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Permanent Magnet Bearing Breakthrough

By Frank Tobe | April 22, 2014

To date, PM bearings could hold the shaft along one axis only. In addition they were damping. As a result, electromagnetic bearings were used.

We designed (and recently applied for a US patent) a new type of PM bearing that rigidly holds the shaft in both axial and radial directions. This means that it is rigidly stable in all possible directions. Our design overcomes limitations described by the Earnshaw’s theorem. It is a functionally complete bearing with outer ring made to fit the equipment it is attached to.

PM-Bearings

All of our bearings are precision bearings and their precision parameters remain unchanged during their entire life.

Their life is up to 30 years and their reliability is very high.
Here are the functional specifications:
• Rotate at speeds from 1 to 100,000 rpm
• Carry the same loads as steel bearings
• Function quietly, produce no friction, require no greasing and no maintenance
• Emit no RFI
• Function in water and in harsh environments

These bearings can successfully replace electromagnetic bearings and neither electronic control bloc, nor back-up bearing would be required. The cost would be at least 3 times lower.
These bearings can also replace radial-thrust bearings, conical bearings or precision ball bearings.

These bearings may be applied wherever clean, no grease vapors and no fumes environment is required, e.g. food industry, medical instruments, vacuum pumps, scroll compressors, underwater pumps, compressors for refrigeration industry, power generators, electric motors, petroleum refinement, natural gas handling, etc.

Our bearings will allow you create machinery and equipment of the highest quality.

Art Shaefer
[email protected]
(310) 830-0587

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Filed Under: Bearings, MECHANICAL POWER TRANSMISSION, MOTION CONTROL
Tagged With: pmbearings
 

Comments

  1. Kate says

    May 7, 2017 at

    I wonder if they have spoken to the wind energy folks whose biggest problem seems to be bearing failures??

  2. Ton says

    October 27, 2021 at

    Are they suitable for plasma processes?

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    • Fastening • joining
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    • Warehouse automation
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