FLUID POWER: New CD Couplings® from Zero-Max can be used in heavy-duty dynamometers for transmission output testing, and provide the ideal combination of high dynamic load capacity and high torsional stiffness to ensure reliable system operation. CD Couplings® can be designed to fit in a much smaller envelope, enabling the dynamometer to be built with a much smaller footprint. CD Couplings® are designed so the working part is made of a composite material and are available in single and double flex models with or without keyways. The single flex models have a torque capacity range from 40 to 1,436 Nm and beyond with speed ratings from 4,400 to 17,000 rpm. Zero-Max will design and build custom CD Couplings® to handle virtually any application.