Magnetic bearings exhibit virtually no friction, making them highly efficient for rotation. However, to maintain low friction levels, the rotating components must operate in a vacuum, which is essential for preserving kinetic energy over extended periods. In non-vacuum conditions, fluid bearings may be a more practical and cost-effective solution for high-speed applications. The discussion highlights the trade-offs between magnetic and fluid bearings based on environmental requirements. Overall, while magnetic bearings minimize friction, their effectiveness is contingent on specific operational conditions.