Back Diferencial Ferguson Catalan Visco-Kupplung German Diferencial de acoplamiento viscoso Spanish Visco-coupleur French Hidrodinamička spojka Croatian Giunto viscoso Italian ビスカスカップリング Japanese Viskokobling NB Sprzęgło wiskotyczne Polish Вязкостная муфта Russian
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A viscous coupling is a mechanical device which transfers torque and rotation by the medium of a viscous fluid.