For rotating machinery, what type of bearing is currently the most advanced?
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Is it air or magnetic levitation? Are there any others?
It seems to be a tilting pad bearing, a Kingsbury bearing. Maglev? I haven’t heard much of it. I must be ignorant.
It’s not the latest model that is necessarily the best; the choice also depends on the operating conditions, and older technologies are mature and reliable.
The most widely used type is the tilting-pad journal bearing. Air bearings are commonly used in low-load, low-expansion machines, while superconducting magnetic levitation bearings represent the latest technology and have not yet been widely applied.
It should vary depending on the temperature of the medium; some machinery requires non-metallic bearings, so there is no way to compare them with metal bearings.
The bearings currently used are sliding bearings: the support type is tilting pad, while the thrust type is Kimbrel or Mitchell； The rolling bearings are SKF; NKA
Superconducting magnetic levitation bearings – in what types of machines have you seen them used?
There is no best, only the most practical!
I agree with the brother on floor 10; the most advanced ones are not necessarily the most suitable. Advanced bearings may require many supplementary conditions, as well as high standards regarding the operating environment and supporting facilities; they are not suitable for use in ordinary equipment.