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Bollinger Shipyard's Propeller Shop is a modern 27,500 square feet fully-equipped manufacturing and repair facility featuring pitchometers and four hydraulic presses with up to 400 tons capacity that allows straightening and re-pitching propellers of up to 20 feet in diameter without heating the metal.
The shop's computerized pitchometer is capable of measuring pitch, blade widths, diameter and rake. It also creates a detailed image of each propeller blade, that indicates the exact point of required work. This dramatically reduces propeller survey time, provides more accurate measurements, reduces overall time in the shop and improves propeller performance and efficiency.
Bollinger Quick Repair has been in the propeller manufacturing business since the late 1940's. We have over 2000 propeller patterns in stock and the capability to make a new pattern in 10 days. All Bollinger propellers meet or exceed ABS requirements. Propellers for Sale
The shop also services other industries such as municipal drainage systems with huge impellers. Storage of customers' propellers is also available.
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When using a controllable pitch propeller it is always possible to optimize the motor and propeller to current payload, wind and water resistance. The results are low fuel consumption and proper motor load, as well as good manoeuvering qualities.
Controllable pitch propellers are used for all types of boats, and usually have three or four blades. West Mekan calculates and produces these propellers in diameters of up to 1500mm, for speeds up to approximately 40 knots.
Fixed adjustable propellers with more or fewer blades can be specially designed.
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CP Propeller
The CP Propellers are manufactured from 1000 mm to 5000 mm in diameter. They are delivered with 3, 4 or 5 blades. The propeller hub and blades are manufactured in Ni.Al.-bronze. They can also be delivered in Stainless steel. The hydrodynamic blade design calculations are based on detailed analysis in computers together with Finnøys long experience.
The propeller shaft is hollow bored and made of carbon steel or stainless steel. The pitch is adjusted by the push pull rod. It transfers the axial force from the servo piston in the gearbox to the pitch setting mechanism in the propeller hub. The propeller hubs, type P26 to P48, are grease lubricated and from P39 to P125 are oil lubricated.
The stern tube is delivered complete with bearings, sealing boxes and a gravity tank for stern tube oil. The stern tube can be delivered suitable for either oil or water lubrication. The sealing boxes are Finnøys own design, but other types can also be supplied. The propeller shaft flange is a split type for the smaller shafts and an oil shrink type for the larger shafts.
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Helseth's product portfolio is made up of 3- and 4-bladed propellers designed with the help of modern tailor made computer programs, and manufactured in high quality materials.
All propeller blades are tailor made for each vessel and designed by use of top modern design software and experienced designers to fit the vessel perfectly. The propeller hub and pitch-control mechanisms are designed by use of top modern FEM-analysis tools to ensure low weights and sufficient strengths to survive the most hazardous environments.
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SCHOTTEL controllable-pitch propellers (SCP), manufactured by SCHOTTEL-Schiffsmaschinen GmbH (formerly WPM), are propulsion systems that can be used with almost any type of vessel. The power spectrum ranges from 600 kW to 30,000 kW, with propeller sizes varying between approximately 1.5 to 8.0 metres.
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Scana Volda manufactures controllable pitch (CP) propellers in the power range from 500 kW to 15.000 kW, with propeller diameters from approx. 2000 mm to 7500 mm. The hydrodynamic design of the propeller blades, preferably based on data from model tests of the vessel and adapted to the ship's service profile, ensures the customer's optimum overall efficiency of the vessel. Scana Volda's construction criteria are always based on minimum cavitation and lowest possible noise and vibration level.
Scana Volda CP Propellers comes in a wide range of design varieties:
Standard hub range from 520 - 1350 mm
Range of 4 bladed propellers
Controllable pitch propellers with the servo motor either in the gear, in the shaftline or in the propeller hub
Propellers are made from NiAl bronze or stainless steel
Blade design with high skew or normal skew blades
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Description:
-Hydraulically actuated Controllable Pitch Propeller.
-Suitable for all types of commercial vessels including fishing boats, tugs, ferries.
-Suitable for all types of government vessels, e.g. coastguard and defense craft.
-Well-proven design, highly reliable and simple to install.
-Compatible with all types of engines and transmissions.
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Controllable pitch (CP) propellers are the ideal choice for ships with frequent port calls as they provide excellent manoeuvrability, thus saving ship time and tug costs. Wärtsilä CP propellers guarantee superior propeller efficiency, reliability and minimum noise and vibration levels due to tailor-made designs with the latest available technology.
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All propeller blades are tailor made for every project giving the optimum propeller for each and every ship. The design of propeller blades is based upon Helseths long experience in manufacturing of propellers, and by use of sophisticated design and analysis tools giving a low noise propeller with high efficiency and no cavitation problems.
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One of a pair of handed propellers supplied to the UK Ministry of Defence for the twin screw Auxiliary Oiler Replenishment Tankers “Fort George” and “Fort Victoria”. These propellers, which have a very complex geometry, were designed by DERA, Haslar.
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Blades: 3,4,5
Pitch Ratio: 0.60 - 2.00
Area Ratio: 0.20 - 1.10
Skew Angles: 0°
Section Type: Ogival:
Remarks: Most widely use propeller series. Suitable for most applications. Cupped available.
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In order to achieve the highest possible total efficiency of the vessel, the propeller must be a perfect match with the engine and the hull. A fixed pitch (FP) propeller is the choice when optimum efficiency, reliability and robustness are required. FP propellers are usually applied in ocean sailing vessels, for example container vessels, tankers, bulk carriers and dry cargo vessels.
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HHI produces a wide variety of marine propellers, with a current production capacity of 210 sets per annum.
Our propellers have a diameter up to 11 m, and a maximum unit weight of 114 ton, and are made from such materials as manganese bronze and nickel-aluminum bronze.
Hyundai employs a comprehensively computerized design, manufacturing and inspection system for these products.
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One of a series of high powered propellers designed and manufactured by SMP for A. P. Moller. These 6 bladed 9000 mm diameter units, with a blade area ratio of 95%, are designed to absorb 55MW and weigh 86,000 kgs in SMP Nikalium alloy.
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Blades: 3,4,5
Pitch Ratio: 1.00 - 2.00
Area Ratio: 0.50 - 1.00
Skew Angles: 0°, 30°
Section Type: Crescent:
Remarks: Suitable for higher speed range in trans-cavitating application.
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Blades: 3,4,5
Pitch Ratio: 0.60-1.60
Area Ratio: 0.55-0.75
Skew Angles: 0° , Skew available
Section Type: Aerofoil:
Remarks: Suitable for accelerating nozzle propellers and bow or stern thrusters.
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Helseth's product portfolio is made up of 3- and 4-bladed propellers designed with the help of modern tailor made computer programs, and manufactured in high quality materials.
All propeller blades are tailor made for each vessel and designed by use of top modern design software and experienced designers to fit the vessel perfectly. The propeller hub and pitch-control mechanisms are designed by use of top modern FEM-analysis tools to ensure low weights and sufficient strengths to survive the most hazardous environments.
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Blades: 3,4,5
Pitch Ratio: 0.60 - 2.00
Area Ratio: 0.50 - 1.10
Skew Angles: 25°, 30°, 35°
Section Type: Ogival:
Remarks: Modified from standard KCA series for smooth application. Suitable for most applications. Cupped available.
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Propeller Design
All ships have individual needs. Speed is important for some ships. Towing pull is more important for others. To satisfy these needs Finnøy use the most suitable software together with Finnøys knowledge when designing propeller blades. The propeller blade is designed for best possible performance regarding thrust, efficiency, noise and vibration. The blades are ground and balanced according to ISO 484 standards.
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A range of controllable pitch propellers is available with diameters up to approximately 8500 mm and rated for engine outputs of up to 30 000 kW.
MAN Diesel's advanced propeller blade design and calculation methods exploit the latest hydrodynamic theories and tank test results to create a propeller design that ensures maximum efficiency while maintaining low noise and low vibration characteristics.
Complete propulsion packages can be tailored to meet specific requirements by using these propellers in association with MAN Diesel two-stroke or four-stroke diesel engines and, where applications demand, reduction gearboxes.
The MAN Diesel two-stroke propeller as well as four-stroke propeller programme is presented in the Marine Engine IMO Tier I Programme as well as the Marine Engine IMO Tier II Programme.
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For decades, the MMG manufacturing program includes propeller blades for the most different purposes in use, as CPP propellers, build up propellers and POD drives for various typs of ships.
It will be precisely casted and manufactured according to the specifications and construction requirements of our customers.
Almost all noted manufacturers of CPP propellers in Europe and Asia are part of our clientele.
Long-standing experience in dealing with the most different constructions of propeller blades, efficient CAD technology, nonpolluting foundries, most up-to-date 5-axis CNC milling technology and the qualification of our employees are the guarantor for the 100 percent observance of the customer`s requirements in the respective construction of the propeller.
A taking over of the data files is possible, directly from the CAD programs of our customers into the MMG CAD-Sytem.
MMG supplies propeller blades of all sizes and designs.
An efficient technology in casting, measuring and machining as well as the long-standing experience of our employees safeguard the highest possible level of quality in all lines of production.
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Reliable, heavy duty mechanical hub design for high power density
Blade trunnions are supported in the hub in double journal bearings
Moderate oil pressures for pitch control, large servomotor piston
Small hub / propeller ratio
Low noise design
Low stresses, even load distribution
Superior hydrodynamics and hydroaccoustics
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The propeller is of course one of a ship`s key "attachments".
As the critical intermediary between the power of the main engine and the water, it must push the ship across the oceans at the highest possible speed. The propeller of a large container ship rotates about 140.000 times a day. This performance must be maintained over prolonged periods, under difficult conditions. We have made it our business to design and produce propellers that can easily cope with these demands.
More than 50 years of experience in the design and production go into MMG propellers, combined with the latest computer-aided numerical processes and the most up-to-date equipment in the foundry and machining workshops. By constant investment in all areas, we keep abreast of the latest developments in international shipbuilding.
MMG (Mecklenburger Metallguss GmbH) is thus one of the leading propeller manufacturers in the world. We produce propellers for all categories and sizes of ships. This also includes propellers for post-panamax container ships, VLCCs and special propellers for the navy.
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