ABSTRACT
A coupling is used wherever there is a need to connect a prime mover to a piece of driven machinery, such as a pump. The primary function of a coupling is to transmit rotary motion and torque from one piece of equipment to another. Couplings may also perform other (secondary) functions, such as accommodating misalignment between shafts, transmitting (or not transmitting) axial thrust loads from one machine to another, permitting axial adjustment of shafts to compensate for machinery wear, and maintaining precise alignment between connected shafts.
