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Highly Flexible R Coupling

Highly flexible R couplings are especially well suited for drives with limited installa­tion space. Compared to other types of couplings, R couplings transmit up to 50% more torque for the same diameter.

R couplings dampen torsional vibrations and torque shocks in the driveline. The operational stability and service life of your system or your vehicle are increased, which in turn increases availability and reduces life cycle costs.

Bell-house bearing models are optional.


Voith GmbH & Co. KGaA
Centrumstraße 2
45307 Essen, Germany

Phone +49 201 55783-61
Fax +49 201 55783-65


Technical data

Torque up to 15 kNm
Speed up to 3,000 rpm
Mounting options
  • Cardan shaft mounting
  • Bell-house mounting

Elastomer type

  • Natural rubber (NR): 45 ShA, 50 ShA, 60 ShA, 70 ShA
Ambient temperatures
  • -40 – +90°C
  • Bell-house bearing design (in cases where the engine crank shaft is not able to bear the weight of the cardan shaft and the coupling)

Advantages and benefits

  • The R coupling features an especially high torque capacity. Compared to other coupling systems, they transmit up to 50% more torque for the same diameter. You save considerably on installation space while at the same time transferring high torques safely and reliably.
  • Resonance speeds are shifted into non-critical speed ranges. This means the system runs quieter, increasing comfort when operating the vehicle or equipment.
  • Elastomer elements dampen torsional vibration peaks that occur in the driveline. Thanks to their elasticity, these elements reduce the stresses on the driveline caused by internal combustion engines or load-side units with their natural fluc­tuations in torque. As a result, your system or vehicle operates with a high degree of operational durability. And that increases your productivity.
  • The coupling takes the load off all of the drive components, increasing their service life and reducing maintenance costs. The net result is a positive impact on life cycle costs (LCC) – not to mention preventing consequential expenses arising from downtime.
  • The coup­ling design features an axial plug-in connection. This makes the coupling especially well-suited for bell-house mounting, where the driven machine is directly connected to the engine housing. The coupling aligns itself automatically when the drive unit and driven unit are assembled. This reduces the effort and costs associated with installation, fitting, and startup.

Typical applications

  • Ships and boats:
    main drives, gensets
  • Rail vehicles:
    locomotives, railcars, and special-purpose vehicles
  • Construction equipment:
    all types, e.g., wheel loaders, dump trucks, graders, etc.


Series BR 1xx

Series BR 1xx

Series BR 3xx

Series BR 3xx

Technical information

In systems where a diesel engine acts as prime mover, the highly flexible coupling has mainly two functions: moving natural frequencies and damping critical torsional vibration amplitudes. Voith highly flexible couplings are well-suited to these tasks.


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