Spider Coupling
A spider coupling, also known as a jaw coupling or elastomeric coupling, is a mechanical device that connects two shafts to transmit torque while accommodating misalignment. It consists of two metal hubs and a flexible spider element (made of rubber or polyurethane) that sits between them, absorbing shocks and vibrations. The spider element's flexibility allows for parallel, angular, and axial displacements between the shafts.
Here's a more detailed breakdown:
Function:
Spider couplings transmit torque between two shafts, allowing for some degree of misalignment.
Components:
Hubs: Two metal hubs, one for each shaft, with jaws or teeth that mesh with the spider element.
Spider Element: A flexible element, typically made of rubber, polyurethane, or an elastomer, which absorbs vibrations and allows for misalignment.
Benefits:
Misalignment Tolerance: Can compensate for parallel, angular, and axial displacements between shafts.
Vibration Dampening: The flexible spider element helps absorb shocks and vibrations.
Durability: Fail-safe design, meaning the hubs' teeth will still transmit torque if the elastomer wears out.