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Posted by Proctologically Violated©® on July 1, 2009, 6:28 pm
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Awl --
My buddy had a custom hydraulic press built, for a job he runs, pressing
grills together.
Imagine an "A" frame press, except the "bed" consists of a cast iron drill
press table. iow, the ram was hung above the dp table, via 1.25" threaded
rod, with the motor/reservoir (the hydraulic "unit") under the table -- all
off-the-shelf Grainger parts or standard steel-house products. The unit is
button-actuated, with limit switches in both up and down strokes.
Without the dp table (about 6 ft, nice), and without labor, this cost $6K.
The labor was paid for with a Kent surface grinder.
Inyway, here's the Q:
The ram measures 1.75" dia. The pressure gage reads 1500 psi upon
application, for this job.
Is it correct to assume that area x gauge psi = the actual force applied?
In this case, about 3,600 lb?
If so, that would mean that for "15 ton", which was sposed to be the
capacity of this unit, the pressure would have to reach 12,500 psi on a 1.75
dia ram?
I don't think the gauge reads anywhere near 12500 psi, more like 6,000, and
the gauge came with the hydraulic unit.
If the gauge is indeed matched to the hydraulic unit, this would make it
closer to a 7.5 ton unit. Hmmmm......
--
Mr. PV'd
Mae West (yer fav CongressShill) to the Gangster (yer fav Lobbyist):
Hey, Big Boy, is that a wad (of cash) in yer pocket, or are you just
glad to see me??
Experiment on Homo Sapiens -- CEOs, Lawyers, and Politicians, in
particular.
Spare the animals.
Click here every day to feed an animal that needs you today.
www.theanimalrescuesite.com/
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Posted by Half-Nutz on July 1, 2009, 6:45 pm
Please log in for more thread options On Jul 1, 5:28=A0pm, "Proctologically Violated=A9=AE"
> Awl --
>
> My buddy had a custom hydraulic press built, for a job he runs, pressing
> grills together.
> Imagine an "A" frame press, except the "bed" consists of a cast iron dril=
l
> press table. =A0iow, the ram was hung above the dp table, via 1.25" threa=
ded
> rod, with the motor/reservoir (the hydraulic "unit") under the table -- a=
ll
> off-the-shelf Grainger parts or standard steel-house products. =A0The uni=
t is
> button-actuated, with limit switches in both up and down strokes.
>
> Without the dp table (about 6 ft, nice), and without labor, this cost $6K=
.
> The labor was paid for with a Kent surface grinder.
>
> Inyway, here's the Q:
> =A0 =A0 The ram measures 1.75" dia. =A0The pressure gage reads 1500 psi u=
pon
> application, for this job.
> Is it correct to assume that area x gauge psi =3D the actual force applie=
d?
> In this case, about 3,600 lb?
>
> If so, that would mean that for "15 ton", which was sposed to be the
> capacity of this unit, the pressure would have to reach 12,500 psi on a 1=
.75
> dia ram?
>
> I don't think the gauge reads anywhere near 12500 psi, more like 6,000, a=
nd
> the gauge came with the hydraulic unit.
> If the gauge is indeed matched to the hydraulic unit, this would make it
> closer to a 7.5 ton unit. =A0Hmmmm......
>
> --
>
> Mr. PV'd
>
> Mae West (yer fav CongressShill) to the Gangster (yer fav Lobbyist):
> =A0 =A0 =A0Hey, Big Boy, is that a wad (of cash) in yer pocket, or are yo=
u just
> glad to see me??
>
> Experiment on Homo Sapiens -- CEOs, Lawyers, and Politicians, =A0in
> particular.
> Spare the animals.
>
> Click here every day to feed an animal that needs you today.www.theanimal=
rescuesite.com/
You need to know the diameter of the piston, not the ram.
Use that surface area X pressure to calc. the force.
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Posted by Proctologically Violated©® on July 1, 2009, 6:50 pm
Please log in for more thread options
On Jul 1, 5:28 pm, "Proctologically Violated©®"
> Awl --
>
> My buddy had a custom hydraulic press built, for a job he runs, pressing
> grills together.
> Imagine an "A" frame press, except the "bed" consists of a cast iron drill
> press table. iow, the ram was hung above the dp table, via 1.25" threaded
> rod, with the motor/reservoir (the hydraulic "unit") under the table --
> all
> off-the-shelf Grainger parts or standard steel-house products. The unit is
> button-actuated, with limit switches in both up and down strokes.
>
> Without the dp table (about 6 ft, nice), and without labor, this cost $6K.
> The labor was paid for with a Kent surface grinder.
>
> Inyway, here's the Q:
> The ram measures 1.75" dia. The pressure gage reads 1500 psi upon
> application, for this job.
> Is it correct to assume that area x gauge psi = the actual force applied?
> In this case, about 3,600 lb?
>
> If so, that would mean that for "15 ton", which was sposed to be the
> capacity of this unit, the pressure would have to reach 12,500 psi on a
> 1.75
> dia ram?
>
> I don't think the gauge reads anywhere near 12500 psi, more like 6,000,
> and
> the gauge came with the hydraulic unit.
> If the gauge is indeed matched to the hydraulic unit, this would make it
> closer to a 7.5 ton unit. Hmmmm......
>
> --
>
> Mr. PV'd
>
> Mae West (yer fav CongressShill) to the Gangster (yer fav Lobbyist):
> Hey, Big Boy, is that a wad (of cash) in yer pocket, or are you just
> glad to see me??
>
> Experiment on Homo Sapiens -- CEOs, Lawyers, and Politicians, in
> particular.
> Spare the animals.
>
> Click here every day to feed an animal that needs you
> today.www.theanimalrescuesite.com/
You need to know the diameter of the piston, not the ram.
Use that surface area X pressure to calc. the force.
============================================
I'm calling the "ram" the shiny protruding cylinder. Is that correct?
If so, is the piston generally bigger or smaller than this tube?
Will it say somewhere on a label on the cylinder unit?
--
Mr. PV'd
Mae West (yer fav CongressShill) to the Gangster (yer fav Lobbyist):
Hey, Big Boy, is that a wad (of cash) in yer pocket, or are you just
glad to see me??
Experiment on Homo Sapiens -- CEOs, Lawyers, and Politicians, in
particular.
Spare the animals.
Click here every day to feed an animal that needs you today.
www.theanimalrescuesite.com/
|
|
Posted by Half-Nutz on July 1, 2009, 7:04 pm
Please log in for more thread options On Jul 1, 5:50=A0pm, "Proctologically Violated=A9=AE"
>
> On Jul 1, 5:28 pm, "Proctologically Violated=A9=AE"
>
>
>
>
>
> > Awl --
>
> > My buddy had a custom hydraulic press built, for a job he runs, pressin=
g
> > grills together.
> > Imagine an "A" frame press, except the "bed" consists of a cast iron dr=
ill
> > press table. iow, the ram was hung above the dp table, via 1.25" thread=
ed
> > rod, with the motor/reservoir (the hydraulic "unit") under the table --=
=A0
> > all
> > off-the-shelf Grainger parts or standard steel-house products. The unit=
is
> > button-actuated, with limit switches in both up and down strokes.
>
> > Without the dp table (about 6 ft, nice), and without labor, this cost $=
6K.
> > The labor was paid for with a Kent surface grinder.
>
> > Inyway, here's the Q:
> > The ram measures 1.75" dia. The pressure gage reads 1500 psi upon
> > application, for this job.
> > Is it correct to assume that area x gauge psi =3D the actual force appl=
ied?
> > In this case, about 3,600 lb?
>
> > If so, that would mean that for "15 ton", which was sposed to be the
> > capacity of this unit, the pressure would have to reach 12,500 psi on a
> > 1.75
> > dia ram?
>
> > I don't think the gauge reads anywhere near 12500 psi, more like 6,000,
> > and
> > the gauge came with the hydraulic unit.
> > If the gauge is indeed matched to the hydraulic unit, this would make i=
t
> > closer to a 7.5 ton unit. Hmmmm......
>
> > --
>
> > Mr. PV'd
>
> > Mae West (yer fav CongressShill) to the Gangster (yer fav Lobbyist):
> > Hey, Big Boy, is that a wad (of cash) in yer pocket, or are you just
> > glad to see me??
>
> > Experiment on Homo Sapiens -- CEOs, Lawyers, and Politicians, in
> > particular.
> > Spare the animals.
>
> > Click here every day to feed an animal that needs you
> > today.www.theanimalrescuesite.com/
>
> You need to know the diameter of the piston, not the ram.
> Use that surface area X pressure to calc. the force.
>
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>
> I'm calling the "ram" the shiny protruding cylinder. =A0Is that correct?
>
> If so, is the piston generally bigger or smaller than this tube?
> Will it say somewhere on a label on the cylinder unit?
>
> --
>
> Mr. PV'd
>
> Mae West (yer fav CongressShill) to the Gangster (yer fav Lobbyist):
> =A0 =A0 =A0Hey, Big Boy, is that a wad (of cash) in yer pocket, or are yo=
u just
> glad to see me??
>
> Experiment on Homo Sapiens -- CEOs, Lawyers, and Politicians, =A0in
> particular.
> Spare the animals.
>
> Click here every day to feed an animal that needs you today.www.theanimal=
rescuesite.com/- Hide quoted text -
>
> - Show quoted text -
Take a look at the many pictures avaialble on the internet....
http://www.hycocanada.com/cylinderintro.html
I don't know if your cylinder is marked or not.
The ones at the local Farm and Fleet are usually marked...
In this example the Bore and Stroke are listed, along with the rod
diameter.
https://www.surpluscenter.com/item.asp?UID=3D2009070118002688&item=3D9-4410=
-04&catname=3D
Notice that the bore is always larger than the rod diameter. Well,
almost always..
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Posted by Proctologically Violated©® on July 1, 2009, 7:19 pm
Please log in for more thread options
On Jul 1, 5:50 pm, "Proctologically Violated©®"
>
> On Jul 1, 5:28 pm, "Proctologically Violated©®"
>
>
>
>
>
> > Awl --
>
> > My buddy had a custom hydraulic press built, for a job he runs, pressing
> > grills together.
> > Imagine an "A" frame press, except the "bed" consists of a cast iron
> > drill
> > press table. iow, the ram was hung above the dp table, via 1.25"
> > threaded
> > rod, with the motor/reservoir (the hydraulic "unit") under the table --
> > all
> > off-the-shelf Grainger parts or standard steel-house products. The unit
> > is
> > button-actuated, with limit switches in both up and down strokes.
>
> > Without the dp table (about 6 ft, nice), and without labor, this cost
> > $6K.
> > The labor was paid for with a Kent surface grinder.
>
> > Inyway, here's the Q:
> > The ram measures 1.75" dia. The pressure gage reads 1500 psi upon
> > application, for this job.
> > Is it correct to assume that area x gauge psi = the actual force
> > applied?
> > In this case, about 3,600 lb?
>
> > If so, that would mean that for "15 ton", which was sposed to be the
> > capacity of this unit, the pressure would have to reach 12,500 psi on a
> > 1.75
> > dia ram?
>
> > I don't think the gauge reads anywhere near 12500 psi, more like 6,000,
> > and
> > the gauge came with the hydraulic unit.
> > If the gauge is indeed matched to the hydraulic unit, this would make it
> > closer to a 7.5 ton unit. Hmmmm......
>
> > --
>
> > Mr. PV'd
>
> > Mae West (yer fav CongressShill) to the Gangster (yer fav Lobbyist):
> > Hey, Big Boy, is that a wad (of cash) in yer pocket, or are you just
> > glad to see me??
>
> > Experiment on Homo Sapiens -- CEOs, Lawyers, and Politicians, in
> > particular.
> > Spare the animals.
>
> > Click here every day to feed an animal that needs you
> > today.www.theanimalrescuesite.com/
>
> You need to know the diameter of the piston, not the ram.
> Use that surface area X pressure to calc. the force.
>
> ============================================
>
> I'm calling the "ram" the shiny protruding cylinder. Is that correct?
>
> If so, is the piston generally bigger or smaller than this tube?
> Will it say somewhere on a label on the cylinder unit?
>
> --
>
> Mr. PV'd
>
> Mae West (yer fav CongressShill) to the Gangster (yer fav Lobbyist):
> Hey, Big Boy, is that a wad (of cash) in yer pocket, or are you just
> glad to see me??
>
> Experiment on Homo Sapiens -- CEOs, Lawyers, and Politicians, in
> particular.
> Spare the animals.
>
> Click here every day to feed an animal that needs you
> today.www.theanimalrescuesite.com/- Hide quoted text -
>
> - Show quoted text -
Take a look at the many pictures avaialble on the internet....
http://www.hycocanada.com/cylinderintro.html
======================================
OK, I see. So the "bore" dia is what I would use in the area x psi calc,
right?
Which in this picture is the red ditty with what looks like an o-ring seal?
Which has quite a bigger diameter than the rod!
So, now, is the gauge psi the right psi to be using? Assuming the gauge is
in the right place....
--
Mr. PV'd
Mae West (yer fav CongressShill) to the Gangster (yer fav Lobbyist):
Hey, Big Boy, is that a wad (of cash) in yer pocket, or are you just
glad to see me??
Experiment on Homo Sapiens -- CEOs, Lawyers, and Politicians, in
particular.
Spare the animals.
Click here every day to feed an animal that needs you today.
www.theanimalrescuesite.com/
I don't know if your cylinder is marked or not.
The ones at the local Farm and Fleet are usually marked...
In this example the Bore and Stroke are listed, along with the rod
diameter.
https://www.surpluscenter.com/item.asp?UID=2009070118002688&item=9-4410-04&catname=
Notice that the bore is always larger than the rod diameter. Well,
almost always..
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>
> My buddy had a custom hydraulic press built, for a job he runs, pressing
> grills together.
> Imagine an "A" frame press, except the "bed" consists of a cast iron dril=