Controllable Pitch Gearboxes

We have designed and produced our own marine gearboxes since 1985. We call them CPG (Controllable Pitch Gearbox). This is because they all have built in pitch control for the propeller. The hydraulic system of all CPG gearboxes includes a double oil pump. One pump is utilized exclusively for the pitch control and the other one is utilized for the clutch, a possible shaft brake, and lubrication.

  • From 300 HP to 4500 HP – Depending on engine RPM and the reduction ratio
  • All sizes have ground, case hardened, helical gear wheels
Special features and Individually Delevoped Gearboxes Available

A special feature is the modular PTO system to drive hydraulic pumps or generators.
All PTO’s have an individual hydraulic clutch. Up to 3 PTO´s is available for all sizes.

If an extremely noise and vibration free system is required our gearboxes can be delivered with both semi-flexible foundations as well as a semi-elastic coupling on the gearbox output shaft. These features mean that any noise and vibrations will not be transmitted to the hull. These features have become a request from our customers in the pleasure boat industry.

Beside our standard product line we offer individually developed gearboxes to meet whichever special requirements the customer may have regarding dimensions, power, reduction ratio, PTO´s, angle gears etc. This means that we can supply special gearboxes which no other supplier can deliver.

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CP Gearbox References

“Yaquina” – Dredger
Main info:
Shipyard: Norfolk Shipbuilding and Drydock
Lenght o.a.: 61 m
Main engine: 2 x MTU 8V4000 M60, 1200 HP @ 1800 RPM

Hundested supply:
Propeller unit: 2 x MP700, Ø2300 mm
Gearbox: 2 x CPG120, 6,3 : 1

“FT Albaro” – Oil/Chemical tanker
Main info:
Shipyard: Anadolu Shipyard
Length o.a.: 98 m.
Main engine: Himsen, 3550 HP @ 900 RPM

Hundested supply:
Propeller unit: MP950, Ø3800 mm.
Gearbox: CPG400, 5,5:1, 1 PTO/PTI

“Three Forty Three” – Fire boat
Main info:
Shipyard: Eastern Shipbuilding
Lenght o.a.: 42 m
Main engine: 4 x MTU 12V4000 M70, 2285 HP @ 2000 RPM

Hundested supply:
Propeller unit: 4 x MP500, Ø1800 mm
Gearbox: 4 x CPG120, 4,1 : 1