Homopolar Electrodynamic Bearings
- A Passive Magnetic Technology -

Products Homopolar Electrodynamic Bearings - A passive technology, Single Row Intermediate Bearing, Double Row Intermediate Bearing, Quad Row External Magnet

Our Homopolar Electrodynamic Bearings (HEDB) can be recieved in three basic designs

  • Bearing with rotor/shaft mounted on the inside
    (a four row HEDB bearing is pictured to the far right)
  • Bearing with rotor/mounted on the outside (not pictured)
  • Intermediate bearing with a hollow shaft mounted in between the bearings - this solution provides optimum performance (pictured as a two row version in the middle picture and a one row version to the far left in the picture above)

The bearing performance can easily be tailored by adding or removing the number of permanent magnets. What effect and what kind of bearing forces are able to obtain are further explained in the PhD Thesis found on the Company page (link)

Our product series of HEDB Passive Magnetic Bearings holds the unique property of performing better with increased rpm. Take off speed is dependant on load on the bearing (explained in the technology presentation - (link)). Our bearings will deliver performance from 5000 rpm but rpm in excess of 50 000 to 150 000 rpm is optimum (naturally depending on required loads)

Most often higher speed will provide the opportunity to reduce sizes, weight and volume - positively affecting the construction.

Magnetal is currently developing a catalogue of high speed bearings. The first HEDB-bearing series are planned to be launched by the end of March 2012.

Magnetal offers tailoring of the HEDB-solution to specific products. Typically this is favorable for larger series or where developing cost is motivated to obtain a key technical solution.

For an explenation of what a high speed application can provide to your operation please look at the FAQ-section or read our partners GESS (Green Energy Storage Solution) that will reduce weight from a traditional low rpm flywheel with more then 98 percent if the rpm is increased to 150 000 rpm.
Link to GESS-White Paper


Energy Storage and Quality,

Micro Turbines, Motors, Spindles, Products and Services

KERS, Kinetic Energy Recovery System for Automotive in F1 and Commercial Cars Wind Power Power Grid, Energy Quality Medicine, Electronic Industry, Process Industry Space applications Flywheel, KERS, Kinetic Energy Recovery System Solar Power, Clean Tech and Envirnomental Friendly, Stabilizing Energy Vacuum, Tooling Compressors and  Micro CHP

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©Magnetal 2012

MAGNETAL AB, 103 96 Stockholm, SWEDEN, Phone: +46 (0)18 418 60 60


Magnetal - Environmental Focus

Magnetal Products, Homopolar Electrodynamic Bearing, Passive Magnetic Bearings

Single Row Intermediate Bearing, Double Row Intermediate Bearings, Quad Row External Magnet Bearings, GESS Green Energy Storage Solution, Bearings, Lager, Clean tech, Green technology, Technology Introduction, PhD Dr Lembke,


Technology Introduction


Greener Solutions

Magnetal Homopolar Electrodynamic Bearings - A Greener solution

Contact : info @magnetal.se