Pulling very large gears
 

I am eyeing a job that would involve pulling large gears off their
shafts. Gears are 3ft in diameter and some may be even 4ft.

This being the United States of America, I am sure that commercial
solutions have been developed for that kind of thing. I wonder what
sort of places should I call to rent some big gear pullers?

i

Pulling very large gears
 

Ignoramus7394 wrote:

I am eyeing a job that would involve pulling large gears off their
shafts. Gears are 3ft in diameter and some may be even 4ft.

This being the United States of America, I am sure that commercial
solutions have been developed for that kind of thing. I wonder what
sort of places should I call to rent some big gear pullers?

Wow!

I've not worked that size range. But as gears and pulleys get large, pulling
them by spanning their entire diameter becomes problematic.

Are there any threaded holes near the shaft boss? Or access between spokes
or 'lightening holes' where one might use a smaller puller? I'd be afraid of
bending the gear by pulling on the periphery.

I'd look for something like this:

http://www.lawndaleforge.com/large-i...r-set-with.jpg

and try to get hold of the gear as close to the shaft boss as possible.

--
Paul Hovnanian
------------------------------------------------------------------
I have the key to happiness. But they just changed the locks.

Pulling very large gears
 

On Wednesday, June 17, 2015 at 3:26:17 PM UTC-4, Ignoramus7394 wrote:
I am eyeing a job that would involve pulling large gears off their
shafts. Gears are 3ft in diameter and some may be even 4ft.

This being the United States of America, I am sure that commercial
solutions have been developed for that kind of thing. I wonder what
sort of places should I call to rent some big gear pullers?

i


You might tell us a bit more. If you are trying to remove the gears so they can be used again, that is one thing. If you are going to sell them as scrap metal , that is another.

One option is to cut the shafts with a oxyacet torch and never pull the gears at all.

Dan

Pulling very large gears
 

On 2015-06-17, wrote:
On Wednesday, June 17, 2015 at 3:26:17 PM UTC-4, Ignoramus7394 wrote:
I am eyeing a job that would involve pulling large gears off their
shafts. Gears are 3ft in diameter and some may be even 4ft.

This being the United States of America, I am sure that commercial
solutions have been developed for that kind of thing. I wonder what
sort of places should I call to rent some big gear pullers?

i


You might tell us a bit more. If you are trying to remove the gears
so they can be used again, that is one thing. If you are going to
sell them as scrap metal , that is another.

One option is to cut the shafts with a oxyacet torch and never pull the gears at all.


I cannot cut the shafts. It involves moving a machine for a
customer. He wants some gears and does not want other gears, but he
wants the shafts.

i

Pulling very large gears
 

"Ignoramus7394" wrote in message
...
On 2015-06-17, wrote:
On Wednesday, June 17, 2015 at 3:26:17 PM UTC-4, Ignoramus7394 wrote:
I am eyeing a job that would involve pulling large gears off their
shafts. Gears are 3ft in diameter and some may be even 4ft.

This being the United States of America, I am sure that commercial
solutions have been developed for that kind of thing. I wonder what
sort of places should I call to rent some big gear pullers?

i


You might tell us a bit more. If you are trying to remove the gears
so they can be used again, that is one thing. If you are going to
sell them as scrap metal , that is another.

One option is to cut the shafts with a oxyacet torch and never pull the
gears at all.


I cannot cut the shafts. It involves moving a machine for a
customer. He wants some gears and does not want other gears, but he
wants the shafts.

i

Try Ahern. 50 ton porta power should pry them off without damage.

http://www.ahern.com/

Best Regards
Tom.

Pulling very large gears
 

On Wednesday, June 17, 2015 at 4:34:35 PM UTC-4, Ignoramus7394 wrote:


I cannot cut the shafts. It involves moving a machine for a
customer. He wants some gears and does not want other gears, but he
wants the shafts.

i

I have no idea of where to rent gear pullers of that size. There might be such a place, but I kind of doubt it. I expect you are going to have to jury rig something using some I beams, heavy chain , and a hydraulic jack. Penetrating oil and warming up the gears will help. Liquid nitrogen on the shafts will also help. Your local welding supply can help with the LN.

Dan

Pulling very large gears
 

"Howard Beal" wrote in message
...

"Ignoramus7394" wrote in message
...
On 2015-06-17, wrote:
On Wednesday, June 17, 2015 at 3:26:17 PM UTC-4, Ignoramus7394 wrote:
I am eyeing a job that would involve pulling large gears off their
shafts. Gears are 3ft in diameter and some may be even 4ft.

This being the United States of America, I am sure that commercial
solutions have been developed for that kind of thing. I wonder what
sort of places should I call to rent some big gear pullers?

i


You might tell us a bit more. If you are trying to remove the gears
so they can be used again, that is one thing. If you are going to
sell them as scrap metal , that is another.

One option is to cut the shafts with a oxyacet torch and never pull the
gears at all.


I cannot cut the shafts. It involves moving a machine for a
customer. He wants some gears and does not want other gears, but he
wants the shafts.

i

Try Ahern. 50 ton porta power should pry them off without damage.

http://www.ahern.com/

Best Regards
Tom.

Probably not that much, but you never know. My biggest concern would be
handling the gears as they come off. A forklift positioned just right might
help, but if the gear turns it could still fall catastrophically.

Pulling very large gears
 

On 2015-06-17, Bob La Londe wrote:

"Howard Beal" wrote in message
...

"Ignoramus7394" wrote in message
...
On 2015-06-17, wrote:
On Wednesday, June 17, 2015 at 3:26:17 PM UTC-4, Ignoramus7394 wrote:
I am eyeing a job that would involve pulling large gears off their
shafts. Gears are 3ft in diameter and some may be even 4ft.

This being the United States of America, I am sure that commercial
solutions have been developed for that kind of thing. I wonder what
sort of places should I call to rent some big gear pullers?

i


You might tell us a bit more. If you are trying to remove the gears
so they can be used again, that is one thing. If you are going to
sell them as scrap metal , that is another.

One option is to cut the shafts with a oxyacet torch and never pull the
gears at all.


I cannot cut the shafts. It involves moving a machine for a
customer. He wants some gears and does not want other gears, but he
wants the shafts.

i

Try Ahern. 50 ton porta power should pry them off without damage.

http://www.ahern.com/

Best Regards
Tom.

Probably not that much, but you never know. My biggest concern would be
handling the gears as they come off. A forklift positioned just right might
help, but if the gear turns it could still fall catastrophically.




Good point.

I would definitely suspend the gear on a strap before pulling.

Pulling very large gears
 

"Bob La Londe" wrote in message
...

"Howard Beal" wrote in message
...

"Ignoramus7394" wrote in message
...
On 2015-06-17, wrote:
On Wednesday, June 17, 2015 at 3:26:17 PM UTC-4, Ignoramus7394 wrote:
I am eyeing a job that would involve pulling large gears off their
shafts. Gears are 3ft in diameter and some may be even 4ft.

This being the United States of America, I am sure that commercial
solutions have been developed for that kind of thing. I wonder what
sort of places should I call to rent some big gear pullers?

i


You might tell us a bit more. If you are trying to remove the gears
so they can be used again, that is one thing. If you are going to
sell them as scrap metal , that is another.

One option is to cut the shafts with a oxyacet torch and never pull the
gears at all.


I cannot cut the shafts. It involves moving a machine for a
customer. He wants some gears and does not want other gears, but he
wants the shafts.

i

Try Ahern. 50 ton porta power should pry them off without damage.

http://www.ahern.com/

Best Regards
Tom.

Probably not that much, but you never know. My biggest concern would be
handling the gears as they come off. A forklift positioned just right
might help, but if the gear turns it could still fall catastrophically.


Depending on the gear ( spokes or solid ) the rigging is fairley simple with
igy's big forklift. The big problem is gonna be overcoming the sticktion
between the shaft and the gear bore.

Best Regards
Tom.

Pulling very large gears
 

On 2015-06-17, Howard Beal wrote:

"Bob La Londe" wrote in message
...

"Howard Beal" wrote in message
...

"Ignoramus7394" wrote in message
...
On 2015-06-17, wrote:
On Wednesday, June 17, 2015 at 3:26:17 PM UTC-4, Ignoramus7394 wrote:
I am eyeing a job that would involve pulling large gears off their
shafts. Gears are 3ft in diameter and some may be even 4ft.

This being the United States of America, I am sure that commercial
solutions have been developed for that kind of thing. I wonder what
sort of places should I call to rent some big gear pullers?

i


You might tell us a bit more. If you are trying to remove the gears
so they can be used again, that is one thing. If you are going to
sell them as scrap metal , that is another.

One option is to cut the shafts with a oxyacet torch and never pull the
gears at all.


I cannot cut the shafts. It involves moving a machine for a
customer. He wants some gears and does not want other gears, but he
wants the shafts.

i

Try Ahern. 50 ton porta power should pry them off without damage.

http://www.ahern.com/

Best Regards
Tom.

Probably not that much, but you never know. My biggest concern would be
handling the gears as they come off. A forklift positioned just right
might help, but if the gear turns it could still fall catastrophically.


Depending on the gear ( spokes or solid ) the rigging is fairley simple with
igy's big forklift. The big problem is gonna be overcoming the sticktion
between the shaft and the gear bore.

Right. Those gears do not need a big forklift. A 5,000 lbs forklift
would be just fine to suspend the gear on a choked strap.

i

Pulling very large gears
 

On Wed, 17 Jun 2015 14:26:14 -0500, Ignoramus7394
wrote:

I am eyeing a job that would involve pulling large gears off their
shafts. Gears are 3ft in diameter and some may be even 4ft.

This being the United States of America, I am sure that commercial
solutions have been developed for that kind of thing. I wonder what
sort of places should I call to rent some big gear pullers?

i
Years ago I had to pull some large diameter flat belt pulleys off of
their shafts and at first it was not obvious what was holding the
pulleys on. It turned out that they were held in place with tapered
keys. I don't remember if it was the keyseats in the shafts or the
pulleys were tapered to match the key. Anyway, the keys weren't just
a straight taper, at the big end there was a step. After the key was
installed you could pound on or pry against this step to remove the
key as it was taller than the rest of the key. I think this type of
key is called a "Gib Head" key. So if the big gears you are going to
pull don't have any obvious clamping feature it may be they have the
tapered keys.
Eric

Pulling very large gears
 

Ignoramus7394 wrote:
I am eyeing a job that would involve pulling large gears off their
shafts. Gears are 3ft in diameter and some may be even 4ft.

This being the United States of America, I am sure that commercial
solutions have been developed for that kind of thing. I wonder what
sort of places should I call to rent some big gear pullers?

no answer to this, but did you make it to the Wisco openhouse last week?

There was quite a bit of welding and cutting equipment to play with.

Pulling very large gears
 

On 2015-06-18, Cydrome Leader wrote:
Ignoramus7394 wrote:
I am eyeing a job that would involve pulling large gears off their
shafts. Gears are 3ft in diameter and some may be even 4ft.

This being the United States of America, I am sure that commercial
solutions have been developed for that kind of thing. I wonder what
sort of places should I call to rent some big gear pullers?

no answer to this, but did you make it to the Wisco openhouse last week?

There was quite a bit of welding and cutting equipment to play with.



I did not, unfortunately...

i

Pulling very large gears
 

On 6/17/2015 3:26 PM, Ignoramus7394 wrote:
I am eyeing a job that would involve pulling large gears off their
shafts. Gears are 3ft in diameter and some may be even 4ft.

This being the United States of America, I am sure that commercial
solutions have been developed for that kind of thing. I wonder what
sort of places should I call to rent some big gear pullers?

i



What's holding the gears on?

Pulling very large gears
 

Ignoramus9441 wrote:
On 2015-06-18, Cydrome Leader wrote:
Ignoramus7394 wrote:
I am eyeing a job that would involve pulling large gears off their
shafts. Gears are 3ft in diameter and some may be even 4ft.

This being the United States of America, I am sure that commercial
solutions have been developed for that kind of thing. I wonder what
sort of places should I call to rent some big gear pullers?

How are they retained on the shaft? Press fit, clamp collar, set screws,
gib key? For big gears I usually use a set of wedges. That or machinist
jacks.

--
Steve W.

Pulling very large gears
 

In article ,
Ignoramus7394 wrote:

I am eyeing a job that would involve pulling large gears off their
shafts. Gears are 3ft in diameter and some may be even 4ft.

This being the United States of America, I am sure that commercial
solutions have been developed for that kind of thing. I wonder what
sort of places should I call to rent some big gear pullers?

As others have mentioned, how are the gears attached to the shaft?
There is a good chance that they are not simply pressed on, there
instead being some kind of taper lock or hydraulically actuated
mechanism that causes the gear bore to expand. These methods are made
by specialist companies, who typically put their logo and model number
somewhere visible even in the assembled gear on shaft.

Joe Gwinn

Pulling very large gears
 

On Fri, 19 Jun 2015 10:50:25 -0400, Joe Gwinn
wrote:

In article ,
Ignoramus7394 wrote:

I am eyeing a job that would involve pulling large gears off their
shafts. Gears are 3ft in diameter and some may be even 4ft.

This being the United States of America, I am sure that commercial
solutions have been developed for that kind of thing. I wonder what
sort of places should I call to rent some big gear pullers?

As others have mentioned, how are the gears attached to the shaft?
There is a good chance that they are not simply pressed on, there
instead being some kind of taper lock or hydraulically actuated
mechanism that causes the gear bore to expand. These methods are made
by specialist companies, who typically put their logo and model number
somewhere visible even in the assembled gear on shaft.

Joe Gwinn


Once the attachment has been figured out one can make a decision on
pushing them off, pulling them off (and there is a BIG difference)

What Ive been working on recently involved big gears..from raw slabs
of metal to machinery set on the truck


https://picasaweb.google.com/1040422...02602/PFRoller

Gunner