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Fluid coupling type TV

The fluid coupling type TV is equivalent to the fluid coupling type T, enhanced with a delay chamber. When starting up, this reduces the torque during the machine start up. The driven machine starts gently. The coupling also protects the drive against overload and dampens torsional vibrations. This protects your system and increases its productivity.

The fluid coupling type TV is predominantly used in drives for conveying goods and for crushing / shredding machines.

This fluid coupling is also available with two coaxially arranged work circuits (type DTV). The parallel acting circuits double the power transmission.

We offer fluid couplings with water as the operating medium (type TWV) especially for potentially explosive atmospheres or with outer casing made of spheroidal cast iron (type TUV) for use in operations with relevant material requirements.

Temperature monitoring systems (MTS, BTS, BTM) increase the availability of the drive and boost the productivity of the system.


Voith GmbH & Co. KGaA
Hydrodynamic Couplings
Voithstr. 1
74564 Crailsheim, Germany

Sales, Technical Consulting, Quotations
Tel. +49 7951 32-409
Fax +49 7951 32-213

Service, Spare parts, Repair
Tel. +49 7951 32-1020
Fax +49 7951 32-554

24/7 Technical Emergency Helpline
+49 7951 32-1616

Benefits and uses

  • Load-free motor run-up
  • Smooth start-up of driven machine
  • Protects the drive in case of an overload
  • Dampens torsional vibration in the drive
  • Protects system components - the service life of your system increases
  • Robust and unsusceptible to environmental influences
  • Wear-free power transmission - reduces maintenance and repairs
  • Automatic load sharing in multi-motor drives protects your motor against overload
  • Sequential startup of the motors reduces the load on the supply circuit

Typical fields of use

  • Belt conveyors
  • Plate conveyors
  • Stacker and Reclaimer
  • Crushers
  • Mills



Type A D L d1 max. d2 max. l2 max.
274 TV 172 328 239 70 55 125
274 DTV 244 328 300 42 55 125
366 TV 225 424 303 90 65 120
422 TV 257 470 359 100 80 135
487 TV 297 556 403 120 90 155
562 TV 333 634 449 130 110 170
650 TV 384 740 536 140 120 200
750 TV 440 846 603 150 135 240
866 TV 493 978 682 160 150 265
866 DTV 905 978 on request on request on request on request
1000 TV 547 1118 757 180 160 280
1150 TV 670 1295 880 180 180 320
1150 DTV 1208 1295 1418 180 180 350

Dimensions in mm

Connecting technologies for fluid couplings:

  • Elastic connecting couplings
  • Assembly with flange on the motor shaft (type T…N) with elastic connecting coupling on the drive side
  • Cardanic suspension
  • Belt pulley (type T..RI)

Technical information

Operating principle

         <br />
        Operating principle of the hydrodynamic power transmission
Operating principle of the hydrodynamic power transmission

Hydrodynamic couplings transmit mech­anical power from the motor to the driven machine via a flow of fluid. This occurs by means of two bladed wheels positioned face to face. The primary wheel (red) is connected with the motor and acts like a rotary pump, the sec­ond­ary wheel (blue) is connected to the driven machine and acts like a turbine. Power transmission is pro­por­tional to the fill level in the working circuit. As a result of the mechanical separation of the drive and driven sides, the hydro­dynamic couplings transfer the power wear-free and dampen the torsional vibration and torque shocks in the drive chain at the same time.

Constant-filled couplings

Constant-filled couplings are self-contained drive components. The different types of constant-filled couplings are mainly differentiated by the volumetric chambers , where their automatically controlled fill and emptying have a decisive influence upon start-up behavior. The demand of the drive application determines the coupling type and capacity. Constant-filled couplings are mainly used for soft start, torque limitation and dampening the torsional vibration behavior of the drive.


Voith doesn't just supply couplings, we are also your engineering partner for customer-specific drive solutions:

  • Designing of complete drives
  • Dimensioning the coupling for the optimal use of your system
  • Analysis and optimization of the operating state of drives in existing systems (retrofit)
  • We can advise you about the selection of optimal start-up technologies
  • Competence in systems for all mining equipment and the bulk material industry

Filling of a Turbo Coupling