Feature 2 | GERMANY Vulkan lightens the load
German-based Vulkan couplings has launched its latest in coupling technology with the Rato R+ featuring high dynamic load capacity and enhanced rotational dynamic properties
(ACOTEC) couplings. In the low to middle torque ranges where the handling and installation of a complete element is practical the RATO Ring coupling is an additional alternative. A customised tuning of the system’s torsional vibration characteristics is possible due to the variety of torsional stiffness and element configurations available. Te radial, axial and angular flexibility of the RATO R+ coupling, with the shortest possible installation length, enables good compensation of shaſt misalignments caused by the flexible mounting of the prime mover, foundation movements etc. to be achieved. Te development of the new RATO R+ was
T
primarily focused on the on the centrepiece of the coupling: the elastomer. Innovative research on compounds and highly specialised vulcanisation technology facilitated the development of an elastomer with considerably higher power density. The ACOTEC compound characterises itself in comparison to other conventionally used materials not only with the enhanced tensile strength and tear strength and increased ultimate elongation, but
he Rato R+ has been developed as part of an extended range of its advanced compound technology
With this enhancement in power and performance of
the Rato R +, which
is facilitated by the use of the new elastomer, VULKAN Couplings is falling in line with the latest trend worldwide for increasingly more powerful engines operating at higher speeds: The Rato R + replaces the next higher size of the conventional Rato R respectively. As a result of the lower mass and correspondingly lower centrifugal forces higher speed performance is achieved for
the coupling. Vulkan offers a flexible coupling solution
also with a high thermal resistance and lesser ageing effects. Vulkan Couplings guarantees a high level of process stability for the new elastomer from the aspects of manufacturing and further processing, since this involves in-house production processes, the quality of which is subject to constant and continuous control. An application has already been lodged for the industrial property rights for the new ACOTEC elastomer.
In addition, the
RATO R + has yet another significant commercial benefit since a small size coupling may be used for the same power requirements. Another product advantage of the
RATO R+ compared with other highly flexible couplings which are used in engines operating at high speeds is the great level of ease with which it can be integrated into different drive solutions, says Vulkan. The main components of this coupling serve as the basis for different special designs such as, for example, Cardan shaft couplings or composite shaft systems. NA
See you at
Stand No B5.104
98 The Naval Architect September 2012
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