Jaw Coupling

A jaw coupling is a type of general purpose power transmission coupling that also can be used in motion control (servo) applications,Jaw couplings are composed of three parts: two metallic hubs and an elastomer insert called an element, but commonly referred to as a "spider",The elastomer of the spider can be made in different materials and hardness, which allows the user to customize the coupling to best serve their application,Jaw couplings are considered "fail-safe" because, should the elastomer fail or wear away, the jaw coupling hub teeth will mate, much like teeth on two gears, and continue to transmit torque,Like other flexible couplings, jaw couplings are limited in the shaft misalignment that they can accommodate. Too much axial motion will cause the couplings to come apart, while too much angular or parallel misalignment will result in bearing loads that may lead to premature system wear or failure.