Controllable Pitch Propulsion

The gearboxes are suitable for a wide range of marine propulsion systems where controllable pitch propellers are used. The controllable pitch propulsion system (CPP system) can be designed for either mechanical or hydraulic operation of the controllable pitch propeller.

ME Production gearboxes are designed specifically to optimize the operation variable pitch propellers under all load conditions. The pitch propeller is adjusted quickly and smoothly from full ahead to full astern by the use of state-of-the-art technology.


CPP System Marine Gearbox Features

  • Completely integrated hydraulic servo system for pitch control which ensures easy installation, operation and maintenance.
  • Compact design
  • High reduction ratios available allowing large diameter, slow rotating propellers with high efficiency resulting in higher thrust and lower fuel consumption
  • Up to 3 PTO’s available per gearbox – each with independent hydraulic clutch if required
  • PTI for hybrid systems
  • Customized gear ratios and PTO/PTI design
  • Either mechanical or hydraulic operation of the propeller pitch
  • Approvals according to latest rules from classification societies


The ME Productions marine gearbox product range covers a power range from 150KW to 10.000KW and includes specialties such as:

  • HS = Built-in hydraulic servo gearbox
  • OD = Gearbox prepared for oil distribution systems
  • HSC = Compact gearbox for high speed vessels
  • PTO = PTO gearbox
  • Twin = Twin-in single-out twingear gearbox
  • HS/LS= Gearbox with long stroke for sailing yachts


Advantages of CPP System

Controllable pitch marine propulsion systems offer a wide range of advantages. The most important are:

  • Flexibility
  • Efficiency
  • Economy
  • Maneuverability

A controllable pitch propulsion system ensures that the vessel will feature both maximum towing power and optimum speed. This is only possible using a controllable or variable pitch propulsion system. The CCP system technology ensures that it is always possible to achieve maximum engine efficiency regardless of the operation mode of the vessel. By adjusting the pitch propeller, the engine can operate at maximum power without overloading the system. At lower than maximum vessel speed, fuel consumption can be considerably reduced by lowering the engine RPM while increasing the propeller pitch to maintain the required vessel speed. In this way overall efficiency of the propulsion system is optimized.