3 1/2 in bore cylinder on wood splitter
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LD1
Epic Contributor
To the OP: If all you are doing is re-powering with a different pump/motor combo, it will have the same power as before, assuming your old pump was the same 3000psi as your new one. All you are doing is adding a second stage that will make it faster up to about 650psi of load. So...with the new pump, it should be able to split anything it did before. Which @ 3000psi is about 14.4 Tons.
A 4" cylinder @ 3000 psi would be 18.8 Tons.
But to those who doubt the 22T rating on splitters with a 4" cylinder, well all I can say is PUT A PRESSURE GUAGE ON IT.
We have a 27T 4.5" cylinder splitter. And we had always assumed they fudged the #'s but nevery worried about it because it split everything we asked of it. Well, we did put a guage on it. And it turns out that it indeed does make 3500PSI:thumbsup: Which is 27.8 Tons of force. I guess that is why some MFG's are now selling the 4.5" cylinder units as 28T.
AND 3500 PSI will give a 4" cylinder the rated 22T of force.
But like I sait, there is no sense in arguing about it. Put a guage on it and be sure. But like I said, our huskee 27T w/4.5" cylinder is able to make the 27T mark and then some.
A 4" cylinder @ 3000 psi would be 18.8 Tons.
But to those who doubt the 22T rating on splitters with a 4" cylinder, well all I can say is PUT A PRESSURE GUAGE ON IT.
We have a 27T 4.5" cylinder splitter. And we had always assumed they fudged the #'s but nevery worried about it because it split everything we asked of it. Well, we did put a guage on it. And it turns out that it indeed does make 3500PSI:thumbsup: Which is 27.8 Tons of force. I guess that is why some MFG's are now selling the 4.5" cylinder units as 28T.
AND 3500 PSI will give a 4" cylinder the rated 22T of force.
But like I sait, there is no sense in arguing about it. Put a guage on it and be sure. But like I said, our huskee 27T w/4.5" cylinder is able to make the 27T mark and then some.
J_J
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LD1,
I will have to take your word on that pressure. Do you remember if that was a Prince log splitter valve on that log splitter?
I will have to take your word on that pressure. Do you remember if that was a Prince log splitter valve on that log splitter?
AKKAMAAN
Veteran Member
3000psi is a "magic" pressure rating....higher rated components takes a big $$$ jump....
Haldex-Barnes two stage pumps are 3000psi max rated, so are the Prince valves RD2500, RD3000 and RD4100.....RD3060 with regen is rated 3500psi....
Cylinder works the same way....3000psi is upper end.....especially on larger bores....
So if a manufacturer deliver a logsplitter with a prv set at 3500psi, they are most likely (not all of them) exceeding the rating of the weakest link....
Haldex-Barnes two stage pumps are 3000psi max rated, so are the Prince valves RD2500, RD3000 and RD4100.....RD3060 with regen is rated 3500psi....
Cylinder works the same way....3000psi is upper end.....especially on larger bores....
So if a manufacturer deliver a logsplitter with a prv set at 3500psi, they are most likely (not all of them) exceeding the rating of the weakest link....
Last edited:
LD1
Epic Contributor
No I dont remember what the valve is. It is just whatever came standard on the TSC Huskee loglplitters 8-10 years ago. But it does have the barns pump. And I can say it has split 20+ cord a year since thin without any issues whatsoever.
My only guess is that either the PRV is faulty, or was intentionally set high at the factory. Which may be liely since even 3000PSI rated stuff is built with a good saftey factor. IE: big difference between the burst pressre and the rated pressure.
I suppose a lot of that saftey margin is beacuse these components can be used in systems tha have shock loads. Like on a loader or backhoe where sudden stops or bumps with a loaded bucket causes a pressre spike. These spikes are non-existant in a logsplitter. So maybe they were willing to take that risk??? I dont know. But we have yet to have any issues as a result of running 3500psi.
AKKAMAAN
Veteran Member
I think hoses have burst/rating ratio 4/1, maybe hose guy can verify that....other component should be the same.....going into some research about that.....
I think there is (need to be verified) a distinction between low pressure, medium pressure and high pressure hydraulics, and that 3000psi i the limit between medium and high pressure.....have to check that out too.....
Good point about pressure spikes....
I do think there is a liability issue on this like it is on crimping hoses.....
I have a hard time to see any sense that a manufacturer recommend excesssive pressure on a splitter if components do not cover that on rating.....what does OSHA say about that??
And of course, on the other end of the story, advertising a 28ton splitter as a 35 ton, must be some sort of fraud too....
btw, speeco is marketing two splitters with the same bore diameter, 4.5", one is rated 28ton, and need 3570 psi to make that, and the other is rated 25 ton and need 3150 psi to make that.....kinda funny huh??!! :laughing:
Another thing is that a log splitter is operated very close to the high pressurized components, compared to a piece of heavy equipment, where operator is sitting in a cab, or at least 5-10 ft away from the "danger"...
Anyway I think safety on log splitters can be improved just with using safety goggles, thick gloves, and have hoses/fittings covered with a spray safe sleeve....
David_Kb7uns
Veteran Member
The Speeco (sometimes made for Huskee) splitters were using Energy valves and Barnes Haldex pumps. Since the buyout by Blount, I have been seeing pumps with the Speeco name and slightly different valves, not sure if these are Chinese clones or not.
David Kb7uns
David Kb7uns
Energy sells 2 valves to SPEECO and have for years. One has the internal system relief valve set at 3200 PSI and the other at 3400 PSI. SPEECO has been buying a knockoff of the valve from China for several years now. Energy valves have always had ENERGY cast in the valve body between the two cylinder work ports and stamped in the end of the spring cover. If the valve says anything else, including "SPEECO", it is the valve from China.
NOTE: You can not install a directional control valve downstream from the existing directional control valve in series. The additional valve must be upstream in series for a loglift. This is due to the internal pilot feature of the directional control valve running the splitting cylinder.
Hope this helps.
Steve Hansen
Applications Engineer
Energy Manufacturing Co., Inc.
(319)-465-3537 X-402
(319)-465-5279 FAX
shansen@energymfg.com
NOTE: You can not install a directional control valve downstream from the existing directional control valve in series. The additional valve must be upstream in series for a loglift. This is due to the internal pilot feature of the directional control valve running the splitting cylinder.
Hope this helps.
Steve Hansen
Applications Engineer
Energy Manufacturing Co., Inc.
(319)-465-3537 X-402
(319)-465-5279 FAX
shansen@energymfg.com
AKKAMAAN
Veteran Member
Are these valves specifically made for Speeco, or do Energy market them to public aswell?? Can't see a 3200/3400psi valve in the product list...:confused2:
"What else is new..."
Is that the pilot for detent release you refer to??
Another question:
What is max recommended return port or T pressure on the Energy valve?
Can see 100+psi require consultation with energy....so after consultation...what is the Max allowed T pressure and what is the main reason for that limit???
I like the open info one can get on the Energy web site about products.
Looking very good, and website is user friendly too......
Thank you Steve H, for posting here. Wish more manufacturers was represented here on the forum....
The valves are proprietary to SPEECO. However, our C-908 available to the general public is made of all the same parts. The handle orientation is 180ｰ to theirs, the internal relief setting is lower, but it is adjustable and it is not painted. You can therefore buy parts for the SPEECO, (or Swisher, Brave, MTD, etc.), valves with the ENERGY name from us.
Yes, it's the pilot release for the detent. If the back pressure on the outlet port is high enough, it will actually shift the spool in to the extend position on our "hydraulic kick-out" valves. For this reason these valves will not function correctly with back pressure greater than 200 PSI.
For our other directional valves, the outlet port is structuraly sound up to 2500 PSI. However, at back pressures of 1000 PSI or higher, the valve spool seals will grab the spool with enough force to not allow the spool centering spring to return the spool to the center position without external force on the control lever in the case of a spring centered valve. Therein is the reason we want you to talk to us regarding your intended application with high back pressure.
Thanks for your kind words as well.
Yes, it's the pilot release for the detent. If the back pressure on the outlet port is high enough, it will actually shift the spool in to the extend position on our "hydraulic kick-out" valves. For this reason these valves will not function correctly with back pressure greater than 200 PSI.
For our other directional valves, the outlet port is structuraly sound up to 2500 PSI. However, at back pressures of 1000 PSI or higher, the valve spool seals will grab the spool with enough force to not allow the spool centering spring to return the spool to the center position without external force on the control lever in the case of a spring centered valve. Therein is the reason we want you to talk to us regarding your intended application with high back pressure.
Thanks for your kind words as well.
