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Fluid coupling type TVVS

The fluid coupling type TVVS is equivalent to the fluid coupling type TVV, enhanced with an annular chamber. When standing still, the fluid levels in the delay chamber, working circuit and the annular chamber are the same. The driven machine starts up extremely gently and the increase in torque is dependent upon the load. The coupling also protects the drive against overload and dampens torsional vibrations. This protects your system and increases its productivity.

The fluid coupling type TVVS is predominantly used in belt conveyor drives.

We offer fluid couplings with water as the operating medium (type TWVVS) especially for potentially explosive atmospheres or with outer casing made of spheroidal cast iron (type TUVVS) 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
  • Gentle start up of the belt conveyor – up to 45s
  • 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
  • Automatic adjustment to the load condition of the belt through extended torque build-up

Typical fields of use

  • Belt conveyors

Technical Data


Type A D L d1 max. d2 max. l2 max.
422 TVVS 335 470 437 100 80 135
487 TVVS 382 556 488 120 90 155
562 TVVS 428 660 544 130 110 170
650 TVVS 494 761 646 140 120 200
750 TVVS 567 877 730 150 135 240
866 TVVS 641 1017 830 160 150 265
1000 TVVS 686 1165 896 180 160 280
1150 TVVS 883 1340 1093 180 180 320

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