Hydraulic Teignbridge Propellers

Hydraulic Teignbridge Propellers

Hydraulic propellers and couplers show up from time-to-time.  We found both on the 87′ Oceanfast project.  Hydraulic propellers are installed on shafts with a very shallow or flat taper.  There are no keys or keyways in the shaft.  Hydraulics are connected to the ports and inject a high pressure layer (up to 40,000 PSI) of hydraulic fluid between the prop hub and shaft.  The hydraulic pressure expands the prop hub and creates a layer of fluid that allows the prop to slide off the shaft (actually it goes with a bang similar to popping any mechanical prop).