Hydraulic pump gpm

Dan Crick · Feb 7, 2015

I have a international 350 utility gas and I need info on the gpm of my hydraulic pump.The guy i bought it from 4 years ago had a loader on it and he sold loader before i got the tractor but anyways I need to run a hydraulic motor and was wondering if it has the right stuff to run one

Phil Tibbetts · Feb 7, 2015

You need to know the GPM of the pump and the requirements of the motor in GPM to do what you want to do.

Janicholson · Feb 7, 2015

10gpm at 1200psi. Full throttle Jim

87nassaublue · Feb 7, 2015

Does that tractor already have auxiliary hydraulics? I would have expected that tractor to have had an external pump to run the loader because most tractors that size usually have a pump capacity of 5-6 gpm which would run a loader very slowly. I have a IH 504 that has a 12 gpm pump with aux hydraulics. That one is ready to run a loader.

Dan Crick · Feb 7, 2015

Thanks for the input. I am wondering if anybody knows where to but components to attach pump crank? Externaly

IH fan · Feb 7, 2015

(quoted from post at 20:26:52 02/07/15) Thanks for the input. I am wondering if anybody knows where to but components to attach pump crank? Externaly

The 350U should have IPTO, so why not get a pto driven pump... it would be an easier set-up. Then if you only need to run the hydraulic motor in one direction, just engage or dis-engage the pto. If you need bi-directional, valves are available from most farm supply places like TSC or from Northern Hydraulics or similar places. Just an idea.

Dan Crick · Feb 8, 2015

Because I already have another pump and i know they
put loaders on these tractor was just wondering if
they made components to attach to crank. I have also
been looking at those PTO pumps but had this
one.Save 4 or 5 hundred dollars depends where i
shop.

Dan Crick · Feb 8, 2015

Thanks that is the info i needed. It is to small have to go another route.

Dan Crick · Feb 8, 2015

No it doesnt wish it did. That is what i have to set up now. I need to run this motor. 5.9 cu in. rev displacement
1in. Woodruff Key Shaft
Port size: 1/2 NPTF or 7/8-14 SAE
1840 PSI
590 RPM
15.8 GPM I plan on running a snowblower that runs off the pto but am gonna attach to front of tractor because i have had two neck surgeries and cant turn my head.

Dan Crick · Feb 8, 2015

Yes thats what i was looking for the gpm of the pump. I know it is old but was just wanting a starting point.

87nassaublue · Feb 8, 2015

That' what I was thinking. It probably would have had a front pump running off the crankshaft. If you have access to an engine lathe, it shouldn't be a big deal to make a coupling shaft. Grainger might have something that could be fitted to it.

Dan Crick · Feb 8, 2015

Thanks i will look at grainger

Redturbo · Feb 9, 2015

How big is your snowblower? I have mounted a 4ft snowblower onto the front of my W450. I know the snowblower is narrower then the tractor. I got the tractor for free. The factory pump that's in front of the distributor will not run the snowblower, the hydraulic motor stalls when its put to use. The motor is a 7.6 cu. in.(max rpm is 588) I gave up on the factory pump, got a 21 gpm pump that makes 2250 psi that's driven off the pto. Now the motor will throw the snow, but not as far as I was hoping. Maybe 15ft if Im lucky. Been thinking I need a bigger motor, like a 9.4 cu. in. Its max rpm is 475. Im assuming most rear mount snowblowers want to be turned at 540 rpm? I wish could get a 540 pto hydraulic pump that makes 3000 psi & 20 gpm, then it would be like a skid steer for hydraulic power. But I cant find that yet. If I was to do this over again, would get a driveshaft made that goes under the tractor, couple gears, chain, etc & drive it direct off the pto.

My Dad has a SW6 with a pump that is driven off the crankshaft, its suppose to be a 20gpm pump also. Myself & machinist made up a shaft with couplers to drive the pump. But since the 4 cylinder engine turns only 1450 rpm, the 20 gpm pump turned into a 12 gpm gallon pump. It lifts the ram for the blade fine, that's all it does. I don't think it would run a snowblower thou.

Im not a hydraulic pro, just learning lots doing these couple projects.

Dan Crick · Feb 10, 2015

http://www.northerntool.com/shop/tools/product_20031
9053_200319053

Redturbo · Feb 10, 2015

I copied & pasted the link, it took to me to Northern Website. But said sorry this page doesn't work. What was it?
Here couple pictures of the pump & motor Im using. I found a place that makes hydraulic driven snowblowers for skid steers, & compact tractors. For the tractor, they sell a 24gpm pto pump. Using a 7.6 cu in motor that makes 34hp. Was told need 5hp per foot. So its making 14hp more than needed, but doesn't throw the snow 40ft like I thought it would.
This the motor Im using

The pto pump

Redturbo · Feb 10, 2015

Wish I knew more about hyd's, but mostly Im just dangerous.

Dan Crick · Feb 11, 2015

It is a hydraulic motor that is rated to 580 rpm
15.8 gpm 2575 psi It is through northern tool and
equiptment

Dan Crick · Feb 11, 2015

Did u add a pressure relief valve to this system
and do you have any pics of the whole thing

Redturbo · Feb 11, 2015

The relief is inside the spool. Think I found the motor you were looking at on Northern Tool website. Its half the torque of the 1 Im using, & 15hp less. Don't think it will work. How wide is your snowblower?

Dan Crick · Feb 12, 2015

72 inches

Dan Crick · Feb 12, 2015

Spool? Meaning pump? And I only need 40 horsepower max

mkirsch · Feb 12, 2015

No, spool as in valve.

Keep in mind that the specs are the MINIMUM necessary to operate the motor. Don't care what they say, it's minimum. Your results will be satisfactory at best.

A hydraulic system used at 100% capacity for very long will get hot and lose efficiency.

Dan Crick · Feb 12, 2015

ok thanks I plan on turning a snowblower that has a
max horsepower rating of 40 horse. What size motor
and pump would be the best. 38 horse tractor

Redturbo · Feb 12, 2015

You will better off in getting a shaft made to the front of the tractor.
Then drive is with chain/sprockets off the pto. Trust me on this, other wise you will be disappointed with the performance of it. Wish I would have gone that route instead. Good luck.

mkirsch · Feb 13, 2015

I found an online hydraulic calculator:
http://www.calcunation.com/calculators/machinery/fluid power/hydraulic-horsepower.php

According to that, the motor you mentioned earlier in the thread can only do about 17HP.

Even the biggest PTO pump that SurplusCenter has at 2250PSI and 21GPM is only about 27.5HP, but that is *BEFORE* losses.

When a snowblower says 40HP, you *need* 40HP to run it decently, at least. You're going to spend a fortune on the industrial sized pump and motor necessary to run it.

Is this a 3pt type snowblower that you're trying to mount on the front?

Dan Crick · Feb 13, 2015

yes thats my plan or was my plan. LOL Thanks for the
info

Hydraulic pump gpm

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