ETH Zurich Researchers Break 1 Million RPM Motor Barrier

AI Thread Summary
ETH Zurich researchers have developed a motor that surpasses 1 million revolutions per minute, a significant advancement from the typical 250,000 rpm seen in industrial motors. This new drive system is notably compact, raising interest in its potential applications. The bearings used in the motor are particularly impressive, maintaining performance even with a 1 mm inner diameter. There is curiosity about the design choices, particularly the absence of air bearings. This breakthrough could have wide-ranging implications for various industries.
wolram
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http://www.sciencedaily.com/releases/2008/11/081114081213.htm

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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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.
 
I'm surprised they didn't use some sort of air bearing.
 
I'm not sure if I want my dentist to find out about this or not.
 

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