Replaced a Eaton Hydraulic 22gpm Ag use Pump with gearbox with a 21gpm Prince cast iron type universal pump.

[Brown Dog]

Anybody have any knowledge of these ?

The new prince type pump runs my poultry caking machine way faster at the same PTO rpm.

Like TOO FAST.
I’m sure I’ll have to run it at a slower rpm.

Both are rated at 2300psi 540 PTO rpm.
Borrowed InnerWeb pix

 

[oldnslo]

Was the old original pump wore out so was not pumping like new? Other wise per your statement should be very similar flow rates.

 

[Brown Dog]

Yes the original 10yo pump was worn out had been rebuilt once & was pouring fluid bad out of input seal getting fluid scalding hot.

It was awful weak too choking down & stalling in deep litter.

The original pump having that gearbox says 2.85:1 gear reduction.

It must have slowed the pump way down so it wouldn’t turn the machine so fast.

 

[oldnslo]

I suspect the 2.85 was a speed increaser since pumps don’t typically like running slow.

If oil getting scalding hot also indicates excessive leakage.

Blowing shaft seal also indicated high leakage in a gear pump.

 

[LD1]

How big is the oil reservoir you are drawing out of?

Unless it's huge.....if you are operating continuously at 20+GPM and 2000+psi and no cooler....oil is going to get VERY hot regardless

 

[Brown Dog]

The implement mfg told me the old gearbox sped the pump up … idk.

I assumed it slowed the pump down since it was so much Slower at idle than the new pump w/o the gearbox.
Two totally different style pumps I know but both are almost identical gpm & psi rating.

The reservoir tank holds 30gals.
No cooler but I’d guess 40-50’ of hoses the fluid travels thru before it gets back to the tank.

It’s not ran at max psi continuously but it is ran for 5-6hrs strait sometimes.

It’ll be 2wks before I can run machine in the chicken house seeing how / what it’ll do