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Retarder 120 E – a wide range of use in buses

    The Voith Retarder 120 E is an inline oil retarder with its own transmission-independent oil supply. It is an ideal choice for long-distance and tour buses.

    Features and benefits

    • Higher average speed
    • Fewer visits to workshops
    • Reduction of vehicle operating costs
    • Less service brake overhauls and tires
    • Fast amortization
    • Hydrodynamic Retarders are more fuel-saving than electro-magnetic Retarders
    • Advantages for a vehicle resale

    Technical data

    Voith Retarder 120 E*  
    Max. braking torque at the retarder shaft 2 200 Nm
    Maximum speed at the propshaft 3 000 pro min
    Standard operation

    hand-brake switch with function v-constant (downhill cruise control) option: foot control

    Operating medium oil (see fuel specifiation)
    Fill rate (oil change) 4,2 l
    Control medium compressed air
    Unit weight incl. flange, heat exchanger, without operating medium approx. 59 kg
    Nominal voltage 24 V
    CAN-bus-specific electronic control system VERA


    *Voith Local China Retarder 120 E for Buses and Trucks



        Service – where your bus is in good hands

          Whether it’s maintenance or repairs, troubleshooting, or the functional testing of individual components: our professionals will make sure you stay on the road. At the Voith retarder workshop in Crailsheim, and throughout the world.

          Judge us by our performance

          • Onboard troubleshooting and upgrade 
          • Replacement and repair 
          • Repair of supplied retarders (all model series) 
          • Troubleshooting and functional testing of individual components 
          • Worldwide delivery of Voith original spare parts, as well as 
          • replacements and basic retarders

          Retarder oil list

          Do you have any questions about Voith Retarder 120 E? We’re here to help!

            Service contact

            Voith GmbH & Co. KGaA

            Mobility Service

            Hardtstraße 8 74564 Crailsheim, Germany


            Technical Support

            Technical Support


            t +49 7951 32-1555

            f +49 7951 32-1506

            Spare parts orders

            Spare parts orders


            t +49 7951 32-1644

            f +49 7951 32-756