Steplessly vary the propeller
rotation at constant
Variation of propeller rotation
at engine idling speed
Variation of propeller rotation at nominal
speed, full firefighting pump output and
simultaneous low propeller rotation for
holding position via drive system
|Power *||2.900 kw||4.150 kw||2.750 kw|
|Speed *||1.800 min-1||1.600 min-1||750 min-1|
|Torque||15.750 Nm||25.000 Nm||35.650 Nm|
|Heat dissipation||45 kW||90 kW||450 kW|
The Prop.act makes it possible to steplessly vary the propeller rotation at constant engine speed and, vary the thrust via the control lever. The unit is confi gured for continuous operation and as such can be used for dynamic positioning.
The Prop.act is a self-sufficient clutch system which comprises of an operationally ready clutch unit and the Prop.act control system. The unit can be freely positioned in the drive train and is mounted on the floor of the vessel. The engine and rudder propeller can be connected using drive shafts, for example. The Prop.act control system is connected to the ship‘s control. The supplied cooling system is integrated in the ship‘s cooling circuit. Free accessibility of the Prop.act facilitates ideal service conditions with a self-sufficient oil circuit, which is adapted optimally to the clutch system.
The Prop.act HD is primarily used for applications with firefighting systems. Here, the firefighting pump can be operated by the main diesel engine while the drive remains active to hold the position at low propeller rotation.
All features in one clutch-system.
As shaft brake and for extremely precise variation of propeller rotation
As an option, the Prop.act is offered with a brake that provides two functions:
1. As classic shaft brake for holding the propeller and thereby securing the propeller position to prevent unintended rotation. The braking torque is set at 50 % of the engines’ nominal torque. Idling torque from the clutch is suppressed.
2. For variation of propeller rotational speed: The trolling range is enhanced. By applying a low braking torque, the propeller speed is regulated from zero up to the desired speed.
Additional power supply
The Prop.act is equipped with a power take-off (PTO). The customer can use the PTO, for example, to drive the pump for propeller adjustment.
Simple integration into vessel control system
We offer the Prop.act as a package complete with a control system. In other words: Our customers do not have to bother with programming or actuation of the components and can completely rely on Ortlinghaus to do this. Integration of our controls in the vessel control system is straightforward, and described on provided integration sheet.
Secure towing even in strong waves
Ortlinghaus offers an electric pump that can be run independently of the diesel engine. As desired for towing manoeuvres, for example, the shaft brake can also be used with this pump while the diesel engine is switched off. Clutch operation can be maintained even if the engine speed is lowered below a critical point.
Permanent condition monitoring prevents overload
The availability of our units is secured through permanent condition monitoring of all of the relevant components. Monitoring of the units is achieved by recording the speeds, pressures and temperatures. If the permissible parameters are exceeded, our control system prevents an overload.
Full propeller control.
The possibility of continuous slipping makes safe manoeuvring possible even under rough sea conditions and challenging escort manoeuvres.
Straightforward integration of the Prop.act in the drive train is facilitated by free positioning in the drive train between the rudder propeller and engine, together with the control system supplied as an option and the dedicated cooling system.
The slipping function offers a high level of safety against stalling of the diesel engine. The captain therefore always has a secure drive system at his disposal, allowing fast reactions to loss of drive or control of escorted ships.
If deployed correctly, the unit achieves a main service interval of at least 40,000 operating hours.
The sturdy construction of the unit offers a high level of operational reliability.
The slipping function of the clutch in combination with the additional brake makes it possible to vary the propeller speed to almost zero.
The combination of Prop.act and rudder propeller drive with fixed pitch propeller (FPP) is a cost-effective alternative to controllable pitch propeller (CPP) drives.
This type of installation saves space compared with separate firefighting drives.
Fast reaction times, global presence and extensive know how of our Service Team make the difference.
“Excellent clutch for harbour tugs with a proven design based on decades of experience and knowledge.”
Former product director tugs and workboats at DAMEN shipyards
“Ortlinghaus is providing outstanding engineering support as our reliable partner for more than 15 years.”
Chief executive officer (CEO) & president ‘Industrial Operations’ at SCHOTTEL GmbH
04 – 07 Jun 2019 | Norway
Nor-Shipping is at the centre of the oceans. This is where the maritime and ocean industries meet every two years – a natural hub for key decision makers from across the world to connect, collaborate and do deals to unlock new business opportunity. This is your arena for ocean solutions.
03 – 06 Dec 2018 | China
Our representation in China, Ortlinghaus International Trading (Shanghai) Co., Ltd., looks forward to seeing you. Marintec China is poised to be the definitive event and is undoubtedly a must-attend marine exhibition for all involved in the maritime industry.
04 – 06 Dec 2019 | USA
Our representation in USA, Orttech, looks forward to seeing you. North America’s largest commercial marine tradeshow in New Orleans, La. The WorkBoat Show is the only solution that can connect you to the best resources in the maritime industry all in one convenient location.
11 – 13 Jun 2019 | UK
Our representation Ortlinghaus UK looks forward to seeing you. Seawork International is Europe’s largest commercial marine and workboat exhibition.