
Couplings serve as essential mechanical components designed to connect two rotating shafts within mechanical systems, enabling the efficient transmission of torque and rotational motion between driving and driven equipment. Their core working principle lies in bridging shaft gaps while compensating for minor axial, radial and angular misalignments that inevitably occur during equipment operation, installation or long-term use. Beyond power transmission, couplings effectively buffer mechanical vibration and absorb impact loads generated during startup, operation and shutdown processes, avoiding excessive stress concentration on shafts, bearings and other precision parts. This buffering and compensation function greatly reduces mechanical wear, lowers operation noise and prevents structural damage caused by misalignment. By maintaining stable power transmission and mitigating mechanical fatigue, couplings significantly extend the overall service life of mechanical equipment and ensure the continuous, safe and efficient operation of various transmission systems in industrial machinery.