Have you ever seen a biconical air bearing? No? You are not alone. Here it is:
Two concentrical parts, the outer ring is fixed, the inner one is moving
Have you ever seen a biconical air bearing? No? You are not alone. Here it is:
Two concentrical parts, the outer ring is fixed, the inner one is moving
AudioCirc.com 
This is the Eitzenberger type EZ-1320 airbearing. it costs ca. €1500,-
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The Caeles uses a special version of this air bearing.
E.
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