Hydraulic hammer using a bottle Jack?

Patrice Lemée

Patrice Lemée

Joined
Aug 13, 2002
Messages
5,703
I was reading a post from patriqq (Patrick Brewster) about modifying a bottle jack.

http://www.bladeforums.com/forums/showthread.php?t=664993&highlight=hydraulic+press

Could this be used for a forging press. I know not a full size press but I just wanted to build a mini press to play around with small stock.
Will the 4 tons be too little or will the piston travel be too small? Anything esle I am that maybe I am not seeing.

I know next to nothing about hydraulic presses but since I will eventually be building one (I have a tool building addiction :( ) I thought this would be a good place to start.

Thanks

Patrice
 
Pat i think you would get more use out of a harbor F air hydrolic jack 20 ton and it can do some real work
 
Pat J T on this has a press using H F jack and a vid shoing it working check it out
 
I wouldn't bother with anything that doesn't move at 1 inch per second or so. Te problem won't be power, it will be getting things moving before the steel cools.

-d
 
Pat, I have a parts listing from when I built my press if you want it. It end up costing me around $800 but the was around 10 years ago.:D
I got all the steel from a junkyard and I would build a H Frame press if I had to do it again.:thumbup:
 
Thanks guys, it looks like it works sorta but it isn't good enough to warrant the effort and money to build this.
I will follow your advice and wait to be able to build a full size one. I did the same when I was shoping for a mill and I am really glad I followed everyone's advice here and waited to buy a bigger model.

IG, I would love that list if it is not too much trouble.

Thanks again.

Patrice
 
PARTS LISTING
SUPPLIER PART# DESCRIPTION COMMENTS
NORTHERN 1053-C161 BARNES 2 STAGE PUMP -11GPM
2010-C161 PRINCE STANDARD 4-WAY CONTROL VALVE
4051-C161 7 GALLONS HYDRAULIC OIL TANK MUST CLEAN THE INSIDE WELL
4022-C161 RETURN LINE FILTER
4010-C161 SUCTION STRAINER THIS GOES INTO THE TANK
FITTINGS AND HOSES YOU WILL NEED 3 HI- PRESSURE HOSES AND LOW PRESSURE HOSE FOR THE RETURN.
53606-C161 GLYCERIN FILLED GAUGE 0-3000PSI
SURPLUS CENTER 10-1485 ELECTRIC MOTOR I USE A 3 HP AT 3250 RPMS
09 4954 HYDRAULIC CYLINDER I USE A 4 1/2" BORE X 8" STROKE WITH THE PUMP AND MOTOR SHOULD BE GENERATING 24 TONS
If I had to do it again I would go with a 5" minimum cylinder and a H frame.
 
indian george said:
...If I had to do it again I would go with a 5" minimum cylinder and a H frame.
Click to expand...

For the fellas new to building presses: As you increase the cylinder diameter you need to increase your pump's GPM to keep the same speed. If you go much bigger you will also want to increase the line sizes, reservoir size, and the motor size.

Tons exerted is determined by oil pressure and cylinder size; while GMP determines how fast your ram will move. The safe way for more tons is a larger cylinder NOT higher oil PSI. If your building a press I highly suggest Jim Batson's book: Build Your Own Hydraulic Forging Press.

Just thought I would clear that up for the new guys George. :)
 
Here is a pic of my 20ton mini.I can work 1-1/2X1-1/4" x 6" billets with out much trouble.
Stan
 

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