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A boat propeller shaft, particularly for inboard systems, is a critical component designed to transmit power from the engine to the propeller, facilitating the propulsion of the boat. The propeller shaft passes through the hull via a stuffing box or seal, which prevents water entry while allowing the shaft to rotate freely. This setup is crucial for efficient boat operation, ensuring that the propeller receives the engine's power without any significant power loss, thus maintaining optimal performance and fuel efficiency in marine vessels.
1-2 weeks delivery time Price incl. 19% VAT SKF SR thrust bearing. Exalto supplies two types of bearings: - Type ST: has a conical clamping sleeve that is mounted na the ingekamerde axis. - Type SR: with a conical clamping sleeve that is pressed directly onto the outside diameter of the shaft. The bearing is approximately 1/3 full of oil. Delivery up to 100 mm. Large bearings are available upon request. All dimensions in millimeters
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€ 1.044,29
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1-2 weeks delivery time Price incl. 19% VAT Pre-screw cutter. It is necessary to take into account the number of knives under the blades of the screw. 2 blades 2 and 3 blades, 3 blades - 3 and 5 blades, 4 blades - 4 blades. Used to protect the screw from networks, wire, packets, etc.
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€ 793,58
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1-2 weeks delivery time Price incl. 19% VAT The Hollex deadwood tube seal is used with water lubrication of the cardan shaft. It overlaps the axes in the longitudinal direction of the shaft. Sliding ring has polished surface. The combination of stainless steel with carbon will provide an ideal fit. The low coefficient of friction makes the structure durable. The best products from Europe for your ship.
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€ 748,69
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1-2 weeks delivery time Price incl. 19% VAT CENTAFLEX coupling type M for flexible coupling, especially for yachts where there are many requirements for vibration attenuation. It is offered in two sizes, with a capacity of 40 hp to 80 hp (depending on the speed of the propeller shaft). For decades, thousands of these couplings have been operating reliably on motor boats and sailing yachts. The large volume rubber element provides even torque transmission. The couplings have a turning retainer, so that the vessel remains controllable even if the rubber element breaks. Torque up to 500 Nm. Type M 127 has a standard 4 "flange connection. Type M 160 has both a 4 "and a 5" connection. Yanmar types are supplied with a connecting flange of Ø25 to 30 mm.
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€ 546,54
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1-2 weeks delivery time Price incl. 19% VAT The Exalto Duplex 1-4462 stainless steel propeller shaft, fully machined, comes complete with key, lock washer and fairing nut (with integrated anode). The taper 1:10 of the spool groove is made in accordance with ISO 4566. On order, we can make a shaft of any size, with any taper and with two ends.
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€ 516,73
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1-2 weeks delivery time Price incl. 19% VAT The seals of the Tides Marine SureSeal are suitable for use with cardan shaft lubrication. The cardan shaft is characterized by the use of a high-quality composite material with a long service life. It does not absorb water and is resistant to temperature changes. The Sure Seal comes standard with a flexible bellows and water intake. Removable front cover, will help replace the seal without removing the shaft.
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€ 514,80
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1-2 weeks delivery time Price incl. 19% VAT The Vetus Bullflex clutch is specially designed for optimal vibration suppression. Vibration due to torsional vibrations due to uneven engine operation, especially at low speeds, is effectively eliminated due to the flexible rubber insert. This prestressed rubber element ensures low noise, no play and no vibration when transmitting torque from the engine to the propeller. The Bullflex clutch reliably protects the gearbox from axial and radial impact, ensuring safe transmission of force under any conditions.
Another strength of the Bullflex clutch is the immaculate installation of the propeller shaft line.
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€ 470,70
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1-2 weeks delivery time Price incl. 19% VAT The Exalto Propeller Shaft-Hub Clamping Set is a versatile and adaptable solution designed for various marine applications. The connection flange is available in two forms: standard and machined, providing flexibility to meet specific requirements. These flanges can be customized to be compatible with CV joint couplings, Aquadrive thrust bearings, and all commonly used gearboxes.
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€ 441,52
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1-2 weeks delivery time Price incl. 19% VAT The main feature of these couplings is the possibility of breaking the shaft line by 2 °. These couplings dampen axial and radial vibration, providing a flexible connection between the shaft and the gearbox.
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€ 430,57
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1-2 weeks delivery time Price incl. 19% VAT Bronze deadwood pipe with support bearings. Slots in the pipe are made to facilitate bearing replacement. The shaft diameter and length of the stern tube are specified. The shaft diameter and length of the stern tube are specified.
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€ 390,42
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1-2 weeks delivery time Price incl. 19% VAT TOR Marine VTR propeller shaft bracket. These brackets are made of bronze. Each model comes complete with bearing grease. A great advantage of these brackets is that they can be set at any angle and at different heights. Thus, you will achieve maximum accuracy when placing. All dimensions in millimeters.
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€ 357,84
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1-2 weeks delivery time Price incl. 19% VAT Flexible coupling, has a special conical retainer, which guarantees one hundred percent concentric fit. This saves installation time.
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€ 350,27
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1-2 weeks delivery time Price incl. 19% VAT Discover the reliability and performance of Goodrich bearing from Exalto with our Rubber Cutlass Bronze Bearings. These bronze bushings are essential for ensuring the proper and high-quality operation of your propellers, providing a dependable solution for your marine needs.
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€ 350,27
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1-2 weeks delivery time Price incl. 19% VAT The Tides Marine SeriesOne duct seal can be used with lubrication during installation. The cardan shaft is made of a high quality composite material that does not absorb water and is resistant to temperature changes. These seals will allow any movement of the axle, thanks to their flexibility. The Tides Marine SeriesOne is available for 25 mm and 30 mm shafts. Other sizes are available on request.
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€ 304,30
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1-2 weeks delivery time Price incl. 19% VAT The Vetus Duplex 1-4462 stainless steel propeller shaft, fully machined, comes complete with key, lock washer and fairing nut (with integrated anode). The taper and keyway are in accordance with ISO 4566 or as requested by the customer.
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€ 290,05
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1-2 weeks delivery time Price incl. 19% VAT Vetus self-aligning internal bearing (gland), has a double seal for reliable protection against water leakage.
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€ 269,97
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1-2 weeks delivery time Price incl. 19% VAT Steel stern pipe with support bearings. Slots in the pipe are made to facilitate bearing replacement. The shaft diameter and length of the stern tube are specified.
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€ 232,85
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1-2 weeks delivery time Price incl. 19% VAT The Hollex 2V propeller shaft seal is made of bronze.
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€ 353,28
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1-2 weeks delivery time Price incl. 19% VAT The pre-screw cutter can be installed without removing the screw. Used to protect the screw from networks, wire, packets, etc. The shaft diameter is specified.
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€ 189
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1-2 weeks delivery time Price incl. 19% VAT TOR FLM connecting flange made of stainless steel grade C45, body galvanized. Fully zinc-treated and available in a variety of sizes. The diameter is indicated in the product card, or our specialist will find the right one for you. Elevation R in the table indicates the number of bolt holes in the flange. Versions Ø 25 and 30 mm for the shaft have a "connector 4." The connecting flange for the shaft Ø 35 and 40 mm has a 5 "connector.
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€ 144,08
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How does the material of an inboard boat propeller shaft impact its performance and longevity?
The material of an inboard boat propeller shaft significantly influences both its performance and longevity. Typically crafted from stainless steel or sometimes bronze, these materials are chosen for their strength, resistance to corrosion, and ability to withstand the harsh marine environment. Stainless steel shafts, for example, offer excellent toughness and resistance to pitting and crevice corrosion, crucial for maintaining the integrity and efficiency of the marine propeller shaft over time. The durability of these materials ensures that the shaft can handle the mechanical stresses of transmitting power from the engine to the propeller without deforming or failing, thereby providing reliable performance and reducing the need for frequent replacements.
What are the common types of bearings used with marine propeller shafts to ensure smooth operation?
Common types of bearings used with marine propeller shafts include cutlass bearings and roller bearings. Cutlass bearings, made from durable rubber and sometimes embedded with brass or other metals, are particularly favored for their ability to handle the high loads and abrasive conditions typical in the marine environment. These bearings ensure smooth operation by allowing the boat propeller shaft to rotate freely while minimizing friction and wear. Roller bearings, although less common in marine settings due to their susceptibility to corrosion, may also be used in some inboard boat propeller shaft designs where sealed units can protect against water ingress, offering efficient rotational performance and reliability.
What maintenance practices are essential for ensuring the longevity of marine propeller shafts?
Regular maintenance is crucial to ensure the longevity of marine propeller shafts. Key practices include frequent inspections for signs of wear or corrosion, particularly on inboard boat propeller shafts which are constantly exposed to marine elements. Lubrication of the shaft and its bearings is also essential to reduce friction and prevent overheating during operation. Additionally, it's important to check the alignment of the shaft periodically to ensure it has not shifted, as improper alignment can lead to uneven wear and potential damage to both the shaft and associated components, thereby maintaining optimal performance of the boat propeller shaft.