I was wondering what type of fan was on my retail 9600XT -- ie. ? sleeve or ball bearing (I like to put a drop of oil in sleeve bearing fans to make them last), so I pulled the fan off and checked it. It had a label on the back and it turns out it?s neither a sleeve or a ball bearing! A company called ADDA has come out with a type of hybrid-sleeve design that is similar to the fluid dynamic bearings (FDB) used on hard drives -- it?s called a HYPRO bearing (patented). And they have a whole line of small computer fans with these bearings.
From what I gather it?s basically a shaft sealed in a pot of oil and it pumps this oil around using a small groove and rides on the oil hydrodynamically. The HYPRO bearing has the longevity of a ball bearing at ~ 40% of cost with less vibration. According top ADDA?s pdf document the HYPRO bearing design can substantially out last even a ball bearing as the temperature rises.
Cool technology.
From what I gather it?s basically a shaft sealed in a pot of oil and it pumps this oil around using a small groove and rides on the oil hydrodynamically. The HYPRO bearing has the longevity of a ball bearing at ~ 40% of cost with less vibration. According top ADDA?s pdf document the HYPRO bearing design can substantially out last even a ball bearing as the temperature rises.
link
? ? ? and is fitted with the ADDA HYPRO bearing system that provides long life at significantly lower costs than ball bearings. Life expectancy is over 50,000 hours at 25°C.
Cool technology.