Soft and safe
Hydrodynamic fluid coupling
Nominal output from 1.2 kW up to 2,500 kW with 15 sizes
Temperature range: from –40 °C to +50 °C
​Especially within tough applications, drive components and processing machines are subject to extreme loads. FLUDEX® couplings limit start and maximum torque within the drive train and serve as starting aids for the motor and as overload protection in the case of an incident. They also provide damping and separation of rotary oscillation, thereby reducing restoring forces to a minimum.

Fluid couplings operate according to the Föttinger principle. The coupling parts on the input and output side are not mechanically connected and are therefore wear-free. The torque is transmitted by the fluid movement in the coupling, accelerated by the radial blades. Our film illustrates the Föttinger principle as well as the operating principle of the FLUDEX coupling.

Your benefits at a glance

Soft and shock-free starting of machines and conveyor systems
Torque transmission without wear allows internal combustion engines to start up with a connected load
Torque limitation during start-up and in the case of overload protects coupled system components
Acceleration of large masses without using oversized motors
Protection of the drive against load peaks due to frequent switching procedures and reverse operation
Excellent decoupling of vibrations and shock damping
Largely torsional vibration decoupling in vibration-endangered drives
Small operating slip of the coupling at nominal load (approx. 2%)
Suitable for use in potentially explosive environments; certified according to 2014/34/EU (ATEX)

Made in Germany, worldwide in use

Mining and Cement: conveyor belts, apron conveyors, bucket elevators, tube mills, rotary kilns, bunker dischargers, vertical mills, bucket excavators, crushers, roller presses, separators
Oil and Gas: pumps, fans, compressors, air condensers
Power Generation: air condensers, generators, cooling towers
Chemicals and Pharmaceuticals: driers, lauter tuns, pumps and compressors, mixers, cooling towers, agitators, reactors
Pulp and Paper: woodgrinders, waste paper, wet section, dry section, wastewater purification plants
Water and Wastewater: aerators, water screw pumps
Food and Beverage: lauter tuns, reactors, agitators, mixers
Sugar: generators, extraction plants, sugar cane mills, beet washers
Passenger Transport: cable cars
Other fields of application: crushers for wood, metals, stones

Did you know?

The specified operating conditions of a FLUDEX coupling can be monitored by a non-contact and maintenance-free Electronic Operating Control (EOC) system. A thermal operation control device and fusible safety plugs in the coupling housing provide additional protection against overheating and overload pressure.