Seagates recent (May 28, 2002) US patent entitled "Antiwear lubrication coating for bearing surfaces for hydrodynamic fluid bearings"
explains very well the advantages, the structure and the operation of fluid disc drive bearings. Go here:
http://patft.uspto.gov/netahtml/srchnum.htm
and enter this patent # : 6394654
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Seagates recent (May 28, 2002) US patent entitled "Antiwear lubrication coating for bearing surfaces for hydrodynamic fluid bearings" explains very well the advantages, the structure and the operation of fluid disc drive bearings. Go here: http://patft.uspto.gov/netahtml/srchnum.htm and enter this patent # : 6394654