Low Pressure Hydrulic Cylinder

[HWHII]

I have aquired a low pressure 2 way cylinder 4" dia. with a 20" stroke. I was told it will produce 20 ton at 2200 psi. Is it possible to use this type of cylinder in a forging press? Thank you.

[Nakedanvil - Grant Sarver]

Actually at 2200psi a 4" cylinder will produce 13 ton. Don't be fooled, a fast 13 tons can do a lot of work. Just like using a small power hammer, you need to concentrate the force, Luke!

[HWHII]

Thanks for that info Master Jedi! Do you have any suggestions on what type of pump I might use with this? I have a OTC 2 gal. foot air pump which would work but I am worried about over loading it, even with a gage on it. I would like it to work in both directions so I can drift with it.

[Richard Furrer]

Thanks for that info Master Jedi! Do you have any suggestions on what type of pump I might use with this? I have a OTC 2 gal. foot air pump which would work but I am worried about over loading it, even with a gage on it. I would like it to work in both directions so I can drift with it.

You can set the pressure on most pumps with a turn of a screw.
The "standard" practice on blacksmith forging presses outside of industry are log splitter pumps. I suggest you get the book by Jim Batson on building a hydraulic forging press. The motor/pump/other calculations and parts are explained rather well.
http://www.dfoggknives.com/hydralic.htm
Ric

[Nakedanvil - Grant Sarver]

You can set the pressure on most pumps with a turn of a screw.
The "standard" practice on blacksmith forging presses outside of industry are log splitter pumps. I suggest you get the book by Jim Batson on building a hydraulic forging press. The motor/pump/other calculations and parts are explained rather well.
http://www.dfoggknives.com/hydralic.htm
Ric

I've not seen a pump like that, usually the valve has an adjustable pressure relief. The unit HWII has is a 5-10,000psi similar to an Enerpac I think. You better get a guage, but you'll probably be watching the work.

[Mainely,Bob]

That has been my experience also,the relief valve is what we adjusted to get more pressure.
Most of my experience comes from hydraulics powered by a gas or diesel engine so there`s plenty of power.
Are there any dangers I need to be aware of when doing this with a limited HP electric motor?

[HWHII]

You can set the pressure on most pumps with a turn of a screw.
The "standard" practice on blacksmith forging presses outside of industry are log splitter pumps. I suggest you get the book by Jim Batson on building a hydraulic forging press. The motor/pump/other calculations and parts are explained rather well.
http://www.dfoggknives.com/hydralic.htm
Ric

Thanks Ric. I do have the book but I was hoping for something simplier.