Hydrodynamic couplings are fluid coupling devices used in power transfer of mechanical devices involved in heavy industrial machinery, mining & automotive equipment. Various types of mechanical device are conveyor systems, centrifuges, mixers, crushers, shredders, bucket wheel excavators, shaft generators, and drum drives etc. The device has experienced intense consumption by replacing the mechanical clutch systems which were subjected to abrasions. Other pivotal reason for the rapid emergence of hydrodynamic couplings market is that they can operate at variable speeds, have controlled start-up without experiencing shocks & vibrations during power transmission load intervals. The product also employs low input & maintenance costs. Revenue generated from sales of hydrodynamic coupling market is expected to increase at a moderate pace over the forecast period.