scope:

This Practice should be used to select flexible nonlubricated couplings for general purpose applications in most types of rotating equipment. General purpose coupling applications include loads with steady, nonfluctuating torque characteristics within the power and speed ranges defined in this Practice.

Coupling applications are considered special purpose for rotational speeds greater than 3,600 RPM, having driver-rated power greater than 2,000 horsepower and/or a nonsteady (fluctuating) torque characteristics.

The selection of couplings for applications outside the scope of this Practice should receive further engineering review.

Purpose

This Practice provides selection guidelines for designers selecting general purpose nonlubricated flexible couplings.