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What are Hydraulic Fans? (Corsair series)

post #1 of 5
Thread Starter 
I'm trying to research what hydraulic fans are but nobody mentions them, just the usual sleeve vs ball bearing, or hydro/fluid-bearing.
http://www.gamersnexus.net/guides/779-computer-case-fan-bearing-differences

I need a horizonally mountable fan because my stock sleeve type fans in my NZXT case are rattling and making noise now.

I wanted to switch to a better ball or fluid type, and found these super popular corsair ones, but they are "hydraulic" and I'm not sure what that is.

I'm looking at the AP140 or SP140 Corsairs.
http://www.newegg.com/Product/Product.aspx?Item=N82E16835181028
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post #2 of 5
Usually the hydraulic bearing just means that it's a form of fluid bearing, AKA, no balls, only two sleeves with the fluid between them.
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post #3 of 5
they've been known to also have significantly greater life, and reliability not to mention the efficiency too
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post #4 of 5
Thread Starter 
How would it compare to something like the Silverstone Air Penetrator 141, which is the fluid dynamic bearing and flows pretty well. Both are the same price.
Edited by 00firebird - 6/3/13 at 6:26pm
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post #5 of 5
Fluid dynamic and hydraulic are essentially the same bearing type with two different names. They work on the same principle, but I believe one has a helical channel that forces the fluid to "flow" within the bearing itself. The main benefit in your case would be that the fluid is kept from settling due to gravity. The problem is I've seen helical channels on fans marketed as both fluid dynamic and hydraulic, so it seems like manufacturers don't even know.
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OCZ Fatal1ty 750w Xigmatek Utgard Window 
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