Astral CPVC SCH 80 Coupler Fitting, 2½ to 12 inch

A coupler is a mechanical device used to connect two shafts together at their ends for the purpose of transmitting power. It plays a crucial role in various machines and mechanical systems, enabling the transfer of motion and torque between rotating components. Couplers come in a variety of designs and configurations to suit different applications and operating conditions.

The primary function of a coupler is to join two shafts in such a way that they rotate together while allowing for some degree of misalignment, axial movement, or angular deflection between them. This flexibility helps to compensate for any inaccuracies in alignment or changes in position that may occur during operation, thereby reducing stress on the connected components and prolonging their service life.

One common type of coupler is the flexible coupling, which consists of two hubs connected by a flexible element such as a rubber or metal disc, grid, or jaw. These couplings can accommodate misalignment and shock loads while providing smooth transmission of power between shafts.

Another type is the rigid coupling, which connects shafts directly without any flexible elements. Rigid couplings are used when precise alignment between shafts is critical and there is minimal misalignment expected during operation.

In addition to these basic types, there are specialized couplers designed for specific applications, such as gear couplings, fluid couplings, and magnetic couplings, each offering unique advantages depending on the requirements of the system.