RW>You could have used a Japanese bearing and had the same quality, but less   
   RW>cost. I used to rebuild IBM hard drives (12" discs) and used a Japanese   
   RW>bearing in place of the original. They were just as good. The bearings   
   RW>that IBM used had to be bought in matched pairs and cost an arm and a leg.   
   RW>I used non-matched bearings and had no complaints.   
      
   Well in some cases "matched bearings" are manditory if one does not want   
   a early failure. I am thinking of my experieces with Gyroscopes used in   
   navigation equipment. They of course spun up much higher speeds than the   
   Old Hard Drives, Up to 24,000 RPM   
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