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Controllable Pitch Propeller (CPP) Propulsion Gearboxes

Controllable Pitch Propeller (CPP) standard gearboxes include eight models, ranging from 100 kW to 5000 kW.

The model range is described by the centre distance between input-output shafts in millimeters.

Gearbox type Ratio range Power range (kW) Max rpm
200 2:1/5:1 100-350 3600
250 2:1/5:1 200-500 3000
300 2:1/6:1 300-800 3000
375 3:1/7:1 350-1500 3000
450 3:1/7:1 500-2000 3000


For special requirements the standard model may also be modified in a cost-efficient way. Larger than 5000 kW models are tailored according to customer requirements.

Standard features

  • built-in hydraulic servo for propeller pitch operation
  • a high number of integrated PTOs/PTIs on each gearbox
  • a wide range of high torque/power PTOs/PTIs
  • integrated hybrid capability
  • DNV-GL Type Approval

Optional features

  • two-speed capability, i.e. switching between two ratios
  • two-step capability, i.e. high ratios (> 6:1)Two-speed, i.e. to transmission ratios
  • OD-box for propeller pitch operation
  • condition monitoring system
  • shaft brake


  • High efficiency – Minimizing power loss and saving energy
  • Modular structure – The ability of adding additional equipment and variety of mounting arrangements
  • Several gearbox sizes and wide range of ratios – Guarantees optimal gearbox size
  • Flexible product structure - Easy to customize for the customer needs

After Sales Services

  • Start-up and installation services
  • Maintenance services
  • Regular inspection visits
  • Maintenance consulting services
  • Original spare parts
  • 24/7 on-call service

Please send more information regarding CPP propulsion gearboxes