Centa has unveiled its CENTAMAX-HTC for diesel engines. The new coupling is a development of its CENTAMAX flexible coupling designed to dissipate heat far more rapidly than the previous version.

Aimed at a variety of applications including marine propulsion, generators and locomotives, a new flexible coupling has been launched by Centa Transmissions Ltd. that the company claims dissipates heat quicker than its previous version. The new product is its CENTAMAX-HTC for diesel engines — a development of its CENTAMAX flexible coupling.

According to the company, the design of the high thermal capacity coupling enables end users to specify a rubber flexible coupling on modern diesel engines that are highly torsionally active, without the damaging heat concentration previously found in the center of the coupling element. Centa said that high power/high output diesel engines often cause more vibration, and consequently heat buildup is vastly increased. Therefore, there is a need to increase the capacity of heat dissipation, the company reported.

The CENTAMAX-HTC is effectively two flexible couplings in a single element. This means that each part of the dual rubber element is narrower and, therefore, with increased airflow through the coupling, cooling capacity increases and heat dissipates more quickly than would be the case in a conventional single element, according to Centa.

The coupling is designed for generators, marine propulsion, locomotives, splitter gearboxes, screw compressors and rotary pumps and was originally developed by Centa 25 years ago. Centa claimed that these couplings are suitable for axial plug-in and therefore ideal for connection to flywheels in diesel engine flange housings.

The company added that modern diesel engines now benefit from higher power density and improved gas exhaustion values and therefore are more torsionally active. It added that this places greater demand on the flexible couplings and, consequently, an increase in operating temperatures that now can be overcome.

According to the company, the new coupling considerably reduces the internal operating temperature of the coupling, increases coupling life and, in many cases, Centa claimed it could demonstrate that it is possible to specify a smaller, less stiff coupling with a higher heat capacity, which it said eliminates the need for an expensive, complex and space-consuming coupling. The CENTAMAX-HTC is developed initially as an 18 000 Nm coupling.

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