Frictionless (Magnetic) Bearings

[tjnlsn255]

I would like to start this thread to have talks about frictionless (magnetic bearings).....

I want to find out in a vertical shaft application how you stabalize the wabble of the shaft without using a collar that would cause friction....

My understanding is that magnetic bearings are just two strong magnets with North facing North or South facing South.... each pair would be a bearing.....

Any help and info would be greatly appreciated....

Hopes and Dreams....

Tj

[elias]

Hi

As far as I know the commercial magnetic bearings use electromagnets and not magnets, and consume power and are active magnetic bearings. You can find them on SKF Group - Bearings and units Lubrication solutions Mechatronics Seals Services Condition Monitoring Linear Motion - SKF.com . They have a reason for this, but I don't not quite understand this.
And to mention that this post of yours was a very synchronous event as I was searching for minimal friction bearings, yesterday.
This is Aaron's thread about passive magnetic bearings:
http://www.energeticforum.com/renewa...c-bearing.html

Depending on the type of application we want, roller bearings, or ball bearings with different sizes might be efficient, Roller bearings are the best if we want our bearings to perform well in conditions where a side way force is applied.

This link might be useful: Rolling Bearing Friction

Elias