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KTR COUPLINGS FOR MARINE APPLICATIONS
KTR’s couplings are found on the high seas all over the world; in main and auxiliary drives and every kind of deck equipment, such as ballast pumps, cranes and winches. The range of marine couplings are fully certified to Germanischer Lloyd and the American Bureau of Shipping amongst others, allowing them to be used in shipbuilding throughout the world. Full thrust with water jet drives Speedboats, life-boats, ferries and customs boats are among the increasing number of vessels using water jet drives. There is no better coupling to transmit torque in these drives than the double-cardanic, torsionally stiff RADEX®-N Composite coupling which compensates for high displacements with low restoring forces. The driving shaft and impellor are connected by a CFK spacer which accepts considerably larger shaft dimensions than usual steel tubes, whilst being lower in weight, accepting higher loads and being maintenance-free. Full manoeuvrability for steering drives The majority of freight and passenger vessels as well as a growing number of yachts are equipped with bow thrusters or transverse rudders for better manoeuvrability in harbours. These applications require couplings that dampen torsional vibrations such as the flexible ROTEX® coupling which is mounted between the motor and gearbox. Its compact design makes it easy to assemble, disassemble and operate and is completely maintenance-free. The coupling compensates for axial, radial and angular displacements, increasing the service life of the entire drive system. It is becoming increasingly common for tug boats and other vessels to be fitted with Azimuth drive systems. The Azimuth drive is mounted on bearings enabling the entire propeller unit to swivel, providing extraordinary manoeuvrability. The combination of the ROTEX® coupling with the KTR-SI overload system on these applications protects the gearbox of the propeller unit against high torque shocks. This increases the service life of the drive system, especially if the steering unit collides with the seabed when the vessel is manoeuvring in shallow waters. CLAMPEX® clamping sets were developed by KTR especially for high loads, high alternating torques and high torsional forces, helping to keep any ship on course. The shaft-hub connection was designed for shaft diameters of up to 400mm is able to transmit much higher torques and axial forces than a positive-locking connection; at sea up to 500,000 Nm and on industrial and land applications even more. Power and safety on board Loading containers, weighing the anchor, hoisting the draw nets, launching the lifeboats; wherever anything is to be moved at sea, KTR couplings are involved. On winches and cranes and numerous electric power packs, ROTEX® couplings are used for their powerful torque transmission and safety features. Hydraulic power packs in combination with diesel engines use BoWex-ELASTIC® and BoWex® FLE-PA flange couplings which can both be plugged in axially, making them easy to disassemble. Fail-safe couplings for pumps, compressors and generators KTR offers a large range of couplings for pumps used on marine vessels, such as the torsionally flexible jaw couplings ROTEX® and POLY-NORM® or the torsionally stiff steel lamina couplings RADEX®-N and RIGIFLEX®-N. The couplings on marine compressors should be compact and have a high resistance to various substances and temperatures. Here, the flexible ROTEX® or the highly flexible flange coupling BoWex-ELASTIC® are good options. Sometimes a separate power source may be required on board a ship but this is not an issue with a powerful marine generator and a fail-safe coupling. ROTEX® and BoWEX-ELASTIC® are again the first choice as they are compact, flexible and have the ability to transmit high torques and dampen vibrations. This year KTR Couplings Ltd will be exhibiting at Seaworks, the commercial marine and workboat exhibition. Visit them at the ABP Port of

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