In a gyratory crusher, flexible couplings are generally used to accommodate the misalignments and to reduce the transmission of shock loads. These couplings can effectively handle the torque variations and vibrations that are common in crushing operations. Examples of flexible couplings include:
Elastomeric Couplings: These are designed to absorb vibrations and can tolerate considerable misalignments. They are often used because they require minimal maintenance.
Grid Couplings: These offer high torque transmission and good misalignment capacity while providing some damping of vibrations.
Jaw Couplings: Also known as spider couplings, they consist of two hubs and an elastomeric insert (spider), which help in absorbing shock loads and compensating for misalignments.
Each type of coupling has its specific advantages and is chosen based on the requirements of the gyratory crusher's operation, such as the load characteristics, alignment capacity, and maintenance needs.
