Front 3rd Function Flow Rate?

[chim]

Anyone have an idea what the flow rate might be on an L4240 third function line? Thanks.

 

[TheOldHokie]

Anyone have an idea what the flow rate might be on an L4240 third function line? Thanks.

Whatever the implement pump produces.

Dan

 

[GrizBota]

Not 100% sure this is what you’re looking for, but the specs on the implement pump are 37 liters/minutes (about 9.8 gpm) as per this link. Grand L 40 Series Glossy

Edit, well looks like Dan helped us out, this is what you’re after.

 

[TheOldHokie]

Not 100% sure this is what you’re looking for, but the specs on the implement pump are 37 liters/minutes (about 9.8 gpm) as per this link. Grand9 L 40 Series Glossy

Edit, well looks like Dan helped us out, this is what you’re after.

Your the guy that pulled up the actual specification.

Want to bet Kubota assumed 100% volumetric efficiency when they came up with that number?


Dan

 

[chim]

Thanks fellas! I know very little about hydraulics on a tractor. That appears to be what I'm looking for. Right now there's no application, but it's one of those bits of info that may come in handy. There could be something with a small hydraulic motor as part of a project, etc.

 

[GrizBota]

Thanks fellas! I know very little about hydraulics on a tractor. That appears to be what I'm looking for. Right now there's no application, but it's one of those bits of info that may come in handy. There could be something with a small hydraulic motor as part of a project, etc.

Going to get you a “Lame” Shark?

 

[chim]

Going to get you a “Lame” Shark?

Honestly not sure what could happen. Knowing the flow rate is a useful piece of information though. There have been times when some sort of LS or sickle bar would be handy. Maybe just a motor as part of a small conveyor, some hydraulic tool, nothing planned. If something looks like it could be a useful gadget run with hydraulics then it would be time to get serious and research it.

 

[TheOldHokie]

Honestly not sure what could happen. Knowing the flow rate is a useful piece of information though. There have been times when some sort of LS or sickle bar would be handy. Maybe just a motor as part of a small conveyor, some hydraulic tool, nothing planned. If something looks like it could be a useful gadget run with hydraulics then it would be time to get serious and research it.

When/if you get serious I would suggest you figure about 85%-90% of Kubota's published specification. Thats the rule of thumb for gear pump volumetric efficoency. I suspect Kubota simply calculates pump displacement x RPM without any allowance for pump (in)efficiency.

Dan

 

[chim]

Thank you

 

[GreensvilleJay]

You also need to know the available pressure (PSI). Not all tractors run the same PSI !!!

 

[chim]

You also need to know the available pressure (PSI). Not all tractors run the same PSI !!!

Good point. I'm guessing the pressure would vary with the engine speed?

 

[TheOldHokie]

Good point. I'm guessing the pressure would vary with the engine speed?

No.
Flow rate varies with engine speed.
Pressure varies with hydraulic load.

Dan

 

[chim]

Looks like I'll need to do some "learnin" before embarking on a project

 

[TheOldHokie]

Looks like I'll need to do some "learnin" before embarking on a project

"Learnin" good thing.

Dan