What do rigid couplings do?
Rigid couplings serve as compact, economical components for the timing, joining or aligning of shafts at lower speeds and torque, particularly where zero backlash is desired. They are not intended for use as a critical part of a drive line or as a substitute for flexible or universal joints or other power transmission devices. As they are applicable for aligned shafts only, they are the most basic but often most cost-effective coupling option.
