Diesel Electric-Drive in Ice Breakers - RATO DS

Torque range
from 6.3 kNm up to 160.0 kNm

Areas of application
VULKAN torsionally flexible marine engine couplings for rigidly mounted engines

The high torque flexible Vulkan RATO DS and RATO DS+ couplings have been specially designed for use in installations requiring a high level of torsional flexibility and medium level of misalignment capacity. Supplementing the all-round marine engine couplings RATO S and RATO S+. The RATO DS / RATO DS+ couplings has been developed to offer an application-orientated coupling design. Specially for rigidly mounted ship´s main propulsion. The available stiffnesses enable a good tuning of the system with respect to both the transient and steady-state torsional vibration response. In the tradition of VULKAN Couplings, a backlash-free torque transmission is achieved.

Product benefits

  • VULKAN Rato DS and RATO DS+ marine couplings for high-performance elastomer of the ACOTEC sizes allows the use of a smaller size and thus offers a commercial benefit.
  • It is possible to provide a safety device against racing to protect the drive system
  • Maximum flexibility for the solution and a range of special design 
  • The element design delivers torque transmission without any play. Optimal heat dissipation ensures functionality and availability of the drive system even under the harshest conditions
  • The compact dimensions of the torsionally flexible coupling ensure considerable weight reduction and therefore greater efficiency in the drive as well as lower project costs


Technical Data
Explanation of Technical Data