A jaw coupling is a kind of general purpose power transmission coupling that also can be utilized in movement control (servo) applications. It really is designed to transmit torque (by connecting two shafts) while damping program vibrations and accommodating misalignment, which protects other parts from damage.
Jaw Couplings are among the first and still hottest elastomer couplings in the world because of their inherent simplicity. Two identical hubs with 3 encounter lugs are linked through a star shaped element, sometimes known as an place or spider. The 3 piece design makes them simple to work with and popular on applications such as pumps, fans, blowers and compressors.

Jaw Couplings need no lubrication and offer high dependability for light to moderate duty applications with great alignment of equipment and no requirement of torsional dampening.

In regular operating conditions there is no metal to metallic contact therefore the life of the hubs is virtually indefinite. However, in a catastrophic failing of the component the load would still be carried by the hubs offering a degree of failure security. Jaw couplings are resistant to oil, dirt, wetness and grease.

Specific element materials are available to achieve optimum performance for the operating conditions.

The standard element materials is NBR (N)-‘Synthetic Rubber’. It is highly flexible, oil resistant and the torsionally softest of the element options. It has a temperatures operating range ideal for most commercial applications and allows for up to 1 1 degree misalignment capacity of the linked shafts. NBR is the most economically priced option.