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  #1  
Old 09-30-2020, 10:33 PM
JBFab JBFab is offline
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Default Large Rod Hydraulic Cylinders

Getting a quote together for building a guy a good production log splitter for his firewood business. Obviously he wants a fast cycle time. I've been looking at a few other commercial units and see they have cylinders with huge rods so that the retract speed is very fast. One of which appears to be 5" bore with a 4.5" rod. Does anyone know where one could get a cylinder like that? I've always thought I have pretty good google-fu, but I'm striking out on such an animal.
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Old 10-01-2020, 12:05 AM
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LKeithR LKeithR is offline
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Can't say I've ever seen anything with a shaft that large compared to the bore. Could very well be a custom build. Makes it expensive for a one-time job but it wouldn't be that big a deal for a manufacturer doing a production run...
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Old 10-01-2020, 04:24 AM
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GWIZ GWIZ is offline
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Quote:
Originally Posted by JBFab View Post
Getting a quote together for building a guy a good production log splitter for his firewood business. Obviously he wants a fast cycle time. I've been looking at a few other commercial units and see they have cylinders with huge rods so that the retract speed is very fast. One of which appears to be 5" bore with a 4.5" rod. Does anyone know where one could get a cylinder like that? I've always thought I have pretty good google-fu, but I'm striking out on such an animal.
At a thousand pounds shipping will likely be more than the cost. (3000 psi)
https://www.surpluscenter.com/Hydrau...er-9-10146.axd

or

https://www.surpluscenter.com/Hydrau...RH-9-20095.axd
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Last edited by GWIZ; 10-01-2020 at 12:14 PM.
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  #4  
Old 10-01-2020, 06:04 AM
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digger doug digger doug is offline
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Use a separate smaller cylinder to push the big cylinder back, the big cylinder
dumps to tank (and sucks from tank) during this.
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Old 10-01-2020, 06:51 AM
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Sounds like a job for toprecycler

I wouldnt have thought it would be shocking expensive, the only part I'd see as being special would be the cap, the tube, piston, seals and rod should be off the shelf.
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Old 10-01-2020, 08:09 AM
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Check out Parker and Miller, both do lots of custom configurations, using various off the shelf components.

Still doean’t mean it will be cheap, however.


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  #7  
Old 10-01-2020, 09:09 AM
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Quote:
Originally Posted by JohnBoy View Post
Sounds like a job for toprecycler



I wouldnt have thought it would be shocking expensive, the only part I'd see as being special would be the cap, the tube, piston, seals and rod should be off the shelf.


My shop could custom build it for sure. But it will not be cheap. But just depends on how much time it would save for the firewood guy and is it worth it to him?


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Old 10-01-2020, 11:54 AM
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Split wood on the return stroke and the owner won't want it so fast.
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  #9  
Old 10-01-2020, 02:15 PM
JBFab JBFab is offline
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Quote:
Originally Posted by digger doug View Post
Split wood on the return stroke and the owner won't want it so fast.
I've looked at that option. It sounds very efficient in theory, but not very efficient from a ergonomic stand point.
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  #10  
Old 10-01-2020, 02:18 PM
JBFab JBFab is offline
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Quote:
Originally Posted by toprecycler View Post
My shop could custom build it for sure. But it will not be cheap. But just depends on how much time it would save for the firewood guy and is it worth it to him?


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I had a feeling a trip to Petoskey might be part of this build. If I give you some desired dimensions could you quote it for me? Another thought I had was if we bought a "stock" cylinder with a smaller rod maybe you guys could modify the end cap and replace the rod with a larger one cheaper than building a new one all together.
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