Badly need a HYD pump lesson!!!

Joined
Mar 3, 2001
Messages
351
I am such an idiot. I know nothing about hydraulics at all. All these years I have spent being a scrounge has all been in vain. I went to an auction today and thought I got the deal of the century. Thought for sure I was ready to start building a hydraulic press. Guess not according to my dad. He said these are one way self contained hoists for big trucks and they will not work for a press. I got three for $2. The one leaning on the bed is PTO ran according to him and worthless. That thing is every bit of 500 pounds, I know, I loaded them all by myself. :D
Oh well, I spent $42 today and have to go back and get a nice anderson bay window and another brand new argon filled or some crap new anderson window that I didn't have room for. Got the stand for a $1 in the last pic. Think I will bolt a plate on it and make it a stand for my Coote. It is heavy, I seriously doubt that I could put enough pressure on a blade to move it. I will still probably bolt it down to the concrete floor. It says property of the defense department. The brass label is pretty cool. I need to get a picture of it. Felt like 200 or 300 pounds loading it but there is the number "160" stamped on it a couple places so I figure that is the weight. It is cast iron. I got a brand new counter top I figured would make a nice bench and a nice work table for a buck. Bunch of other stuff that is not worth listing. Saw some awesome stuff sell dirt cheap today. Wish I had more money.
Oh, I didn't post it earlier but a couple weeks ago I bought a huge power hacksaw for $70. It is pretty bad. Little much for cutting knife stock maybe, but I have interest in building car trailers, 4 link frames for drag cars, stands and just bigger cutting jobs than just knives.
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stand1.jpg

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If there is a hole in each end of the cylinder then you should be able to make them work for a press. I can't tell from the pictures.
 
Basically it comes down to three things, pump PSI rating, cylinder diameter and proper valving.

PSI X cylinder piston area = pressure applied

There has to be sufficient pressure to act as the type of press you want.

The other problem is how to get the cylinder to retract after the stroke. You could do this with a large spring or fit the pump with a double acting valve.
 
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