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VULKAN Composite shafts are especially suited for drive systems requiring low mass and/or where there is a great distance between shaft bearings. VULKAN composite shafts are used successfully world wide for marine propulsion and power generation, where reducing weight and eliminating intermediate shaft bearings were of high priority. They are currently in service on board fast ferries, patrol boats, work boats, yachts and stationary machinery. VULKAN Composite shafts are made from a carbon fiber reinforced synthetic material using the latest manufacturing techniques. The carbon fibers are wound in individual layers which are arranged in a criss-cross fashion with a specific winding angle relative to each other. This allows for a shaft that can transmit torque in either direction and through careful design the winding angle can be varied according to the desired shaft characteristics i.e. torsional and bending stiffnesses. The VULKAN Composite shaft utilizes bonded metal flange connections at both ends for connecting to the flanges in the drive train.
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The operational efficiency of a machine or plant is determined by, above all, the bearing quality at all rotating components. This applies in particular to the line-shafting of ship propulsion plants. The Simplex bearings were developed especially for this purpose as short, plain bearings. More than 21,000 have left our works to date.
Simplex bearings are characterized by a short shell length. Moreover, they can be precisely aligned to avoid edge loading. The running properties of the bearing metal have been optimized with a technically highly advanced bonding of bearing metal and shell. The vital lubrication of the bearing is safeguarded in the Simplex bearing at all times, even at low shaft speeds. Temperature sensing and monitoring systems are also supplied. Cooling systems are available for unfavourable operating conditions.
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The Simplan seal is a mechanical seal for water-lubricated sterntubes for river vessels and seagoing vessels.
Simplan seals meet the highest standards set by the "Central Commission for Rhine Shipping" (European Waterways).
They are certified by Germanischer Lloyd, the American Bureau of Shipping, by Lloyds Register and by ClassNK (Nippon Kaiji Kyokai).
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Pressure applied, spring released disc brakes
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Description
The Wichita Metana Caliper brake is
available in either Spring applied /
Hydraulic release or Hydraulically
applied / Spring release options. It is
available in a single frame size although
special mounting to suit customers
requirements may be possible. The
brake is designed for medium to heavy
duty applications where high energy
stopping and holding duties are
required.
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The VULASTIK-L coupling is a torsionally flexible rubber coupling, that compensates axial, angular and, to a certain degree, radial displacement of the connected machines. Four rubber qualities and silicone are available in order to tune the coupling to the various system requirements. VULASTIK-L couplings are available with one elastic element in standard design or with two elements acting in parallel in Dual design. The main parts of the VULASTIK-L coupling are hub and flanged casing, between these, the disc-shaped element is arranged. This disc element is connected by vulcanization at its inner radius, the outer radius is connected to the flanged casing by a "plug-in" toothing. This toothing provides the axial "plug-in" feature and compensation of shaft displacements. The permissible angular coupling displacement is 0.5°. The VULASTIK-L elements are made from heat-resistant rubber, the admissible ambient temperatures range from -45°C to +90°C. Alternative elements in silicone are available (ambient temperatures range from -45°C to +120°C). With respect to a long lifetime, however, consideration should be given to sufficiently large ventilation cross sections. This is very important when considering bellhousing.
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Complementary to the "all-round" RATO-S coupling the highly flexible RATO-R coupling has been specially designed for use in installations requiring a high level of torsional flexibility and misalignment capacity. Inherent features of the design include the high dynamic load capacity and good rotational dynamic properties due to the low rotating inertias. The area of application is primarily in high-speed main/PTO systems driven by a Diesel engine or electric motor. In the low to middle torque range where the handling and installation of a complete element is practibable the RATO-R coupling is an additional alternative. A good tuning of the systems´s torsional vibration characteristics is possible due to the variety of torsional stiffnesses and element configurations available. The radial, axial and angular flexibility of the RATO-R coupling, with the shortest possible installation length, enables good compensation of shaft misalignments due to the flexible mounting of the prime mover, foundation movements etc. to be achieved. The use of relatively soft annular membranes permits, in the event of an axial vibration excitation, an efficient isolation of the system-effectively protecting shaft bearings. By avoiding noise paths, direct metal to metal contact, the RATO-R has excellent noise-attenuation properties.
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The highly-flexible RATO-S coupling is a torsionally flexible rubber coupling that compensates radial, axial and angular shaft displacements of the connected machinery. The torque is transmitted by elements loaded in shear. The different torsional stiffnesses and damping factors available provide the possibility to satisfactorily tune the torsional vibration behaviour of the drive system. The essential parts of the coupling are: the torsionally flexible part, the membrane part and the connecting parts. The torsionally flexible part consists of elements, which can be arranged in one row or more rows respectively, dependent on the coupling size and the stiffness level. The flexible elements are divided into several segments. Due to the element segments and in the case of multi-row couplings, a displaced arrangement of the segments gives a good ventilation and cooling of the elements. With certain sizes the segments have additional ventilation holes. The segmental construction also assures easy handling at installation.
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The highly flexible RATO-DS coupling has been specially designed for use in installations requiring a high level of torsional flexibility and medium level of misalignment capacity. Supplementing the "all-round" RATO-S the RATO-DS has been developed to offer an application - orientated coupling design. Specially for rigidly mounted ship´s main propulsion. The 3 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. When required a torque limiting device can be fitted. The normal misalignments caused by foundation deflections, heat etc. can be adequately compensated for by the radial, axial and angular flexibility of the RATO-DS. Dynamic safety was the prime consideration in the design of the RATO-DS coupling. This is reflected in the element in the element shape - mechanical and thermal capacity and by using a friction loaded bolting arrangement. The large ventilation holes located in the couplings metal parts ensure that any heat generated in the coupling is effectively removed. The advantages of the compact dimensions together with the possibility of radial removal of the element leads to a weight efficient coupling assembly in the drive system.
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The PROPFLEX S coupling has been designed and developed to be installed on board of pleasure crafts, where comfort of the passengers requires a high vibrations isolation degree. It has to be positioned between the gearbox and propeller shaft in order to reduce the vibrations and noise transmission coming from the shaft line itself. It can compensate axial, radial and lateral misalignments and thanks to its modular design can be supplied in different lengths and complete of spools and hubs to match with the most known gearboxes and propulsion systems. It is particulary suitable for all applications where a thrustblock is not foreseen on the shaft line. The PROPFLEX S coupling can transmit directly the propeller thrust to the thrustblock into the gearbox. As there is no direct contact between metal parts, the PROPFLEX S coupling is a noise isolating coupling. Thanks to its own design, the Propflex S coupling can be dismounted radially, without moving the connected machineries. Also available in steel and aluminium execution.
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The PROPFLEX N coupling has been designed and developed to be installed on board of pleasure crafts, where comfort of the passengers requires a high vibrations isolation degree. It has to be positioned between the gearbox and propeller shaft in order to reduce the vibrations and noise transmission coming from the shaft line itself. It can compensate axial, radial and lateral misalignments and thanks to its modular design can be supplied in different lengths and complete of spools and hubs to match with the most known gearboxes and propulsion systems. It is particulary suitable for all application where the propeller thrust is already absorbed by the propulsion system. As there is no direct contact between metal parts, the PROPFLEX N coupling is a noise isolating coupling. Thanks to its own design, the PROPFLEX N coupling can be dismounted radially, without moving the connected machineries. Also available in steel and aluminium execution.
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