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Elecon Fluid Coupling

Fluid Coupling is Ideally suitable for smooth and jerk less start and also act as energy saver. When the fluid coupling is filled with oil to the appropriate level and the motor is switched on, oil in the passages between the vanes of the impeller is accelerated radially outwards gaining energy all the time until it reaches the maximum circuit diameter. The oil then passes from the impeller to the runner in which it is forced to move inwards between the vanes and as its radial velocity falls energy is transferred to the runner and output shaft. Because the oil passes directly from the impeller to the runner, (there is no reaction member, as in a torque converter), the efficiency is high, with full load slips of between 2 and 5 % being achieved in practice and depending on the application and size selection.
Wind age and oil circulation losses are negligible therefore efficiency equals 100% slip %. Should an overload occur the fluid coupling will stall, i.e. slip 100 % at a torque value determined by the initial oil filling level. Thus motor and machine are both protected.


  • Type CD-Without delayed filling chamber
  • CDR-With delayed filling chamber
  • CDRP-With extended delayed filling chamber
  • CDRS-With extended delayed filling chamber & controlled nozzle
  • CDIR-Reversed coupling with delayed filling chamber
  • CD/CDR R + ED-Fluid coupling with gear coupling (Radially removable)
  • Size-185 to 760
  • Rating-1.5 to 950 kW at 1450 RPM