Description
A jaw coupling is a type of coupling designed to transmit torque while damping system vibrations, which protects other components from damage. Jaw couplings are considered the most popular couplings utilized in industry for relatively small shaft sizes. Jaw couplings are composed of three parts: two metallic hubs and a insert, which is referred to as a “spider.” The three parts press fit together with a jaw from each hub fitted alternately with the lobes of the spider. The curved jaws of the hubs reduce deformation of the spider to maintain the zero backlash fit. It is important to note that most manufacturers sell the components of a jaw coupling separately. Most applications will require the hubs to have different bore sizes, as the shafts are unlikely to be the same size.
