Sleeve is especially bad these slim coolers, since the systems will normally be oriented horizontally. This leads to gravity pulling the lubricant down off the bearing of the fan.
I think rifle bearing would have been better, but it'd cost a bit more.
One of my machines, housed in an old CoolerMaster CM690 II Advanced, has a bunch of sleeve bearing fans. They're not bad, and after re-lubbing the fans recently things are just fine. Couple of those fans are 6+ years old, too.
Tried to upgrade it to a Delta but the PWM software rejected the Delta's sensor...it's a .45a fan replacing a .16a fan, so the cooling curve is probably different.
I couldn't agree more. Sleeve bearing fans are OK for intake and perhaps exhaust fans, but heatsinks? It's going to dry the shaft out in a few years at best (assuming the most desirable sub 40c operating environment.)
Maybe that is why it has a laughable life expectancy. 40,000 hours is FOUR YEARS.
I expect much better from Silverstone. This is a downright embarrassing addition to their product portfolio.
I think Anato's analogy is rather apt. You are confusing sleeve bearings with, lets call them, modified sleeve bearings. Those bearings actually have designs that pull the lubricant back to the center when spun.
The important thing to note is Intel coolers generally have pretty good fans. I've never seen one go bad, even when the fins below are choke-full of dust.
"65 W thermal conductivity"? I somehow expected editors here to be not too lazy to write "thermal conductivity sufficiently low to dissipate 65 W" instead of measuring thermal conductivity in Watts.
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17 Comments
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nwarawa - Friday, December 9, 2016 - link
"...Sleeve bearing...$33..." Nope. Try again, Silverstone. You don't get to expect $33 for something equal or inferior to free.nwarawa - Friday, December 9, 2016 - link
Sleeve is especially bad these slim coolers, since the systems will normally be oriented horizontally. This leads to gravity pulling the lubricant down off the bearing of the fan.LordanSS - Friday, December 9, 2016 - link
I think rifle bearing would have been better, but it'd cost a bit more.One of my machines, housed in an old CoolerMaster CM690 II Advanced, has a bunch of sleeve bearing fans. They're not bad, and after re-lubbing the fans recently things are just fine. Couple of those fans are 6+ years old, too.
Samus - Friday, December 9, 2016 - link
I just relubed an AVC fan in my NAS, again.Tried to upgrade it to a Delta but the PWM software rejected the Delta's sensor...it's a .45a fan replacing a .16a fan, so the cooling curve is probably different.
Samus - Friday, December 9, 2016 - link
I couldn't agree more. Sleeve bearing fans are OK for intake and perhaps exhaust fans, but heatsinks? It's going to dry the shaft out in a few years at best (assuming the most desirable sub 40c operating environment.)Maybe that is why it has a laughable life expectancy. 40,000 hours is FOUR YEARS.
I expect much better from Silverstone. This is a downright embarrassing addition to their product portfolio.
Morawka - Friday, December 9, 2016 - link
gravity wont effect it when it's spinning..flyingpants1 - Saturday, December 10, 2016 - link
Umm, yes it will.lazarpandar - Saturday, December 10, 2016 - link
This comment reveals one hell of a misunderstanding of basic physics.Anato - Saturday, December 10, 2016 - link
You should try it too! Take office chair for spin. Then ask assisting friend to thrust you through space. :PMorawka - Saturday, December 10, 2016 - link
you should work on your analogies.nwarawa - Monday, December 12, 2016 - link
I think Anato's analogy is rather apt. You are confusing sleeve bearings with, lets call them, modified sleeve bearings. Those bearings actually have designs that pull the lubricant back to the center when spun.nwarawa - Monday, December 12, 2016 - link
But to say "gravity doesn't effect it while spinning", indeed, shows an fundamental flaw in your understanding of basic physics.xenol - Friday, December 9, 2016 - link
Looks like it'll perform barely better, if at all, against Intel's stock cooler.Samus - Sunday, December 11, 2016 - link
The important thing to note is Intel coolers generally have pretty good fans. I've never seen one go bad, even when the fins below are choke-full of dust.willis936 - Monday, December 12, 2016 - link
If nothing the intel cooler fans are very good at incising fingers.JanW1 - Friday, December 9, 2016 - link
"65 W thermal conductivity"? I somehow expected editors here to be not too lazy to write "thermal conductivity sufficiently low to dissipate 65 W" instead of measuring thermal conductivity in Watts.yannigr2 - Wednesday, December 14, 2016 - link
Price is $17.42 without the taxes. At least that's what I learned.