Which type of coupling is typically used for high-speed applications?

The metal bellows coupling is the most suitable choice for high-speed applications due to its unique design and construction, which allows for precise angular, radial, and axial misalignment while effectively transmitting torque. The metal bellows provide a robust and resilient connection that minimizes backlash and maintains structural integrity at elevated speeds. This capability is critical for maintaining efficiency and reliability in systems operating at high rotational speeds.

In contrast, flexible couplings tend to accommodate more misalignment but may not provide the stability necessary for high-speed applications where precision is paramount. Rigid couplings, while effective for solid connections, do not allow for any misalignment compensation, which can lead to increased wear and potential failure if installed in systems with slight misalignments, especially at high speeds. Elastic couplings offer some flexibility but may not handle the demands of high-speed rotation as effectively as metal bellows couplings, where the emphasis is on maintaining stiffness and durability under dynamic conditions.