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 Vesconite HiLube Bearing, measuring ø70xø90xL=280mm, offers enhanced performance and durability through its advanced material composition that provides high wear resistance and excellent lubricating properties. It is identified by product number VL70A and has an inner diameter of 70 mm, outer diameter of 90 mm, and is sold as a single piece. The bearing is part of the Vesconite brand and is designed for various applications, with an EAN code of 8720193038834.
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€ 516,22
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1-2 weeks delivery time Price incl. 19% VAT The Vesconite Bearing, with dimensions of ø55xø30x10mm, is designed for high-performance applications, providing exceptional durability and low friction. Its advanced material composition ensures reliability in demanding environments. Key specifications include product number VLA055030, a sales unit of 1 piece, and an EAN code of 8720193038841.
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€ 89,18
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1-2 weeks delivery time Price incl. 19% VAT The Vesconite Axial Bearing (Product Number: VLA065040) is a high-quality, durable component with a diameter of 65mm and an external diameter of 40mm, designed for efficient performance in various applications. Made from the unique Vesconite material, it measures 10mm in length and is sold as a single piece, bearing the EAN code 8720193038858 and recognized under the Vesconite brand.
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€ 106,22
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1-2 weeks delivery time Price incl. 19% VAT The Vesconite Bearing, with a product number of VLA090050, is designed for superior strength and durability, featuring an inner diameter of 90mm, an outer diameter of 50mm, and a length of 10mm. Made from high-quality Vesconite material, this bearing enhances performance across various applications and is sold individually. It carries an EAN code of 8720193038865 and is proudly branded by Vesconite.
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€ 118,83
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1-2 weeks delivery time Price incl. 19% VAT The Vesconite Bearing, featuring dimensions of Ø52xØ40x40mm, is crafted from high-quality Vesconite material for enhanced durability and performance across various applications. With a product number VLR052040, it is sold individually and boasts an outer diameter of 40 mm, making it a reliable choice for those seeking optimal strength. The bearing is branded under Vesconite and has an EAN code of 8720193038872.
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€ 74,10
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1-2 weeks delivery time Price incl. 19% VAT The R&D Marine Clamping Hub (Product Number: CF165-25) is a robust and reliable component designed for marine applications, accommodating a shaft diameter of 25mm. Made from steel, it features a pitch circle diameter of 82.5mm and is sold as a single piece. This hub ensures optimal performance and is suitable for various installations with a fixed shaft diameter of Ø 25mm. The EAN code for this product is 8720193045481.
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€ 200,64
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1-2 weeks delivery time Price incl. 19% VAT The R&D Marine Clamping Hub, product number CF165-30, is designed for optimal performance and durability in marine applications, accommodating a shaft diameter of 30 mm. Made from high-quality steel, it features a pitch circle diameter of 82.5 mm and is sold as a single piece. The product is identified by the EAN code 8720193045498 and is from the brand R&D Marine.
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€ 200,64
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1-2 weeks delivery time Price incl. 19% VAT The R&D Marine Clamping Hub CF165-35 is a durable and reliable marine product designed for shaft diameters of Ø 35 mm. Constructed from robust steel, it features a pitch circle of 82.5 mm and is sold as a single piece. With its high-quality design, this clamping hub is an ideal choice for various boating needs.
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€ 200,64
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1-2 weeks delivery time Price incl. 19% VAT The R&D Marine Clamping Hub (Product Number: CF165-40) is a key component for secure attachment in marine applications, featuring a durable steel construction with a shaft diameter compatibility of Ø 40mm.
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€ 295,68
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1-2 weeks delivery time Price incl. 19% VAT The R&D Marine Clamping Hub (Product Number: CF171-30) is a vital component for securely attaching marine equipment, featuring a durable steel construction designed for demanding environments. It is compatible with a shaft diameter of 30 mm, has a pitch circle diameter of 107.95 mm, and is sold as a single piece. The product is branded by R&D Marine and has an EAN code of 8720193045528.
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€ 302,28
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1-2 weeks delivery time Price incl. 19% VAT The R&D Marine Clamping Hub, product number CF171-35, is a durable steel component designed for marine applications, providing a reliable connection for a shaft diameter of 35mm. Key features include a pitch circle diameter of 107.95mm and an EAN code of 8720193045535. Sold as a single piece, this high-quality hub is a trusted choice for ensuring performance in marine environments.
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€ 302,28
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1-2 weeks delivery time Price incl. 19% VAT The R&D Marine Clamping Hub, product number CF171-40, is a durable steel coupling designed for marine shafts with a diameter of 40 mm. With a pitch circle of 107.95 mm, this reliable hub ensures a stable connection for optimal performance and is sold as a single piece. It is compatible exclusively with shafts of the same diameter and does not accommodate variable sizes. EAN code: 8720193045542.
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€ 302,28
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1-2 weeks delivery time Price incl. 19% VAT The R&D Marine Clamping Hub (Product Number: CF171-45) is designed for optimal performance with a shaft diameter of Ø 45mm. Made from high-quality steel, it offers durability and reliability for marine applications. The unit of sale is 1 piece, with a pitch circle diameter of 107.95 mm, and it does not accommodate variable shaft diameters. The EAN code for this product is 8720193045559, and it is branded by R&D Marine.
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€ 302,28
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1-2 weeks delivery time Price incl. 19% VAT The R&D Marine Clamping Hub (Product Number: CF171-50) is a essential component for marine applications, providing secure clamping for shafts with a diameter of 50 mm. Made of steel, it features a pitch circle diameter of 107.95 mm, ensuring reliable performance for boat enthusiasts. This product is sold as a single piece and is specifically designed for a shaft diameter of Ø 50 mm.
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€ 302,28
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1-2 weeks delivery time Price incl. 19% VAT The R&D Marine Clamping Hub is a high-quality marine component designed for a 25mm shaft diameter, ensuring a secure connection for your machinery. Made of steel, it features a pitch circle diameter of 78mm and is sold as a single piece. The product number is CF257-25-YANMA, and it is identified by the EAN code 8720193045573. This component is specifically compatible with a 25mm shaft diameter and does not support variable diameters.
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€ 200,64
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1-2 weeks delivery time Price incl. 19% VAT The R&D Marine Clamping Hub is a high-quality component designed for Yanmar engines, ensuring reliable performance and a strong connection between the shaft and engine. With a shaft diameter of 30 mm and a pitch circle diameter of 78 mm, this steel hub (Product Number: CF257-30-YANMA) is sold as a single piece and is not variable in diameter, making it an essential part for any marine setup.
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€ 200,64
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1-2 weeks delivery time Price incl. 19% VAT The R&D Marine Clamping Hub is a durable and high-performance solution for marine applications, specifically designed for Yanmar systems with a shaft diameter of 35 mm. This steel hub (Product Number: CF257-35-YANMA) features a pitch circle diameter of 78 mm and is sold as a single piece. Its EAN code is 8720193045597, and it is not suitable for variable shaft diameters.
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€ 295,68
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1-2 weeks delivery time Price incl. 19% VAT The R&D Marine Clamping Hub is a robust and precisely engineered component essential for reliable shaft connections in marine applications. Designed for a shaft diameter of 40 mm, this steel hub (Product Number: CF257-40-YANMA) features a pitch circle diameter of 78 mm and is sold as a single piece. Its EAN code is 8720193045603, and it is compatible specifically with a shaft diameter of Ø 40 mm.
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€ 295,68
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1-2 weeks delivery time Price incl. 19% VAT The R&D Marine Clamping Hub is a durable and high-quality steel component designed for marine applications, providing a secure fit for shaft diameters of Ø30mm. It has a product number of CF300-30-YANMA, a pitch circle diameter of 100 mm, and is sold as a single piece. The EAN code for this product is 8720193045610, and it is specifically suitable for shafts with a diameter of Ø30 mm.
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€ 302,28
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1-2 weeks delivery time Price incl. 19% VAT The R&D Marine Clamping Hub, designed specifically for Yanmar shaft applications, features a durable construction for reliability in marine environments. It has a shaft diameter of 35 mm, a pitch circle of 100 mm, and is made from steel. Sold as a single piece, its product number is CF300-35-YANMA, and it has an EAN code of 8720193045627.
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€ 302,28
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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