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.
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1-2 weeks delivery time Price incl. 19% VAT The Exalto Propeller Oil Cooling System is designed for the efficient lubrication of the Exalto propeller shaft, specifically available in types SA and SV. This system incorporates a seal directly on the shaft and should be securely attached below the stern pipe.
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1-2 weeks delivery time Price incl. 19% VAT The Exalto Propeller Oil Cooling System with Receiver is a specialized lubrication system designed for the Exalto propeller shaft. It is crucial that this system is precisely positioned on the bushing and includes a receiver of SB and SC types. The seals within the system are designed to allow for a small radial clearance.
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1-2 weeks delivery time Price incl. 19% VAT The Bronze Shaft Bearing, designed for various marine applications, offers reliable performance and durability. With a size of 1 inch, it features a hydro-lubricated design that ensures smooth operation while supporting rotating shafts. Made of bronze with rubber lining, it is suitable for measuring internal and external diameters in inches, with the product number 2727525 FNI.
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€ 86,24
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1-2 weeks delivery time Price incl. 19% VAT The Bronze Shaft Bearing 1"1/8 is engineered for optimal performance in hydro lubrication applications, providing durability and efficiency. It features a product number of 2727528 FNI, an inner diameter of 1"1/8, and is made of bronze with a rubber component. This hydro-lubricated shaft bearing is designed with precise internal and external dimensions measured in inches.
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€ 103,49
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1-2 weeks delivery time Price incl. 19% VAT The Bronze Shaft Bearing 1"1/4 is crafted for reliable performance across various applications, featuring a durable construction with hydro lubrication for enhanced functionality and longevity. It is made of bronze with rubber, and its product number is 2727531 FNI. This hydro-lubricated shaft bearing is designed with specific internal and external dimensions measured in inches.
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€ 103,49
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1-2 weeks delivery time Price incl. 19% VAT The Bronze Shaft Bearing 1"1/2 is engineered for dependable performance across various applications, featuring a sturdy construction and an efficient hydro-lubrication system for smooth operation and durability. It has size of 1.5 inches, is made of bronze with rubber, and is identified by the FNI Product Number 2727538.
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€ 122,46
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1-2 weeks delivery time Price incl. 19% VAT The 1"5/8 bronze shaft bearing is designed for optimal performance and durability, featuring a hydro-lubricated system that ensures smooth operation and efficient power transfer while reducing wear. It has a product number of 2727541 FNI and is made from bronze and rubber.
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€ 127,64
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1-2 weeks delivery time Price incl. 19% VAT The Bronze Shaft Bearing 1"3/4 is a high-quality component designed for optimal performance and durability in various applications. It minimizes friction and wear, ensuring smooth operation while providing effective shaft support and guidance. This hydro-lubricated bearing features a combination of bronze and rubber materials, making it a reliable choice for various needs. FNI Product Number: 2727544.
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€ 163,86
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1-2 weeks delivery time Price incl. 19% VAT The 2" Bronze Shaft Bearing is engineered for dependable performance and longevity across various applications. Featuring a hydro-lubricated design for smooth operation, this high-quality bearing incorporates bronze with rubber components, ensuring durability. Its FNI Product Number is 2727548.
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€ 193,18
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1-2 weeks delivery time Price incl. 19% VAT The Bronze Shaft Bearing is a highly durable and reliable component designed for various industrial applications. With a robust construction, it features hydro-lubrication for smooth operation. Key specifications include a diameter of 2"1/2, made from bronze and rubber, under FNI Product Number 2727549.
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€ 329,44
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1-2 weeks delivery time Price incl. 19% VAT The Rubber Shaft Bearing 22 mm is a crucial component for French sailing boats, designed to provide optimal support and stability for the shaft's operation in marine environments. Made of rubber, this bearing (Product Number: 2727700 FNI) ensures smooth performance and is specifically engineered for use in sailing applications.
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€ 17,79
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1-2 weeks delivery time Price incl. 19% VAT The Rubber Shaft Bearing, with a diameter of 22 mm and product number 2727701 FNI, is a high-quality component designed for use in French sailing boats. Made from durable rubber, it ensures smooth operation and reliability, making it an essential part of your boating equipment.
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€ 19,11
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1-2 weeks delivery time Price incl. 19% VAT The Rubber Shaft Bearing, designed specifically for French sailing boats, has a diameter of 25 mm and is made from high-quality rubber. This essential component ensures smooth operation and longevity, providing a reliable and durable solution for shaft support in marine environments. FNI Product Number: 2727702.
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€ 18,99
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1-2 weeks delivery time Price incl. 19% VAT The Rubber Shaft Bearing, designed for French sailing boats, measures 25 mm and is made of rubber. It effectively reduces shaft vibrations and wear, ensuring smooth sailing operations. Its product number is 2727703 FNI, making it an ideal choice for enhancing performance in maritime activities.
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€ 21,45
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1-2 weeks delivery time Price incl. 19% VAT The Rubber Shaft Bearing, designed specifically for French sailing boats, offers optimal performance and reliability with its robust construction and precise 30 mm diameter. Made from durable rubber, it ensures long-lasting performance and excellent resistance, making it ideal for various maritime applications. Product Number: 2727704 FNI.
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€ 22,19
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1-2 weeks delivery time Price incl. 19% VAT The Rubber Shaft Bearing, designed specifically for French sailing boats, is a 35 mm component made of durable rubber. It offers reliable performance in marine environments, enhancing shaft support and reducing vibration, making it ideal for sailing boat applications (Product Number: 2727705 FNI).
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€ 36,50
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1-2 weeks delivery time Price incl. 19% VAT The 40 mm Rubber Shaft Bearing is specifically designed for French sailing boats, providing smooth and reliable performance in marine environments. Made of rubber, it helps reduce friction and wear on the shaft, leading to enhanced durability and efficiency. The product number is FNI 2727706.
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€ 29,18
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1-2 weeks delivery time Price incl. 19% VAT The Bronze Shaft Bearing, with a size of 25 mm and product number 2727725 FNI, is crafted from durable bronze and rubber materials, making it ideal for various applications where lubrication is essential. Its hydro-lubricated design ensures optimal performance and efficiency, making it a reliable choice for demanding environments.
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€ 86,24
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1-2 weeks delivery time Price incl. 19% VAT The Bronze Shaft Bearing 30 mm is a durable and efficient component designed for demanding applications. Made from high-quality bronze and rubber, it features a diameter of 30 mm and uses hydro lubrication for optimal performance. Its product number is 2727730 FNI.
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€ 106,94
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1-2 weeks delivery time Price incl. 19% VAT The Bronze Shaft Bearing, designed for durability and optimal performance in industrial applications, features a 35 mm diameter and is hydro-lubricated to ensure smooth operation and robust support for rotating shafts. Product number 2727735 FNI, it is made from bronze and rubber.
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€ 113,84
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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.
The precision in manufacturing inboard propeller shafts is crucial for optimal performance and longevity. Leading manufacturers use CNC (Computer Numerical Control) machining to ensure that each prop shaft is crafted to exact specifications, maintaining balance and reducing vibrations. This precision helps in achieving a seamless fit between the prop shaft and the prop hub, which is essential for the smooth transmission of power. Utilizing advanced manufacturing techniques, these inboard propellers are designed to meet the high standards of the marine industry, ensuring reliable and efficient operation in various boating conditions.
What are the common types of bearings used with marine prop 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.
Stainless steel inboard propellers and custom propeller solutions are crucial for achieving high performance and reliability in various boating conditions. Boat builders often choose stainless steel shafts and custom inboard propellers for their strength and resistance to corrosion. Various companies offer a range of shaft sizes and materials, including A19, A17, and A22 stainless shafts, ensuring durability and precision. Custom inboard propellers and shafts are machined to exact specifications, such as SAE J755 standards, to provide the best fit and performance. These components are essential for maintaining the integrity of the boat's propulsion system, reducing the risk of issues like bent prop shafts, and ensuring consistent and efficient power delivery.
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.
Maintaining the boat shaft also involves understanding the specific needs and variations of your equipment. General propeller-gp and exclusive boat shaft solutions are available for different boating requirements, ensuring the right fit and performance. OEM stock parts, including propeller tapers, are known throughout the marine industry for their reliability. Contact us for more information on our selection of precision-machined, high-strength shafts, which are cut to SAE J755 standards and offered with quick delivery. Our products strive to provide exceptional and innovative solutions for all boating needs. We look forward to assisting you with the finest boat shafts and components to support your important boating skills.
What types of Boat Propeller Shaft do you have in your catalog?
Stern Tubes for Boats, Cutlass Bearings, Propeller Shaft Seals, Boat Propeller Nuts, Flexible Shaft Couplings, Marine CV Joint & Drive Shafts