Hydraulic Flow question

[murphy1244]

I think we AGREE on that.

 

[LD1]

"rated PTO speed" is usually a few hundred RPM's less than redline. And "rated PTO speed" is where most of the specs are taken at. Travel Speed, Hydraulic flow, loader cycle times, etc.

 

[Sysop]

"rated PTO speed" is usually a few hundred RPM's less than redline. And "rated PTO speed" is where most of the specs are taken at. Travel Speed, Hydraulic flow, loader cycle times, etc.

Agreed, my engine RPMs are 2400 to get the PTO to the rated 540 but my engine doesn't redline until 3400RPM. This is similar to others I've operated.

 

[murphy1244]

Dk-40 is 2600

 

[J_J]

PTO has nothing to do with hyd flow except when you use a PTO hyd pump.

Hyd flow is dependent on the engine rpm and I believe the max flow is at max engine rpm.

You can still run a wood processor, it has a large splitter cyl and several smaller cyl and some hyd motors to move wood around.

Now, if you install a PTO hyd pump you may obtain more GPM's, and the pump size is based on your engine HP.

Your tractor does have Power steering, and I believe the one pump might have two sections.

 

[Coyote machine]

Dk-40 is 2600

Stated another way: It is the PTO actual red line on the tach at 2600RPMs for Cat 1 rated implements.

 

[murphy1244]

Stated another way: It is the PTO actual red line on the tach at 2600RPMs for Cat 1 rated implements.

PTO is 2500 rated max is 2600.

 

[mj007]

PTO has nothing to do with hyd flow except when you use a PTO hyd pump.

Hyd flow is dependent on the engine rpm and I believe the max flow is at max engine rpm.
.........................

That's what they're talking about - Hydraulic flow of tractor's pump AT the engine RPM required to turn the PTO @540 RPM ........ Roger?

 

[J_J]

blucoondawg asked what was the flow at max engine rpm to implements, and max engine to produce the max flow is at max engine rpm.

PTO rpm is at a lower engine rpm and therefore less GPM's to the implements.

This has been beat to death, let it go.

Not his engine. Just figures, but associated.

Max engine might produce about 12 GPM's.

Engine at PTO rpm might produce about 10 GPM's.

 

[LD1]

That's what they're talking about - Hydraulic flow of tractor's pump AT the engine RPM required to turn the PTO @540 RPM ........ Roger?

Thats what I am talking about.

I guess the MFG's arent clear. It could be either I guess. And it could even be different by MFG I suppose. I was just always under the impression that flow specs, speed specs, cycle times, etc was all measured at the engine RPM that delivers 540 PRO rpm, which is a little less than WOT.