R & D Flexible Shaft Coupling f/5" B/W, Hurth, & Volvo - 25HP/100RPM Capacity

Flexible Shaft Coupling for 5" B/W, Hurth, & Volvo - 25HP/100RPM Capacity

The R & D Marine Flexible Coupling consists of a flexible disc molded with a polyester elastomer. The disc gives clearance for bolt heads and is able to flex freely to take up any temporary misalignment of the engine and shaft due to flexing of the boat structure or the engine moving on its mount. Forward thrust is taken in compression on the disc between the two half couplings, and reverse thrust is retaken in compression on the disc between the two fail-safe straps. In the unlikely event of a severe impact, the steel straps make the coupling fail-safe and ensure the drive is maintained both forward and reverse.

Reduce Engine Noise & Transmission Vibration

Staggered bolts enable the element to isolate vibrations and compensate for some misalignment.

Reduces Costly Transmission Repairs

Absorbs shock loads due to hard gear changes.

Fits Most Major Transmissions

For engines, 5 to 1,500 horsepower It fits brands such as Borg Warner, ZF-Hurth, Twin Disc, Volvo, Yanmar, Technodrive, and more.

Under Compression Load In Both Forward & Reverse

The aft steel strap bolted to the transmission acts as a backing plate to prevent reverse thrust from pulling the element apart.

Quick & Easy Installation

The R & D Marine Flexible Coupling requires no machining and comes supplied with bolts to connect between the two existing shaft flanges.

Extremely Durable

Impervious to saltwater, diesel, and lubrication oils. The Flexible Couplings are made from a polyester elastomer not affected by saltwater, diesel, or lubrication fluids.

Fail-Safe Design

A fail-safe design is incorporated in the R & D Flexible Shaft Coupling that prevents the two couplings from pulling