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Any fluid power experts want to help me design a wood mauler?

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Old 09-24-2014, 11:51 PM   #1
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Any fluid power experts want to help me design a wood mauler?

I have a diesel source of 2500psi@8gpm and I want to build a kickass stationary splitter. Multi wedge if possible and 2 speed if possible. I don't know much about fancy valving and the like.
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Old 09-25-2014, 05:29 AM   #2
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I will take a stab at it if nobody else jumps in .
These wood splitters can get pricey and heavy .
Not sure how powerfull you plan to make the splitter ,but 2500 @ 8gpm is on the low side .
Do you know the pump ratings ? it would be great if you could boost to 3000 and somewhere around 20-30 gpm .
All depends on your cylinder size . Most guys use cylinders from an old loader or back-hoe with a rating around 30 - 50 tonnes
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Old 09-25-2014, 08:12 AM   #3
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The pump is a gear type possibly rated 10gpm can't remember. The pto is on my crane truck but there's no tach so I don't know exact rpms and no gauge so pressure also unknown. I don't want a sissy setup so need good power, but also speed of course. From what I can tell it seems a 4" cyl would give decent performance but a 5" might be the real power system, but slow, so my hope was some fancy valving might make up the difference in speed. I read there is a way to route the fluid on the retracting side to the pushing side to speed it up.
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Old 09-25-2014, 08:13 AM   #4
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Or maybe an accumulator? Seems like a good application for an accumulator since there is always some amount of down time while wood is wrestled in and out of the machine. A 20"x5" bore contains about 1.7 gallons of fluid, so a 8gpm setup would stroke the cyl in 13 seconds, a little slow, but how about with a 5 gallon accumulator?

By comparison a 4"x20" cyl would have 1.1 gallons oil and would stroke in 8.2 seconds. Still slow.

I'd really like to get the full stroke in 3 seconds.
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