The difference here is that rather than low-friction sapphire bearings, this motor uses zero-friction magnetic levitation using pyrolyzed graphite discs. The diamagnetic material hovers above a ...

A sharpened bicycle spoke serves as an axle, and clever magnetic bearings provide near-zero friction rotation. The stator coil comes from an old solenoid and is driven by a very simple two ...

Magnetic bearings and electrodynamic systems are innovative technologies that utilize magnetic forces to support and stabilize rotating machinery without the need for traditional mechanical bearings.