FLUID POWER: Zero-Max Inc.’s Composite Disc Couplings for the wind turbine industry are designed with composite disk packs at both ends of a center spacer. These patented designed disk packs provide the true strength and calculable flexibility of the coupling. The composite disk packs (flex elements) provide an advantage over other coupling component designs by allowing a surplus of parallel and axial misalignment while remaining torsionally stiff through all harmonic ranges of the wind turbine’s oscillating load. Depending on the application, Zero-Max’s center spacers can be machined out of steel, composite glass fiber or 6061-T6 aluminum. Through the use of Finite Element Analysis (FEA), these center spacers can be engineered to withstand in excess of 70,000 Nm of torque depending on the material selected. The coupling’s composite material withstands all types of environmental elements including temperature extremes from -57 to 121C and from moisture and chemicals native to wind turbines.