Clearaudio CMB CERAMIC-MAGNETIC-BEARING - Handbuch (Seite 5)

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The development of the Clearaudio CMB-Bearing (Ceramic
Magnetic Bearing) took several years of research and is based
on a Clearaudio-patent.
Two upon each other arranged homopolar magnetic fields are
acting in a small, defined range and are pushing each other off.
In spite of the small operating range the magnetic fields are
shielded outwards using high efficient materials.
A polished, high-precision axis made out of ceramic is vertically
conducted in a sinterbronze-bushing.
The matching process of these elemental parts for this inverted
bearing principle is realised by hand in highest possible
accuracy.
The CMB-bearing is greased with a full-synthetic oil.
The interaction of these selected parts leads to the effect that
lets your turntable platter float.
The result of using the CMB-bearing are rumble measurements
as low as never reached until now as well as an improved
constant velocity.