The following information and facts should be presented to when putting an order to be sure the right selection of the disc coupling:
Application and form of duty
Type of driver (engine, motor, turbine, and so forth.)
Velocity and horsepower
Sort of driven
Shaft sizes and separation
Room limitations for major diameter and length
Type of fit (Interference fit default, clearance match and shaft locking device planning obtainable upon request)
Specific prerequisites (vertical mounting, drop out center, flange mount, electrically insulated, API-610 up to three,800 RPM, shear pins, balancing, and so on.)
Angular misalignment, axial misalignment, and rated torque are all relevant to the coupling’s capability to accommodate application torque above any time period of time. As illustrated within the following charts, once the application torque increases to 50% with the coupling capability, the potential from the coupling to accommodate angular misalignment to is decreased. The identical holds accurate for your capability to accommodate axial misalignment.
Selection Procedure
one. Select the coupling type.
2. Select the driven machine service element SFA
3. Select the driving machine service issue SFD
Care should be taken once the driving machine is aside from a regular electric motor or turbine. 
Some engines will impose further fluctuations around the drive program and allowance must be created accordingly. A torsional coupling might be necessary for diesel drives.
