Hydraulic oil pressure? L785 NH

Tazza said:

The pressure will be factory set to about 2,500-3,000 PSI the GPM is only flow rate, nothing to do with pressure. The problem with using a larger pump is you need to ensure your aux lines are big enough to carry the extra flow.

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jcriddl said:

I just want to make sure that the hydraulic auger will run fast enough for my machine. for example ( http://www.equipmentland.com/products/general/471.shtml ) And is it the gear pump producing this pressure?

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skidsteer.ca said:

That is a fairly big machine so you flow should be ok. 13 to 20 gpm will run a normal auger ok. Your max system or relief pressure is what determines the max torque to turn the bit. The older loaders were typically lower, like 2300 to 2500 instead of 3000 ish. Your machine seem fine.
However the auger drive is vary small, the torque figures on a couple of their auger where published, is low for a skidsteer hydraulic auger, their series 20 is only 731 ft lbs if you have 3000 psi in the loader system. Don't expect to drill 36" holes with that one
Our http://www.premierauger.com/H015PD.php is the smaller drive we carry for full size skidsteers and has 2234 ft/lbs at 3000 psi.
My estimation is the one you looking at should not use a bit over 12" and even then, will stall vary easy in rocks or roots. My model 15 can be stalled in some circumstances.
We also have a model 5 and 10 and the 5 http://www.premierauger.com/H005PD.php has similar specs to what your looking at and is rated 12" but is for pumps with 5 to 10 gpm (you can idle your engine down to stay this low) and the model 10 is 1433 ft/lb and rated for 24" bits and pumps in the 6 to 15 gpm.
I'd be happy to quote you on any of the above. If you need to save some extra money perhaps you could fab you own mount, supply hoses etc.
Just thought you would like to know what the auger your looking at is capable of.
Ken
www.skidsteer.ca

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jcriddl said:

I would be happy to have you quote me on a unit. Would a HO19 work on my unit? [email protected]

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skidsteer.ca said:

The 19 shuould be fine also. just less rpm. 50 to 75 rpm is fine for drilling, I have a 17 gpm pump, but never run full rpm to drill. 12 to 15 gpm is adequate unless you really like to hurry.
You should try to find your gpm and pressure just to be sure. Earlier machines with lower psi would benifit from the 19 drive, it would help keep the torque up even though the pressure is lower then the new loaders. You likely have over 15 gpm to maintain a resonable rpm anyway, but check with NH to be sure.
Email sent, call or email back if you have any ??
Thanks Ken

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