A jaw coupling is a type of general purpose power transmission coupling that also can be used in movement control (servo) applications. It is designed to transmit torque (by connecting two shafts) while damping system vibrations and accommodating misalignment, which protects other elements from damage.
Jaw Couplings are among the first and even now hottest elastomer couplings in the globe because of their inherent simplicity. Two similar hubs with 3 encounter lugs are connected through a celebrity shaped element, sometimes known as an put in or spider. The 3 piece style makes them easy to work with and well-known on applications such as pumps, enthusiasts, blowers and compressors.

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

In normal operating conditions there is absolutely no metal to metal contact therefore the life of the hubs is virtually indefinite. However, in a catastrophic failure of the component the load would still be carried by the hubs providing a degree of failure safety. Jaw couplings are resistant to oil, dirt, moisture and grease.

Specific element materials can be found to achieve optimum performance for the operating 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 includes a temp operating range suitable for most industrial applications and allows for up to at least one 1 degree misalignment capability of the connected shafts. NBR may be the most economically priced option.