Couplings for encoders are precision mechanical components used to connect encoders to rotating shafts, ensuring accurate signal transmission and alignment. These products are typically offered by industrial automation and motion control companies, such as Ruland Manufacturing Co., Inc. (USA), which specializes in shaft collars, couplings, and motion control products. Another notable provider is KTR Systems GmbH (Germany), a global leader in coupling technology, serving industries like robotics, aerospace, and manufacturing. Key products include flexible, rigid, and servo couplings designed to minimize backlash and vibration. These components are critical in applications requiring high precision, such as CNC machinery, medical devices, and renewable energy systems.