A magnetic coupling is a device that is capable of transmitting force through space without physical contact. Attractive and repulsive magnetic forces are harnessed to perform work in either a linear or rotary fashion. In its simplest form, a magnetic coupling is comprised of two components: a driver and a follower.

The driver is the portion of the mechanism connected to the prime mover (motor). Through magnetic interaction, the follower reacts to the motion of the driver, resulting in a non-contact transmission of mechanical energy. This non-contact power transmission has multiple benefits:

• Isolation of Components, which minimizes or eliminates mechanical vibrations through magnetic damping and allows for the insertion of a mechanical barrier between the driver and follower to separate environments and allow operation under pressure differentials.
• High Tolerance of Axial, Radial and Angular Misalignment between the prime mover and load.
• Allowance of Speed Variation and Regulation between the prime mover and load.