3500 PSI two-stage hydraulic pump??

I'm wondering where I find a two-stage hydraulic pump that can run at 3500 PSI. I see many log splitters advertised with such pumps - BUT - when I go to the actual companies that make the pumps - I can't find any rated over 3000 PSI. Barnes, MTE, Haldex, etc.

What's going on here? Are the sales ads bogus?

I'm asking because I want to build a 50 ton log-splitter that I can also use as a crawler track-press. I've seen it done and know it works with small tracks. I've seen some Deere 420 and 1010 tracks, as well as Oliver-Cletrag OC4 done in a HD 35 ton log-splitters.

My tractor mounted splitter has a 5" cylinder with a Prince PTO pump that only makes 2000 PSI. Fine for any wood I split, but technically it's only got 19 tons of force.

I want to build a splitter with a 6" cylinder and a 3500 PSI pump. That will give 49 tons of force.

Here"s one on ebay.


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Hydraulic Pump 2-stage 11 gpm 3500 psi 3800 max rpm 1/2" outlet 1" inlet

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Hydraulic 2-Stage Pump - 11 GPM
Hydraulic 2-Stage Pump - 11 GPM
MTE 2-Stage Logsplitter Pump
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Manufacturer MTE
Unit
SKU 257-011
CU In:
Shaft: 1/2 x 1-1/2
GPM: 11
Rotation: CW
Inlet Port: 1" Tube (updated)
Outlet Port: 1/2" NPTF


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Heres"s another @ daltonhydraulics.com

* In-Stock *
11 GPM 2-Stage MTE Logsplitter Pump Features:

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Made in the USA
Built to OEM Specifications to Take On the Toughest Splitter, Press or Baler Applications
CAST IRON Housing
Redesigned 4-Bolt 4F17 Mounting Flange for Universal Interchange with Other Brand Pumps
Proven Reliability
Outstanding Performance
Original equipment replacement for Speeco, MTD and Ramsplitter logsplitters.
Performance:
11 GPM Low Pressure to 500PSI
3 GPM Hi-Pressure to 3,500PSI
6HP Gas Engine Recommended (5HP Electric)
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MTE 2-Stage Hi/Lo pumps feature an internal unloading valve that diverts high-volume flow at minimum pressure when high-pressure flow is required. The pumps are designed to direct couple to gas engines or AC electric motors that turn up to 3800 RPM. The unloading feature assures that a small, efficient motor can be utilized effectively.

Yes, I saw that ad. Note it has the MTE pump. When you go to MTE and download their pump data sheet - they only rate that same pump at 3000 PSI max. Not 3500 PSI. I'll trust what the company rates it before I'll believe some seller on Ebay.

That's part of my confusion. I find many such ads showing 3500 PSI when NOT posted by the companies that actually make the pumps.

Could you move up to an 8 inch hydraulic cylinder and still use your existing 2000 PSI PTO pump? That would get you 50 tons of force too. Cost start to go up with higher pressures.

A different cylinder should be less expensive than a new pump, especiall a used/salvage cylinder. Will you build a new 50 ton press frame? 50 tons might wreck your 19 ton log splitter.

A 50 ton bottle jack, or a Port-A-Power system pump could also work for occasional use.

It's not for my tractor mounted vertical splitter. I have a big home-made horizontal splitter I put together 30 years ago. I'm sure it would handle 50 tons of force. At present it has a single state 23 GPM gear pump and a 16 horse twin-cylinder Wisconsin engine along with a 5" cylinder. I want to beef it up with a higher-pressure pump and larger cylinder. Being low to the ground, it would be perfect for dragging crawler tracks over.

Main issue for now it just finding out if the 3500 PSI pumps actually exist -or it's just a result of bogus advertising.

Jde. You have me confused.(easy to do some time).You may NOT want to respond for being ostracized for association .If you recall,when we were doing the pins & rollers on the O.C.46 I talked about using or log splitter for removing pins & Bushings. You advised AGAINST such an endeavor although you said you knew of a guy who did the deed with his log splitter.You also mentioned the neighbor guy( at least I thought it was a neighbor fellow) who bought a Hyd track repair station from J.D where you worked.If his repair business hasn't worked out for him, it may be of benefit for you to see about purchasing the station from him.We found out the way we did the job wasn't that difficult at all.We put the crawler through a lot of digging, pushing etc and the pins are still TIGHT, Hope you found a different way of using the log splitter then when we asked . LOU

http://www.hydraulicdesign.com/cpg/displayimage.php?album=8&pid=42#top_display_media

3500 psi pump www.hydraulicdesign.com

what about the other ad?

It didn"tcome from ebay.

try here
Untitled URL Link

Try northern tool
Untitled URL Link

Those higher pressure ratings are usually an
INTERMITTENT rating..that is: for only a second
or 2 of every minute. Also, try to find a valve
rated for 3500 PSi.
If using a 5 inch cylinder, be sure to size hose
and valves for the flow! My splitter has a 5 inch
cylinder, with a 3-1/2 inch rod. I'm putting 12
GPM in the rod end, which moves it fast, and the
velocity of oil coming out the piston end, on the
retract cycle, is over 30 GPM. In order to not
restrict flow, and slow the cycle, I used a valve
rated 30 GPM, and 3/4 ID hoses and fittings.
The splitter has a 14 horse Wisconsin 2 cylinder
engine, running at 2400 RPM, with a Vickers V20-6
pump, 6 gpm at 1200 rpm, 12 gpm at 2400 rpm.

I recommended against it?? Are you sure? That usually would not be in my nature - at least not on this forum. I remember discussing a 420 Deere I had - that was pin and bushed in a log splitter. I also remember several "nay-sayers" on the subject - but I hope I wasn't one of them. That is . . . unless I was in some weird mood at the time that I don't recall now.

Generally speaking, I'm usually all for anyone doing anything for themselves - as long as they are aware of their own limitations.

If you find my "negative" comments in the archives, I'd like to see them. Like I said - maybe I WAS in a weird mood - or maybe you've got my comments confusted with somebody else?

I'm going to build this splitter and do my own pins and bushings for a Deere 1010. I am also going to make the pins and bushings from oil-hardened rod and DOM tubing.

Your memory of me talking about a local guy with a small track press is 100% correct. Must of been awhile ago though since he died 2-3 years ago. Young guy too. Maybe in his 30s? I never had the nerve to call is family to ask what happened to him - and the track press. Old farm family in Delaware County, NY.

The irony is - that track press came from the Deere dealership where I worked. I wanted to buy it but my boss refused to sell it to any of us grease-monkeys. It was our small press and was only good for machines up to 1010 size.

One weekend, my boss had it trucked to the scrapyard. Then this farmer guy found it and brought it home for $50. I wish he was still around and I'd love to have that press.

You are looking for a pump that is not conventional as the majority of pumps and cylinders are around 2500 psi. as you obviously know. So it might be worth your while to look at putting two smaller conventional cylinders in tandem to achieve the 50 ton force. Just a thought. I work on molding presses that for the most part have gone away from one big cylinder to two smaller ones using more conventional pressure to achieve their rating. Those that use higher pressures, use a high volume pump to move the cylinder and then switch to a smaller high pressure pump to hold the cylinder at the higher pressures once full movement is achieved. Most of these are rated at 3000 psi. working pressure although they can go higher, but that means a shorter life.

Jde. My Mind isn't what it use to be. Found this in the archives."In regards to pressing them out yourself?usually takes at least a 100 ton press for small tracks and 300 ton is more usual. That being said I've got a Deere 420 crawler here that a guy did all his own pins and bushings with a 50 ton log-splitter. He made a custom cradle and it worked. I assume the bushings were not as tight as new ones would be in new track chains. If the guy had asked me first, I'd have told him that his log splitter wouldn't work.So, you never know"

The other one we haven't found was where you told us the one you used to use at John Deere, would push the pins out with such force it put holes in the concrete wall across from the machine and our idea was dangerous to make such a machine. I think it was deleted when we got into a heated discussion with one of the other posters( not you) about such an endeavor.

We even went online and found a company across the pond that made a portable pin pushing tool (hydraulic) for field work for smaller machine tracks.They found out that we wouldn't supply them with a gazillion dollars to buy one (can't remember their outragous price) so we were forced to do what we did the hard way.
We're sorry about the passing of your friend who bought the John Deere press. I'm not sure it would be disrespectful if you were to ask about the press?Seems as though someone will end up with it,if it still isn't being used there, or worse sold for scrap, and no use to anyone.

We found a sight where you can look at for the pumps, it does give you specs and PSI measurements and ratings.
hope it helps.

http://www.twin-hydraulics.comSAE_A_HONOR_Pumps.html

or Bailey.net has a few with specs.

Warmest regards,
LOU & Victor
link for fist web site here

Yeah, it seems often when somebody posts a description how they've done something difficult - that others have not - the cr*p and BS starts flying. It can be a guy doing his own track bushings, his own diesel injection pump, wiring in the house, etc.

Seems to be an army of people waiting to jump in and complain when some of us do things ourselves instead of relying on the "experts." Maybe it's a case of "skill envy." Seems some suffer from the "false authority syndrome."

Seems odd though given this context of an antique-tractor forum where I hope - many do have skills and do their own work.

J de. Your right as always. Fools rush in where wise men fear to tread.People need to do for themselves (if at all possible) and if not, then get an opinion from those who did the project in the past WITH EXPERIENCE*such as you* now if you think we could be of help, sure would be honored to give out information as to how we did the re-pinning and bushing install on our O.C.46, or any other places we dealt with for parts or hydraulic places. Warmest regards LOU & VICTOR.
PS E-mail is open