Jaw type couplings have a specific use, it is a coupling that if it fails will keep running, without damage to equipment until it can be replaced it also can only run at up to 2 degrees out of alignment.

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Jaw type couplings have a specific use, it is a coupling that if it fails will keep running, without damage to equipment until it can be replaced it also can only run at up to 2 degrees out of alignment. It is mainly used as its components dont need maintenance and keeps working if its internal insert fails. The “jaws” then clamp together to keep the coupling in motion but that leads to an immediate increase of vibration due to having no insert to absorb that vibration. Made up of 2 hubs (input and output connectors) and internal “spider” to absorb shock and misalignment, which means the more the misalignment the quicker it wears. These elastomeric couplings are used in high speed low torque applications, motors pumps are the main markets.