K690
Nogva Motorfabrikk K690 — High-power controllable-pitch propeller for large offshore support vessels and heavy fishing vessels.
Components & Design
Component data being added…
Technical Data
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Common failures & inspection points
Blade pitch setting and adjustment mechanism - verify smooth operation and absence of binding
Hydraulic servo system actuator response time and pressure settings - ensure proper functionality
Blade rotation and feathering capability - test full range from full pitch to feathering (zero thrust)
Bearing condition and lubrication (water-lubricated or oil-lubricated types) - check for leakage and contamination
Fasteners and hub attachment bolts - verify torque specs and presence of lock washers
Erosion and cavitation damage on blade surfaces - inspect leading edges and trailing edges
Propeller cone and boss for cracks, corrosion, and fretting damage
Control linkage and feedback sensor calibration - ensure accurate pitch indication and control response
Type-general inspection and maintenance points for this equipment category — not model-specific.
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