Controllable-Pitch Propeller (CPP) · Shaft Line & Propulsion
This equipment is commonly used in large commercial vessels, such as cargo ships and tankers, where reliable propulsion systems are critical for efficient maritime operations. The BCP 760, with its robust design, is specifically engineered to handle the demands of high-power applications, providing optimal performance under various sea conditions. The propeller, made from Cu Ni Al Bronze, ensures durability and corrosion resistance in saltwater environments. It features a diameter of 3000 mm and four blades, delivering a rated power of 2500 kW at a maximum shaft speed of 184 RPM. The hydraulic system, which includes a DENISON PV20E pump and a VEM motor, operates at a calculated pressure of 35 BAR and a working pressure of 45 BAR, ensuring smooth and reliable operation of the pitch control unit. The remote control system, type ERC3000, allows for precise control from both the bridge and engine room, enhancing safety and operational efficiency. Additionally, the sterntube seals and shaft alternator contribute to the overall reliability and maintenance of the system, facilitating smooth and efficient propulsion for the vessel.
Source: pdfcoffee.com · not checked against a manufacturer datasheet
| Hub oil sampling/analysis | every 3-6 months, or per manufacturer's condition monitoring programme |
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| Hydraulic/servo oil change | per manufacturer's manual - commonly every 1-2 years or on condition |
| Blade seal renewal | typically at drydock intervals (roughly every 2.5-5 years) - condition and manual dependent |
| Hub seal renewal | condition-based, checked at each drydock |
| Pitch indicator calibration check | annually and after any maintenance affecting the OD box |
| Hub oil water content | commonly flagged for follow-up inspection once free water becomes visible on sampling - exact acceptance limits vary by the maker's own condition monitoring programme, so use Berg Propulsion's criteria for this hub rather than a generic figure |
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Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.
Class typically wants hub oil sample results and any seal/blade work logged against the CPP's continuous survey or drydock survey items; a hub oil sample showing water contamination without a follow-up seal inspection is a common finding.
Estimated lifetime: Not typically hours-rated; overhaul is driven by condition (oil sample results, seal leakage, blade wear) and drydock cycle rather than a fixed running-hour figure - confirm any interval against Berg Propulsion's own manual for the BCP 760.
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