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Fluid coupling type TDM-SAE

The constant-filled fluid coupling type TDM-SAE is used in drives for diesel engines for mobile shredding machines. The coupling is suitable for accelerating moderate masses. Thanks to the hydrodynamic principle, the fluid coupling dampens torsional vibration and protects the drive components against overload. This increases the productivity of your 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

  • Reduced Load engine run-up
  • Smooth start-up of driven machine
  • Protects the drive components 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

Typical fields of use

  • Crushers
  • Chippers
  • Shredders



Type SAE A B D1 L D2
422 TDM-SAE 11,5/2 367 240 539 110 70
422 TDM-SAE 11,5/3 367 240 539 110 70
487 TDM-SAE 14/1 397 282 618 120 80
562 TDM-SAE 14/1 452 314 706 150 95
650 TDM-SAE 14/0 570 430 830 160 110
650 TDM-SAE 18/0 570 430 830 160 110

Dimensions in mm

The fluid coupling TDM-SAE is flanged directly to the motor.

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 additional chambers , where their automatically controlled fill and emptying have a decisive influence upon start-up behavior. The demand of the drive technology determines the coupling type and capacity. Constant-filled couplings are mainly used for soft start , torque limitation control and influencing 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