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Old 07-08-2014, 04:54 AM   #19
bncinwv
Montana Master
 
Join Date: Feb 2007
Location: Winfield
Posts: 7,327
M.O.C. #6846
Quote:
quote:Originally posted by jcurtis934

As Bingo says hydraulic units are 5000 lb each. But Bingo...isn't all of the hydraulic lines rated at 3000 psi max instead of 6000 psi like they should have used? I haven't read what is on my lines so I don't know. Please tell me that the jacks use something more than 3000 psi hose. John
I am not a hydraulic engineer, but from my hydraulics class (years and years ago), the hose rating does not directly relate to the lifting capacity. If that was the case, the footprint of each jack would only be a square inch to reach the 3000 pound capacity (less friction losses and other factors). Simply put it is a function of the actuator capacity combined with the cross-sectional area of the lifting cylinder, not the hose rating. In my opinion (definitely not warranted or guaranteed as I have not stayed in a Holiday Inn Express in a while), I would say the engineers have a sufficient safety factor designed in and a 3000 psi hose is adequate. As always, I can be further educated since I know there are some more qualified hydraulic gurus here on the MOC.
Bingo
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Bingo and Cathy - Our adventures begin in the hills of WV. We are blessed by our 2014 3850FL Big Sky (previous 2011 3750FL and 2007 3400RL) that we pull with a 2007 Chevy Silverado Classic DRW CC dually.
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