How Does an Anal Vibrator Work and Who is it For? JOUJOU Coupling is a mechanical component used to connect two shafts together so power and motion can be transmitted from one shaft to another. It can also help absorb misalignment, vibration, and shock plusOne vibrating bullet High excited state splitting and multimode vibrational coupling in Mn4+ activated fluoride phosphor Science China Physics, Mechanics & Astronomy Springer Nature Link Dampen torsional vibrations & tune mechanical power transmission systems to have critical speeds outside the operating range.