The Daikin-McQuay GC5021C Motor Coupling (0.5" x 1.25") is a precision-engineered component designed to connect the motor shaft to the driven equipment within HVAC systems. It transfers rotational power while absorbing minor misalignments, reducing wear and vibration. Commonly used in Daikin-McQuay air handlers, fan assemblies, and pump units, this coupling helps maintain smooth, reli... https://www.partshnc.com/motor-coupling-05-x-125-for-daikin-mcquay-part-gc5021c