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

Jaw Couplings require no lubrication and provide high dependability for light to medium duty applications with great alignment of equipment and no requirement for torsional dampening.

In regular operating conditions there is no metal to metallic contact so the life of the hubs is practically indefinite. Nevertheless, in a catastrophic failing of the component the load would still be carried by the hubs providing a degree of failure protection. Jaw couplings are resistant to oil, dirt, moisture and grease.

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

The standard element materials is NBR (N)-‘Synthetic Rubber’. It really is highly flexible, oil resistant and the torsionally softest of the component options. It has a heat operating range suitable for most commercial applications and permits up to at least one 1 degree misalignment capability of the connected shafts. NBR is the most economically priced option.