R&D Flexible Coupling 4in B/W, PRM, ZF-Hurth, Tech (3hp/100RPM) 807114

The R&D Flexible Coupling 4in B/W for PRM and ZF-Hurth transmissions is engineered to accommodate engines from 5 to 1500 HP. Its contoured flexible disc, molded from durable Polyester Elastomer, absorbs misalignment caused by boat structure flexing or engine movement on vibration mounts, reducing noise and vibration transmission. This fail-safe coupling installs easily between existing shaft flanges without machining, supports propeller thrust, and resists saltwater, diesel, and lubricating oils. It also provides electrical continuity, making it a reliable and low-maintenance solution for marine propulsion systems.