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Fan type for top of case?

post #1 of 8
Thread Starter 
I have had 2 thermaltake 140mm fans that came with my case that i mounted on the top, i know there cheapo crappy but both of them started playing up within 4/5 months of use.

I heard that there was some type of bearing fans that should or should not be used as a top case fan?
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post #2 of 8
Quote:
Originally Posted by MaxFTW View Post
I have had 2 thermaltake 140mm fans that came with my case that i mounted on the top, i know there cheapo crappy but both of them started playing up within 4/5 months of use.

I heard that there was some type of bearing fans that should or should not be used as a top case fan?
Sleeve bearings are generally not happy when mounted horizontally as the oil inside tends to run out of the baring surface and reduce motor life. If you keep them oiled though they can run horizontally without much issue, they just require slightly more frequent maintenance.
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post #3 of 8
Yup. Sleeve bearings wear out quickly when mounted horizontally. If you want to replace the fans, get some with ball or x-fluid/lube-x bearings.
If you want to get your current fans to last a little longer, follow this guide - http://www.overclock.net/air-cooling...-fan-work.html
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post #4 of 8
Personally I've had good luck with Yate Loons and Scythe SlipStreams even though they're both sleeve bearings. Oil them before installing and then every 6-12 months and you should be fine. I run low RPM so theoretically they could wear more or need oil sooner at higher RPMs.
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post #5 of 8
Heck, try lubricating your fans and you may get a little more life out of them. See my sig.

Then block off the rear top position and put the better of your two fans in the top forward position with the output pointed down. That will feed fresh air to your cooler and drop your temps. Click on my name to see a schematic of how this works.

Here's my rig:



I practice what I preach. Note the rear grill is gone. No exhaust fan needed. The air just quietly flows out.
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post #6 of 8
Id get some NMB ballbearing server fans for horizontal use. All my horizontally mounted fans are ballbearing types. Also I have some lubing tips in my sig as well as ehume. in case you wanted to just lube them, but Id definately recommend ballbearing type fans for horizontal use.
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post #7 of 8
Thread Starter 
Ya my fan is a sleeve bearing type, I dont want to fix it though coz its pants and i would rather get a proper one

Also @ehume my top fan will not be very effective at all if it were blowing air down, The PSU is top mounted so theres quite a gap ill say about 7-8 inches apart, Really it would not be worth it and i put a quiet fan on the top as a exhaust.
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post #8 of 8
Quote:
Originally Posted by MaxFTW View Post
Also @ehume my top fan will not be very effective at all if it were blowing air down, The PSU is top mounted so theres quite a gap ill say about 7-8 inches apart, Really it would not be worth it and i put a quiet fan on the top as a exhaust.
Yup.
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