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New Coupling Design From Centa

Posted on October 22, 2009

Centa announces the new CENTAMAX-HTC High Thermal Capacity torsional coupling design, suited for engine driven systems that need a torsionally soft, linear characteristic coupling with high power loss capacity. The principle of the CENTAMAX coupling was developed and introduced over 25 years ago by Centa. The basic design idea consists of a rubber disc, vulcanized to a center hub on its inner driven part and plugged in by teeth axially to the driving flange.

Today’s diesel engines, however, tend toward higher power density and improved gas exhaustion values. In this, the engines become torsionally more active placing higher requirements on the coupling. The demand for higher permissible power loss of the coupling is constantly rising in order to better dissipate the internal heat caused by damping within the coupling.

The mixture of natural rubber typically used for these types of couplings has already been optimized for higher temperature stability. Silicone has also been used as an alternative but is expensive and can result in a slightly progressive torsional characteristic curve with lower strengths and low resistance to tearing. The CENTAMAX-HTC design improvements target increasing the permissible power loss of couplings made of natural rubber, particularly for large couplings for diesel-driven generators.

The rubber discs of the new CENTAMAX-HTC (high thermal capacity) coupling are divided into two slim halves. This improved design reduces internal temperature of the coupling, increases lifetime and in many cases permits the use of a smaller coupling or avoids the necessity for an expensive, complex and space demanding double element coupling.

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