Knowing the following is required when selecting a motion control coupling:
HP and RPM of the driver
Shaft size of the driver and driven
Application requirements
Environmental conditions ( i. e. extreme heat, corrosive conditions, space limitations )
Space Limitations ( i. e. maximum outside diameter and overall length for the coupling)
Motion Control Couplings
The selection process for determining the proper Motion Control coupling starts with selecting the coupling design that best addresses the application requirements. The EP Motion Control Coupling Quick Reference Chart of the Motion Control catalog, provides a method of weighing performance characteristics of the Beam, Bellows, Mini-Disc, Oldham, Mini-Soft, Curved Jaw, and Mini-Jaw couplings. Each coupling is compared side by side in critical categories such as: material, torque, torsional stiffness, bore capacity, optimum RPM, misalignment capacity, optimum temperature and second of inertia.
Once a style is selected, the correct size should be determined predicated on the features of the particular style. The Beam, Bellows and Mini Disk designs all have an individual piece construction, therefore only one part must be chosen. The GS curved jaw, Oldham, Mini Soft, and Mini Jaw styles have got a three piece constructions, comprising two hubs and an put in. When the shaft size of the driver and powered are the same size, the hubs would be the same. When the shaft diameters differ, the hubs chosen will differ accordingly.