illinois) have closed their shops and most community colleges don't offer any machining classes either. Unless you can find an old machinist to take you under his wing, YouTube is about your only option.
Bruce Monson
bmonson61@...
Sent from my phone, sorry for any misspelling and inappropriate autocorrect.
Where my son teaches there are two campuses,? East and West Leyden high schools.
He's primarily at East but is chairman of the department at both.
This includes machine shop, wood shop, auto shop and construction!
East has had a machine shop forever,? they just opened a brand new one at West a couple years ago. Very nice!
Manual and CNC. Turning, milling, a little surface grinding and while not really an official part of the curriculum, welding.?
He's got a pretty solid background, used to work with me part time while in HS and full time prior to the air force.?
Now he's an "aircraft metal technician" in the air national guard.?
Classes are pretty full and he comes up with a lot of cool projects to keep up the interest!?
He works with a lot of local shops that will hire a kid tomorrow with his recommendation.?
It's all good.?
Dave?
Sent from my T-Mobile 4G LTE Device
-------- Original message --------
From: mike allen <animal@...>
Date: 1/7/19 19:59 (GMT-06:00)
Subject: Re: [atlas-craftsman IO] Royal live center
it sure is good to know that there are still "machine shop"
class's being taught today
??? ??? I went to hi school with both sieves,? Wozniak & jobs& several
years back they totally demo's all of the shop classes , they have a
computer science class & I hear a new maker space . the auto shop,wood shop,
??? ??? electronics class metal shop & mech drawing were all shi*canned
, talk about progress, surprised they don't' have any computer game
classes to help the students advance at game playin!!!!!!!!!
??? ??? tks for the center lesson if i get done with all the snow we
got I'll head out to the shop tomorrow & give mine a try . I have a old
Craftsman with terrible bearings
??? ??? animal
On 1/6/2019 6:52 AM, Dave Matticks wrote:
Hi Bill,
Here we go.
It's not real obvious how to take these guys apart as you may have
noticed!
I drilled and tapped two 10-32 holes in the front cover plate and used
a slide hammer to pull it out, not necessary as that didn't really
help in the end and I had to make a new replacement!
Anyway, the od of the point on mine is around .740. Put a 3/4" shaft
collar on it leaving a gap between that and the body and use 2
screwdrivers/ pry bars, whatever to extract the tip.
The shank is separate, use maybe a 1/2" diameter pin to push that out.
I used my 10 ton Dake screw press, it's on a taper so when it pops,
it's out. Put a box of rags or something under it so it doesn't get
damaged.
Then flip it over and use something around 5/8" diameter to press out
the bearing along with the front cover. Easy!
It uses a double row angular contact bearing, 3202 I believe. I was
able to remove the cages intact for a good cleaning.
Old hardened grease was the problem. Looks almost new and runs like new.
Polish everything up and put it back together. I first used NLGI #2,
had to do it again, too much drag so I switched to a Lithium #1. Shell
Gadus S3 V220C1 to be exact, couple dollars at McMaster. I love that
place and they're about 2 miles from my house! Don't use white lithium
and don't over pack.
My youngest son was USAF, now he's Air National Guard and a high
school "industrial technology" teacher, AKA machine shop.
Hope this helps.
Dave
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Re: Internal Threading - Compound Setup
Bill,
Are you happy with PD thread wires?
It says made in the USA by Fischer Scientific.? No reviews on Amazon yet.?? The Brown & Sharpe thread wires on Amazon don't have very good reviews.? Its sad to see companies like B&S go downhill on quality.? i've seen bad reviews on several of their products I thought about buying.
-Jody
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Re: Internal Threading - Compound Setup
Go shars, unless it is for a money making enterprise you are buying it for
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Thanks Bill and Dave,
You guys are going to make me go out and by more tools aren't you?
I looked at some thread micrometers last night.....Shars were pretty cheap....then I found some Mitutoyos.....YIKES!!!
Would you guys suggest a Shars thread mics or thread wires?
I would need a lesson on using thread wires.
-Jody
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Bill in OKC too