PTO Pump Power

[RhettScruggs]

I have a 5" cylinder that's 48" long for a wood splitter. I need to go to a PTO pump for the hydraulics for speed and to not over task the tractor hydraulics.
My PTO HP is 24 (CAT 265B-33 HP tractor hydro). The Prince pump I'm looking at requires 27.4 HP at 2000 PSI but I plan to run it at approx 1800 PSI where 20.4 HP is listed for 1500 PSI for the same pump.
Is this a recommended move?

 

[Wombat125]

I have a 5" cylinder that's 48" long for a wood splitter. I need to go to a PTO pump for the hydraulics for speed and to not over task the tractor hydraulics.
My PTO HP is 24 (CAT 265B-33 HP tractor hydro). The Prince pump I'm looking at requires 27.4 HP at 2000 PSI but I plan to run it at approx 1800 PSI where 20.4 HP is listed for 1500 PSI for the same pump.
Is this a recommended move?

If my cypherin' is correct, that works out to .0136 hp per psi.

Or 24.48 hp required for 1800 psi.

Or at your 24 hp, the pump would push 1766 psi.

Sounds like it would probably work.

 

[hbaird]

Take a look at two speed pumps. You don't need the max pressure and flow rate at the same time. Until the cylinder is about filled the pressure is low, then when the wedge hits the wood the pressure goes up and the flow rate goes way down.
hbaird

 

[wkpoor]

I have operated this Prince (21GPM) on an Allis CA rated at about 24HP PTO and it did OK but I had pressure at 1500PSI. I like to size my pumps so the engine has an easy time of powering it. Running it on the Deere with 60HP it never even knows its on there and I turned it up to 2000PSI.

 

[MichiganIron]

If this helps at all:

At 1750 psi, Horsepower and GPM are roughly equal.