Spider / jaw mechanical power transmission couplings can be used for horizontal as well as for vertical shaft connections, for reversing, intermittent service and are electrically insulating.
Jaw-Type (Jaw & Spider) couplings feature two aluminum alloy hubs with protruding lugs known as “jaws” and an elastomer “spider” insert between the hubs. Aluminum keeps the jaw coupling lightweight and decreases the moment of inertia on start and stops.