Date   

Re: stuck chuck

eddie.draper@btinternet.com
 

Me too!  Also, I note that the illustrated machine has V belt drive and there appeares to be a gap between the pulley and the gear.  Our 14.5" has flat belt and no gap.  Ideas anyone?  I have a rather seriously stuck chuck at present, as it started to unscrew when I switched off, so to prevent it going flying, I switched back on again rather hurriedly and it seated in place with a significant bang.

I would caution against using the front diaphragm of the headstock casing as a reaction point, as it is a rather thin casting.  Whatever you do, keep the forces acting dead in line through it and do not drive a wedge between it and the bull gear, or you may fracture it out.  The dog for the bull gear to mandrel connection on the 14.5" is on the outer end, and the only exposed part is a rather slender handle that I would hesitate to use for this.

Hoping to upgrade to a similar size machine with Camlock!

Eddie


On Sunday, 12 January 2020, 19:14:49 GMT, Steven Schlegel <sc.schlegel@...> wrote:


Is the shaft square in that area, or do you get leverage off the pin? I am trying to figure out how it works.

Steven


From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of Chips <sakr4360@...>
Sent: Sunday, January 12, 2020 9:21:36 AM
To: SouthBendLathe@groups.io <SouthBendLathe@groups.io>
Subject: Re: [SouthBendLathe] stuck chuck
 
Newb here, first post.
Mine was stuck when I got it due to sitting for 20+ years and yes I broke a tooth on the back gear.
Make one of these from 1/4 thick plate then put it on the bull gear opposite side of the little push pin that engages the pulley. Then you can crank on the chuck.
You can thank me later.


Machining Lathe - general for sale - by owner on Craigslist Jersey Shore

George Meinschein
 

Hey all,
FYI-This 16" x 8' UMD lathe has been on Craigslist for a while now. $995. I have no idea as to it's condition other than what the ad says, but I can see that it has a micrometer stop, taper attachment, and thread dial. 

https://jerseyshore.craigslist.org/for/d/farmingdale-machining-lathe/7035785759.html

Thanks,
George H. Meinschein, P.E.

Meinschein Engineering Consultants, LLC
150 Brittany Drive
Freehold, NJ 07728-1500

Email: george.meinschein@...
Direct Dial: 732-409-0778
Cell: 732-580-1736
Fax: 732-358-0369
www.meinscheinengineering.com

   


Re: stuck chuck

Steven Schlegel
 

Is the shaft square in that area, or do you get leverage off the pin? I am trying to figure out how it works.

Steven


From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of Chips <sakr4360@...>
Sent: Sunday, January 12, 2020 9:21:36 AM
To: SouthBendLathe@groups.io <SouthBendLathe@groups.io>
Subject: Re: [SouthBendLathe] stuck chuck
 
Newb here, first post.
Mine was stuck when I got it due to sitting for 20+ years and yes I broke a tooth on the back gear.
Make one of these from 1/4 thick plate then put it on the bull gear opposite side of the little push pin that engages the pulley. Then you can crank on the chuck.
You can thank me later.


Re: stuck chuck

Chips
 

Newb here, first post.
Mine was stuck when I got it due to sitting for 20+ years and yes I broke a tooth on the back gear.
Make one of these from 1/4 thick plate then put it on the bull gear opposite side of the little push pin that engages the pulley. Then you can crank on the chuck.
You can thank me later.


Re: stuck chuck

Rick Watson
 

If you click on “View/Reply Online” in this mail, login to the web page, then click “PHOTOS” on the web page, then “Emailed Photos”, you’ll see the photos, at least I do.

 

https://groups.io/g/SouthBendLathe/album?id=0

 

https://groups.io/g/SouthBendLathe/photo/0/0?p=Created,,,20,2,0,0

 

 


Re: stuck chuck

Jon Holmes <j_sholmes@...>
 

The cause of most broken back gears too!


Re: stuck chuck

houdini
 

best way to break teeth on a gear or both gears!!

On Saturday, January 11, 2020, 12:10:02 PM EST, Ondrej Krejci via Groups.Io <okrejci@...> wrote:


Greetings,

Have you tried tapping on the chuck key or a jaw with a mallet or a large chunk of soft metal while in back gear?  This is the recommended method for removing screw-on chucks.

Good Luck,


OK


Re: stuck chuck

Ondrej Krejci
 

Recommended by whom?  Clausing Corp., makers of Atlas and Clausing lathes in their manuals.


Re: stuck chuck

Bill in OKC too
 

Yes! Got it figured out?

Bill in OKC

William R. Meyers, MSgt, USAF(Ret.)


A human being should be able to change a diaper, plan an invasion,
butcher a hog, conn a ship, design a building, write a sonnet, balance
accounts, build a wall, set a bone, comfort the dying, take orders,
give orders, cooperate, act alone, solve equations, analyze a new
problem, pitch manure, program a computer, cook a tasty meal, fight
efficiently, die gallantly. Specialization is for insects.
LAZARUS LONG (Robert A. Heinlein)





On Saturday, January 11, 2020, 09:53:42 PM CST, William Nelson <wnnelson@...> wrote:



Do I have a picture now?


Re: stuck chuck

William Nelson
 

Ok I did a reply to group instead of going to the group site. Anyway it just bolts on the belt journal. Better late than never?


Re: stuck chuck

Thomas Tallant
 

Yes you do

On Sat, Jan 11, 2020 at 7:53 PM William Nelson <wnnelson@...> wrote:

Do I have a picture now?


Re: stuck chuck

William Nelson
 


Do I have a picture now?


Re: stuck chuck

mike allen
 

        ya should always clean both the chuck & spindle threads when changing chucks . I always put a drop or 2 of oil on the threads when changing . not sayin I've never had a stuck chuck , but it's been quite a long while

        ( knockin on wood ! )

        animal


On 1/11/2020 2:25 PM, Steven Karvelis wrote:
Thank you all for the input and advice. This afternoon I got that stuck chuck unstuck! MrPete222 tip #281 onYou Tube has some good advice. Chucking up some hex stock in the chuck and using an impact gun to jolt things free without the spindle having to suffer undue stress or punishment from other methods. When I said the chuck was stuck I mean it was "STUCK"! I was able to use a hardwoow wedge to lock the spindle in place and even at that tthe initial attemps to free the chuck were disheartning. I drove the wedge in further turned the power setting on my 1/2"pneumatic impact gun to full and went at it again. The chuck finally came free. I have no idea what caused this situation because nothing of this magnitude has ever happened before.

A plausible hypothisis is I had been workin with some large 2"diameter stock, preping it for a project, facing, drilling and tapping both ends.  The forces generated naturally tighten the chuck on the spindle. Now my macine is in my garage and there have been some extremes in the weather over a short period of time, i.e. 85 to 90 in the day,tempertures dropping to low 50's to upper 40's at night. Maybe this had a collective effect on the chuck being so tight on the spindle. As I said before in the 40 plus years that i have owned this lathe I have never had a problem with the chuck being so tight that I couldn't lock up the spindle and give the chuck a tug with the chuck key and having it come loose. Thank you all again, "good turnings".

Sincerely,

Steve K


Re: stuck chuck

Steven Karvelis
 

Thank you all for the input and advice. This afternoon I got that stuck chuck unstuck! MrPete222 tip #281 onYou Tube has some good advice. Chucking up some hex stock in the chuck and using an impact gun to jolt things free without the spindle having to suffer undue stress or punishment from other methods. When I said the chuck was stuck I mean it was "STUCK"! I was able to use a hardwoow wedge to lock the spindle in place and even at that tthe initial attemps to free the chuck were disheartning. I drove the wedge in further turned the power setting on my 1/2"pneumatic impact gun to full and went at it again. The chuck finally came free. I have no idea what caused this situation because nothing of this magnitude has ever happened before.

A plausible hypothisis is I had been workin with some large 2"diameter stock, preping it for a project, facing, drilling and tapping both ends.  The forces generated naturally tighten the chuck on the spindle. Now my macine is in my garage and there have been some extremes in the weather over a short period of time, i.e. 85 to 90 in the day,tempertures dropping to low 50's to upper 40's at night. Maybe this had a collective effect on the chuck being so tight on the spindle. As I said before in the 40 plus years that i have owned this lathe I have never had a problem with the chuck being so tight that I couldn't lock up the spindle and give the chuck a tug with the chuck key and having it come loose. Thank you all again, "good turnings".

Sincerely,

Steve K


Re: stuck chuck

Mark R. Jonkman
 

I had a stuck chuck once and no matter what I tried I could not get it unstuck. If memory serves me correct I made a clamp out of a block is steel and bored a hole with the mill to fit over the rear end of the spindle. I made a 1/8” slit and drilled and counter bored and tapped a hole that 90 degrees to the slit and welded a chunk of steel rod to that for leverage. Then I could tighten the bolt and have it clamp down hard on the rear of the spindle. 

I tried everything mentioned here accept heating with torch as I didn’t have one. 

After several evenings of trying I gave up and machined it off and bought a new backing plate for $100 and went on my not so merry way. 

I did it the hard way cutting off the plate and machining down till the tips of the threads were almost visible - they showed as a shadow on the casting. Stopped the lathe and it unscrewed very easily having relieved all the pressure. In hindsight if it ever happened again I wrote down length of spindle register so I could just carefully part off till tip of thread showed. It just needs to release pressure.

I lucked out and picked up a almost brand new south bend fourteen from a used equipment dealer a short time later and sold my heavy 10. New lathe has a d1-3 spindle. I’ll never go back to a threaded spindle if I can help it 😀

Mark


On Jan 10, 2020, at 6:41 PM, John Losch <johnlosch32@...> wrote:

To all,

I meant to include “Houdini’s” advice in my suggestion below.  Main thing: don’t use the headstock gears as a “lock” of the spindle, and rocking or repeated leverage, rather than shock will usually release a stuck chuck.

Jcl

On Jan 10, 2020, at 6:26 PM, John Losch via Groups.Io <johnlosch32@...> wrote:

Bill, and all,

Bill’s advice has worked for me on the two or three occasions where I encountered a “chuck problem.”  This includes my antique 14” 1912 Whitcome-Blaisdell lathe with a Horton 3-jaw chuck supposedly dating back to the civil war.  Don’t make unreasonable demands of a precision headstock to remove a stubborn chuck.  Plot before you plunge!



On Jan 10, 2020, at 4:40 PM, Bill in OKC too via Groups.Io <wmrmeyers@...> wrote:

find a chunk of hex stock, big allen wrench would work, clamp it in the jaws of the chuck, and use a wrench to break it loose. May want to use a deadblow hammer, or big rubber mallet to whack the wrench.

Use tension on the belts to hold the spindle from turning, would be my advise.

HTH!

Bill in OKC

William R. Meyers, MSgt, USAF(Ret.)


A human being should be able to change a diaper, plan an invasion,
butcher a hog, conn a ship, design a building, write a sonnet, balance
accounts, build a wall, set a bone, comfort the dying, take orders,
give orders, cooperate, act alone, solve equations, analyze a new
problem, pitch manure, program a computer, cook a tasty meal, fight
efficiently, die gallantly. Specialization is for insects.
LAZARUS LONG (Robert A. Heinlein)




On Friday, January 10, 2020, 3:23:45 PM CST, Steven Karvelis <steven_karvelis@...> wrote:


Hello everyone, I was making some improvements to the Harbor Freight drill pump and was going to change over to my 4 jaw chuck. Normally I would engage the back gear spindle insert my chuck key into it's socket and the chuck would come loose.Well not this time, I even put a piece of 3/4" round stock in the jaws for a little more leverage but no luck, wouldn't budge. My machine is a SB 9A with 48" bed. Anyone out there ever have a problem like this, any suggestions? I have a strap wrench but I'm not sure if I will gain any more leverage. Any ideas or suggestions would be greatly appreciated.

Sincerely,

Steve K



Re: stuck chuck

jonwoellhaf
 

“Have you tried tapping on the chuck key or a jaw with a mallet or a large chunk of soft metal while in back gear?  This is the recommended method for removing screw-on chucks.”
Recommended by whom? Sellers of replacement gears?


Re: stuck chuck

Ondrej Krejci
 

Greetings,

Have you tried tapping on the chuck key or a jaw with a mallet or a large chunk of soft metal while in back gear?  This is the recommended method for removing screw-on chucks.

Good Luck,


OK


Re: stuck chuck

Danny Stover
 

Well, I'm glad I'm not the only one that can't see them.




On Saturday, January 11, 2020 Bill in OKC too via Groups.Io <SouthBendLathe@groups.io> wrote:

Can't swear you didn't, but I can't see them. I have Yahoo mail, and it's quite possible they're getting as flaky as Yahoo groups did.

I would be interested in seeing them, if you want to try again. Can't swear it will help, either.

Bill in OKC

William R. Meyers, MSgt, USAF(Ret.)


A human being should be able to change a diaper, plan an invasion,
butcher a hog, conn a ship, design a building, write a sonnet, balance
accounts, build a wall, set a bone, comfort the dying, take orders,
give orders, cooperate, act alone, solve equations, analyze a new
problem, pitch manure, program a computer, cook a tasty meal, fight
efficiently, die gallantly. Specialization is for insects.
LAZARUS LONG (Robert A. Heinlein)




On Friday, January 10, 2020, 10:54:43 PM CST, William Nelson <wnnelson@...> wrote:


Hmmmmmm I see the photos fine. The loss bar went all the way before I said add.


Re: stuck chuck

Bill in OKC too
 

Can't swear you didn't, but I can't see them. I have Yahoo mail, and it's quite possible they're getting as flaky as Yahoo groups did.

I would be interested in seeing them, if you want to try again. Can't swear it will help, either.

Bill in OKC

William R. Meyers, MSgt, USAF(Ret.)


A human being should be able to change a diaper, plan an invasion,
butcher a hog, conn a ship, design a building, write a sonnet, balance
accounts, build a wall, set a bone, comfort the dying, take orders,
give orders, cooperate, act alone, solve equations, analyze a new
problem, pitch manure, program a computer, cook a tasty meal, fight
efficiently, die gallantly. Specialization is for insects.
LAZARUS LONG (Robert A. Heinlein)




On Friday, January 10, 2020, 10:54:43 PM CST, William Nelson <wnnelson@...> wrote:


Hmmmmmm I see the photos fine. The loss bar went all the way before I said add.


Re: stuck chuck

William Nelson
 

Hmmmmmm I see the photos fine. The loss bar went all the way before I said add.