Anyone run a hyd pump w/ a 12V clutch?

[PILOON]

You could always check a vendor of Fisher snow plows as they now use clutched pumps on most of the more recent installations.

 

[ArTrvlr]

That seems like it would wear the shaft down extremely quickly

The pulley would have to be mounted on a separate bearing, like any clutch driven pump.

Intersting idea about pulling a pin to disengage the pump of a belt-driven
system. I have not heard of that.

If you tried a clutch type pump, and it slipped, you possibly could drill and tap for a bolt to lock the two halves of the clutch together.

BUT... it sounds like you are leaning toward a truck PS pump, which, IMHO, would be the best way to go. Lots of trucks use a remote reservoir mounted above pump level, about a 1" suction hose out the bottom to the pump and of course the return line back in the side. If the reservoir off the truck isn't big enough for you, just make a bigger one.

 

[MJPetersen]

If I remember correctly, the old piston compressors for the AC could absorb up to about 15 hp and the clutches lived a long time doing it too. That would be a few gallons of oil my calculation and that is born out in the capacities that Surplus was giving for their units. But I did not see any tiny units like 2-3 g/m.

Does anybody know what the current draw is for one of these electric clutches?

 

[sampathkp]

If I remember correctly, the old piston compressors for the AC could absorb up to about 15 hp and the clutches lived a long time doing it too. That would be a few gallons of oil my calculation and that is born out in the capacities that Surplus was giving for their units. But I did not see any tiny units like 2-3 g/m.

Does anybody know what the current draw is for one of these electric clutches?

Friends..
I am from India.. Did anyone got answer to this question ? "Anyone run a hyd pump w/ a 12V clutch"
I am on a project in implementing similar Setup here with one of my Jeep Engine (65Hp Diesel).
Application : For Tipper ( 2 ton Tipping capacity).

I used Mahindra tractor,Hydraulic Pump, and Took out a 12V Electric Clutch Pulley ( AC compressor Pulley); Belt Driven from Fan pulley. Without Load the Pump Runs.
But With Load , I yet to test ( work still in progress).
So need your help..if These AC-Compressor Clutch Pulley's are Strong enough to transfer enough Torque for the Hydraulic pump, in full load ?
I am worried about the Clutch will slip when fullely loaded..

 

[J_J]

These clutch pumps are designed for 12v clutch operation. Why would they slip? A relief valve should be used with the pump.

https://www.surpluscenter.com/item.asp?item=9-1737-S&catname=hydraulic

V-belt clutch.

https://www.surpluscenter.com/item.asp?item=9-1738&catname=hydraulic

 

[dfkrug]

These clutch pumps are designed for 12v clutch operation. Why would they slip?

The concern I had when I started this thread is would an AC compressor
clutch transfer enough torque to a hydraulic pump? An AC compressor
does not require as much torque as a hydraulic pump. I did not find
anyone here who successfully mated an AC comp clutch to a hyd pump.

JJ, the products you list from SurplusCenter are ideal for this application,
but they are well north of $600. I like to use salvage where I can to save
money.

Since this is one of my "B-list" projects, I have not made tons of progess
in the past year or so, but I did do this:

> I got an Infiniti Q45 PS pump (free), which is very compact, but prob
only delivers 1500psi, and the reservoir is Very small. I have not tested it.
> I acquired another Fenner 12V hydraulic "power-pack" for $50, from a
TommyLift I salvaged. This thing has a valve, reservoir, and enough
flow/pressure, but is quite large and would require 100A from my battery.
> I acquired a DOA John Deere riding mower for the parts (free). I really
like the 12V PTO clutch these units use, which can be bought used for
about $50-75. See here:
john deere , stx38. electric p.t.o. clutch | eBay
I really like this approach, using an inexpensive low-disp Barnes pump.
It turns out, the STX38 was easily fixed and too nice to salvage. I sold it,
and would consider buying a used JD 12V PTO clutch.

 

[thomastractorsvc]

My dad has a 64 Chevy 1/2 ton 4x4 with fisher plow 7.5 ft runs off a GM power steering pump and a canister filter from a cat loader converted to a reservoir mounted under the hood, holds about 1/2 gallon. I am 42 and my Dad been running this setup since before me and it works fine.

 

[J_J]

dfkrug,

The Barnes hyd pump that I posted earlier, only requires 6 HP, and on my engine, it is fan belt driven, and runs all the time the engine is running. It will pump 3 GPM at 3000 psi. If you have no load on the pump, the pump requires almost no HP.

What would you expect this pump to do. It does all the steering, and lift on my Power-Trac, and it will lift about 1200 lbs. The belt that drives the pump also drives the alternator. The relief for the pump is on the joystick valve.

 

[dfkrug]

The Barnes hyd pump that I posted earlier, only requires 6 HP, and on my engine, it is fan belt driven, and runs all the time the engine is running. It will pump 3 GPM at 3000 psi. If you have no load on the pump, the pump requires almost no HP.

Yes, an always-running pump (like a PS pump) is an option that I have not
ruled out (see above). However, being able to turn off the pump
electrically is desirable, since it will be rarely used, and I would like to preserve this vehicle's limited ability to go at highway speeds (60hp).

I was leaning toward the 12v power pack for my dump bed primarily to avoid
having to add an additional sheave to my harmonic balancer pulley.

 

[Maximus agri]

I am considering the use of a 12V clutch, like you see on your car's
AC compressor, to run a hydraulic pump. The pump would be about
1/5 cu in/ rev, and I would like to be able to get 1500psi out of it.

Anyone try that? I am concerned that the belt(s) and electromagnetic
clutch be able to transfer enough torque to the pump without
slipping.

We have a Samil 20 ex army truck. We used it to spray Liquid fertilizer and the booms were operated with hidrolic power. The pump is very small and maybe 2, 1/2" square. It fit inside a squaretubing of about 2and a half inch. Then it is bolted on the engine casing. Also a 3 inch pully on the pump and then a normal single v belt using the extra crankpully slot. The hidrolic pump could lift the truck rear up by lowering the boom frame onto a stand or treetrunk cut for that job. We also fitted a 3 point hitch at the front and loaded many round bales on trucks. Never had a belt slip when doing it. Only problem was the pump was always running as soon as engine started. So we are now looking into fitting ac clutch to minimise wear on the pump as we are using the truck now as firefighter. And don't use the hidrolics as much