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New Holland  > General  > Hydraulic oil pressure? L785 NH  
 
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 Author Thread: Hydraulic oil pressure? L785 NH
jcriddl is not online. Last active: 9/7/2009 7:16:34 PM jcriddl
Joined: 03 Apr 2009
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Hydraulic oil pressure? L785 NH
Posted: 08/25/2009 05:45 PM
I have a few questions. Dose the gear pump produce the oil pressure for the auxillary lines for a auger attachment? What pressure is it supposed to produce? or GPM? Are there other gear pumps available to produce more pressure?
Tazza is not online. Last active: 8/21/2014 11:07:28 PM Tazza
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Re: Hydraulic oil pressure? L785 NH
Posted: 08/25/2009 08:13 PM
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.

Bobcat 763 burntSadbut i'm working on it!, 04 S150 with air and a smooshed cab, S250 turbo.
jcriddl is not online. Last active: 9/7/2009 7:16:34 PM jcriddl
Joined: 03 Apr 2009
Total Posts: 19
 
Re: Hydraulic oil pressure? L785 NH
Posted: 08/25/2009 09:04 PM
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?
skidsteer.ca is not online. Last active: 7/21/2014 8:31:40 PM skidsteer.ca
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Re: Hydraulic oil pressure? L785 NH
Posted: 08/26/2009 05:17 AM

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

 


NH LS 160, S150, S185 Hoe Brusher Grapple Auger, Mixer Tiller Soil Conditioner Trencher Tracks Snow Blade Wood Splitter Stump Grinder Land Plane. Dealer Virnig Erskine Componets Plus Wallenstein Bauma Lite
jcriddl is not online. Last active: 9/7/2009 7:16:34 PM jcriddl
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Re: Hydraulic oil pressure? L785 NH
Posted: 08/26/2009 06:00 AM
I would be happy to have you quote me on a unit. Would a HO19 work on my unit? KBFence@q.com
skidsteer.ca is not online. Last active: 7/21/2014 8:31:40 PM skidsteer.ca
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Re: Hydraulic oil pressure? L785 NH
Posted: 08/26/2009 07:10 AM

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


NH LS 160, S150, S185 Hoe Brusher Grapple Auger, Mixer Tiller Soil Conditioner Trencher Tracks Snow Blade Wood Splitter Stump Grinder Land Plane. Dealer Virnig Erskine Componets Plus Wallenstein Bauma Lite
Earthwerks Unlimited is not online. Last active: 2/28/2012 8:54:50 AM Earthwerks Unlimited
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Re: Hydraulic oil pressure? L785 NH
Posted: 08/26/2009 03:58 PM

Just be sure that whatever attachment you plan to use is compatible with the machine's GPM--regular flow or high flow. Some high-flow augers and attachments need a thrid line for a case drain.

I have 1,700 lb.-ft McMillen auger head and I can stall it with a 16” auger.

Check out www.skidsteersupply.com they sometimes have factory surplus high-flow kits which are complete with pump and hoses. 

 


SE Mich. NH LS 185.b: tracks, augers, 8' plow, forks, grapple, dirt bucket, wood splitter; NH TC33D tractor: power toplink, SS-style QK-attach, harley rake, attachments, dump truck, dump trailer, road grader, manlift, etc.
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