October 16, 2015

Port Moody, BC, Canada:  The first generation of the Autonav Rotary Vane steering systems were put into service over 20 years ago in the RCN Halifax Class Frigates and since then have undergone over 60,000 hours of service with minimal maintenance. On recently inspecting one of these early systems the seals and bearings were confirmed to have zero measurable wear due to the unique bearing and seal design. While rotary vane steering actuators are much more compact and lower weight than traditional Ram systems, their internal sealing has frequently been a problem which caused rudder drift under load. In addition the internal bearings would score and wear, requiring expensive...

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