Rigid mechanical coupling CTDT

for boatfor shafts

Marine Hardware™, Inc. manufactures a full range of shaft couplers, plus many special models depending on installation requirements, including V-drives. All are cast from pure bronze ingot or billet 6061-T6 aluminum and Computer Numerical Controlled (CNC) turned to insure absolute concentricity of the bore with the registration ring, part after part. All bolt patterns are jig-drilled and registered from the finished bore. We make all models and styles of couplers (except solid style) from 70 manganese bronze; also available in mild steel by special order. Certain styles for ski boats are available in heat-treated, anodized aluminum. Our couplers are shipped with a thick, protective peel-off plastic coating to prevent damage in transit. When a coupler or shaft needs replacing due to damage or wear, we recommend that the complete shaft/coupler assembly be replaced. Every solid-style coupler must be reamed to match the precise diameter of its mating shaft, since shafting stock has a diametrical tolerance range of +.002”and -.001”. A light interference fit (Class LN 3) is attained in every solid-style assembly. Best results are achieved when the two assembled parts can be faced and precision-straightened at the factory. Marine Hardware™, Inc. utilizes 70 manganese bronze for all yacht couplings. This alloy is very similar to that of propellers. The corrosion- resistant characteristic of this metal allows easy removal of the coupling from the shaft. Our ski boat couplings are of 6061 T6 aluminum, anodized for corrosion resistance. The desirable qualities of this material are its light weight and sound-dampening properties.