Powering an 80-ton Hydraulic Press?

[PAToyota]

So, I have an 80-ton hydraulic press with a crappy hand-pump system that needs to be rebuilt...

I also have one of these types of pumps from a hydraulic lift sitting around...

Any reasons I shouldn't be thinking about combining the two?

 

[PAE]

Harbour fright sells a air / hydraulic setup im planning to pickup any day now.

 

[CarterKraft]

So, I have an 80-ton hydraulic press with a crappy hand-pump system that needs to be rebuilt...

I also have one of these types of pumps from a hydraulic lift sitting around...

Any reasons I shouldn't be thinking about combining the two?

Pressure of the press pump/cylinder?

If the press is sub 10k psi stuff then it will work fine but if it's 10k stuff then your 80t will be more like 20T. It will be fast though I bet

 

[arse_sidewards]

If it does turn out to need a 10k supply the 10k psi pump/reservoir combos are like $100 for air over an $250 for full electric.

 

[PAToyota]

Pressure of the press pump/cylinder?

That's what I have to figure out...

 

[AlxJ64]

I'd wager that its a 10ksi cylinder, most press cylinders are. I've got one of those little single acting 10ksi electric pumps on mine; it came with the air pump but it was still rather slow. I put a quick connect (10ksi series) on it and my hose making press too so that I can run both off of the same pump. I've also used it to run my porta-power rams and some other enerpac style cylinders.

Just make sure the hoses and fittings are all equally rated. 10,000 psi is no joke.

 

[PAE]

Need a press cylinder ?

Pm for pics and specs.

Making it fit your frame is on you.

 

[sdmuleman]

No, but it's likely only good for 20 ton or so (2500/10k psi) with that power source. I'd plumb the new pump in with a needle or ball valve (rated for 10k psi) and a tee - that way you can use the electric pump for normal use and if you get something really stubborn run it down till the electric pump hits max, close the valve and then use hand pump for high force.

 

[PAToyota]

This is a big old beast...

The only information on it is what is cast into the head of it:

And this is the current pump on it:

These are the only pictures I can find on the computer. I'll have to get out there this weekend and look at things in more detail.

I put a quick connect (10ksi series) on it and my hose making press too so that I can run both off of the same pump. I've also used it to run my porta-power rams and some other enerpac style cylinders.

That's what I'm thinking. Have quick connects so that I can use the power unit on a number of things including the press.

 

[CarterKraft]

All bets are off on that one. I wouldn't think that piping is 10k piping?

K.R. Wilson / KRW - Publication Reprints - Hydraulic Arbor Presses | VintageMachinery.org

K.R. Wilson / KRW - Publication Reprints | VintageMachinery.org

 

[AlxJ64]

All bets are off on that one. I wouldn't think that piping is 10k piping?

Agreed, that might be a 3ksi machine at best. So in that case, the original pump posted would work. 80T though, that needs to be about an 8" diameter piston at that pressure.

160,000 lbs / 3000 = 53.3 in^2
/ R^2Pi, R= ~4"

 

[arse_sidewards]

All bets are off on that one. I wouldn't think that piping is 10k piping?

They made pipe in some stupid thick wall thicknesses back in the day. That tee doesn't look 10k though but it's not like they had stupid high safety factors on shit back then either. I've got more than my fair share of garbage home depot cast iron fitting in use in 3k systems (all small 1/4 shit though) so maybe.....

I'd toss a gauge on it. I bet it's 1500 or something.

 

[sdmuleman]

There is no way that's an 80 ton press. Far too lightly built for that load, piping is too flimsy, and the arbor press setup on there means the entire load is going to be taken on that rack/pinon which is also far too light.

Vintage machine document linked above shows a 25 ton press that looks to match pretty closely. And the 75 ton one they list is clearly a much heavier press. Specs in the book equate to ~2500 psi max (5" ram, 25 tons).

 

[PAE]

Had a 40 ton will post up pics asap have to dig them up on imgur.

 

[[486]]

and the arbor press setup on there means the entire load is going to be taken on that rack/pinon which is also far too light.

I doubt that would hold up to much of anything, they weren't retarded back then

Bet the rack and pinion just pulls the hydraulic cylinder out and sucks fluid through the pump's check valves. Slightly different implementation of a two stage pump, but mechanical instead of hydraulic

 

[sdmuleman]

Yep, your right. That would make far more sense.