Hundested Propeller A/S - Stadionvej 4 - DK-3390 Hundested
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Technical description of Hundested Multi Pitch Propellers


The propeller hub

The propeller hub is made of nickel- aluminum-bronze and is attached to either a flanged shaft or tapered end shaft, depending upon the system size. The propeller blades are moved by a tie rod cross head with stainless pins.

On each pin a movable slipper block is mounted in a milled slot in the blade foot.

The propeller head is lubricated with water emulsifying grease.

The mechanism of the propeller head consists of simple mechanical parts.

The propeller blades

The blades are made of nickel-aluminium-bronze in 2, 3, or 4 bladed design. They are designed for open running and propeller nozzles, as well as for feathering position.

 The VP-series

The propeller shaft

The standard propeller shaft is supplied in OH-steel. Stainless steel can also be supplied on request. The shaft is hollow bored for a solid tie rod.

The stern tube

The standard stern tube is of bronze, for grease lubrication. Oil lubricated stern tubes are made of steel. Water lubricated stern tubes are supplied on request.

Flanges

The flanges are manufactured to suit the particular gear or coupling in use.


 The MP-series


The advantages of variable/reversible propellers

  • A fixed propeller, designed for maximum speed, cannot give maximum power at low speed, while a fixed propeller designed for power, cannot achieve maximum speed.
  • With a controllable pitch propeller it is always possible to obtain full utilization of the engine, irrespective of the purpose of the vessel.
  • Maximum horsepower can be taken from the engine – without overloading – by changing the pitch.
  • Even if the engine drives a winch or a shaft generator, the number of revolutions can be kept constant – and the speed of the vessel can then be regulated by means of the propeller pitch.
  • At lower than the maximum speed, the engine’s fuel consumption can be reduced considerably by increasing the pitch and lowering the number of revolutions while maintaining the required speed. In this way the loading of the engine, and the total efficiency of the unit is increased.
  • Using fully reversible propellers, only a reduction gearbox is needed.
  • When using sail and engine power at the same time, the correct pitch can always be obtained so that wind and engine together are utilized in the best possible way.
  • Prompt and inexpensive replacement of individual blades in case of damage to the propeller.
  • Engine idle speed on a fixed pitch propeller vessel often propells the vessel too fast for docking maneuvers, whereas a CP propeller offers supperior low speed vessel control.

The advantages af Hundested Multi Pich propellers

  • We have extensive experience in the design and manufacture of variable pitch propellers: We began manufacturing in 1929!
  • We have supplied more than 10,000 propeller units.
  • We always carry large stocks of spare parts – therefore prompt delivery – and a high level of service.
  • Simple and rugged hub/blade design with no bearings or seals to maintain
  • Our propeller units can be approved by all major classification societies
  • Our propeller units can be adjusted to individual requirements.
  • We supply complete propeller units including propeller nozzles, line shaft bearings and flexible couplings.
  • Our propeller units have been supplied to the leading engine makers – and to almost all types of vessels, tugboats, ferries, training ships, yachts etc.