A magnetic bearing is a type of bearing that uses magnetic forces to support a rotating shaft without physical contact. This technology eliminates friction, which can lead to wear and tear, allowing for smoother operation and longer lifespan. Magnetic bearings are often used in high-speed applications, such as in turbines and flywheels, where traditional bearings might fail. These bearings can be classified into two main types: active and passive. Active magnetic bearings use sensors and control systems to maintain the position of the shaft, while passive magnetic bearings rely on permanent magnets. Both types offer advantages in terms of efficiency and maintenance compared to conventional bearings.