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1,000,000 rpm

  1. Nov 15, 2008 #1


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    Up to now, industrially-deployed motors have normally reached 250,000 revolutions per minute. Now, however, researchers from ETH Zurich’s Department of Power Electronics have developed a drive system in cooperation with its industrial partners that can achieve over 1,000,000 rpm.
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  3. Nov 15, 2008 #2


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    That's pretty cool. The first thing I thought was "how small is this thing going to be?" It is indeed tiny. I am most impressed by the bearings. Even with a ID of 1 mm, the dN for those things would still be 1 million which is pretty sporty.

    It's a shame they can't go into a bit more detail in the story.
  4. Nov 17, 2008 #3


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    I'm surprised they didn't use some sort of air bearing.
  5. Nov 18, 2008 #4


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    I'm not sure if I want my dentist to find out about this or not.
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