The following info needs to be presented to when putting an order to make certain the right collection of the disc coupling:
Application and variety of duty
Style of driver (engine, motor, turbine, and so on.)
Speed and horsepower
Form of driven
Shaft sizes and separation
Room limitations for key diameter and length
Style of match (Interference match default, clearance match and shaft locking device planning readily available upon request)
Unique necessities (vertical mounting, drop out center, flange mount, electrically insulated, API-610 up to 3,800 RPM, shear pins, balancing, and so on.)
Angular misalignment, axial misalignment, and rated torque are all associated on the coupling’s capacity to accommodate application torque more than any time period of time. As illustrated from the following charts, once the application torque increases to 50% on the coupling capability, the skill from the coupling to accommodate angular misalignment 
to is lowered. The same holds accurate for the ability to accommodate axial misalignment.
Choice Method
1. Select the coupling kind.
2. Select the driven machine services element SFA
3. Select the driving machine services issue SFD
Care should be taken when the driving machine is apart from a standard electrical motor or turbine. Some engines will impose more fluctuations over the drive procedure and allowance should be created accordingly. A torsional coupling may possibly be expected for diesel drives.