New Engine Coupling Offers Easy Stiffness Adjustments, Company Says
The TSCAN TNR coupling, intended primarily for mobile and stationary diesel-driven powertrains, consists of an aluminum housing and steel hub separated by one or two rows of mechanically-linked, cylindrical elastomer inserts.
Image courtesy of Ringfeder Power Transmission.
WESTWOOD, N.J. — A patent-pending engine coupling developed by Ringfeder Power Transmission is said to optimize torsional stiffness and misalignment tolerance across a wide torque range. Intended primarily for mobile and stationary diesel-driven powertrains, the new TSCHAN TNR coupling weighs about 20% less for a given coupling size than a traditional rubber motor shaft coupling. It offers a 15-to-20 percent lower cost of ownership owing to the ease of replacing the elastomer inserts, the company reported.
The TSCHAN TNR Couplings consist of an aluminum housing and steel hub, separated by one or two rows of mechanically-linked, cylindrical elastomer inserts. These inserts undergo a controlled deformation under shear loads as the coupling transmits torque.
Fine-tuning the torsional stiffness and misalignment tolerance of a given TNR model requires only minor changes to the composition of the elastomer, the company reported—with 'stiffer' inserts favoring torque transmission efficiency and 'softer' inserts favoring misalignment tolerance. The TNR's ability to deliver precisely tuned dynamic stiffness can help solve resonance and vibration problems, according to Ringfeder.
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