What is a Hydraulic Coupling?

1 Answers
MacGemma
07/29/25 11:08pm
Hydraulic coupling, also known as fluid coupling, is a mechanical device used to connect a power source (usually an engine or motor) to a working machine for transmitting rotational power. It was once used in automotive automatic transmissions and has extensive applications in maritime and heavy industries. Working principle of hydraulic coupling: The pump wheel and turbine of a hydraulic coupling form a sealed working chamber that allows fluid to circulate. The pump wheel is mounted on the input shaft, and the turbine is mounted on the output shaft. When the power source drives the input shaft to rotate, the fluid is thrown out by the centrifugal pump wheel. This high-speed fluid then enters the turbine, driving it to rotate, thereby transferring the energy obtained from the pump wheel to the output shaft. Finally, the fluid returns to the pump wheel, forming a continuous cycle of flow.
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