Hydraulic Flow question

[blucoondawg]

I have the DK50SE, which according to Kioti's website produces 16.8 gpm of hydraulic flow. I wonder is this 16.8 the actual amount through the rear remote? I am wondering because I have seen a skidsteer implement which I may be interested in which requires 15.5 gpm, it is a firewood processor, I am wondering if the tractor could run it, I have a hard time believing it could.

 

[Boss 302]

That is a good question, I would be interested in knowing the answer to this also. Gotta love those Blue Ticks, I hunt Walkers.

Randall

 

[J_J]

That total 16.8 GPM flow might include any power steering you may have. So, Implement flow could be less.

No matter what it is, you can use anything hyd, might be a little slower.

 

[LD1]

My guess would be you have about 12 GPM for implement flow.

IT is deceiving but when you see the specs list "total" flow, they are including the powersteering, which is usually around 5GPM on a tractor that size.

And like JJ said, you can run it fine with lower flow, it will just be slower.

 

[the old grind]

Question for you hydraulically experienced guys:

Suppose 16GPM including 5 for the PS from a 'shared' pump. Driving with implement the PS can use "up to"(?) 5GPM and 11GPM 'min' is then available for other functions. So, could more than 11GPM be available to implements when standing?

It's easy to expect that there are frictional losses, and that implement 'requirements' may be based on tractor ratings rather than measured flow. Lord knows we often operate attachments on the fringes of those 'ratings', as LD1 says. (I don't see the OP spinning donuts in the yard while processing firewood. )

No one's response should be considered absolute or definitive, but some discussion could help those of us who wonder about stuff like this. Surely excess capacity is a good thing, but isn't there a bit more wiggle room than just the numbers imply?

 

[LD1]

I could be wrong but I think most tractors have a separate pump for PS. IE, 2 pumps, PS making 5gpm and implement making 12gpm and they list it as "total" 17gpm.

And even so, if there is only 1 pump, The power steering is likely an open center design. Therefore, it dont matter if you are using steering or not, 5gpm is running through the steering box and back to tank.

 

[buickanddeere]

Flow is also measured with the engine at max red line rpm.

 

[murphy1244]

I could be wrong but I think most tractors have a separate pump for PS. IE, 2 pumps, PS making 5gpm and implement making 12gpm and they list it as "total" 17gpm.

And even so, if there is only 1 pump, The power steering is likely an open center design. Therefore, it dont matter if you are using steering or not, 5gpm is running through the steering box and back to tank.

Your correct on that 2 pumps

 

[murphy1244]

Flow is also measured with the engine at max red line rpm.

Flow is at PTO speed.

 

[Coyote machine]

PTO speed IS red line speed.