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 R&D Marine Clamping Hub is a high-quality steel component designed for marine applications, providing reliable performance for boats with Yanmar engines. With a diameter of 40 mm and a pitch circle diameter of 100 mm, it is sold as a single piece (Product Number: CF300-40-YANMA) and is not variable in shaft diameter. The product's EAN code is 8720193045634, and it is specifically compatible with shafts of Ø 40 mm.
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€ 398,64
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1-2 weeks delivery time Price incl. 19% VAT The R&D Marine Clamping Hub is a durable and reliable component specifically designed for Yanmar engines, featuring a 45mm diameter and made of steel. It has a product number CF300-45-YANMA, a pitch circle of 100mm, and is sold as a single piece. This hub is compatible with a shaft diameter of Ø 45 and has an EAN code of 8720193045641.
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€ 398,64
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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 made from durable steel, designed for shaft diameters of Ø50mm. It features a product number CF300-50-YANMA, a pitch circle diameter of 100 mm, and is sold as a single piece. Compatible specifically with Ø50 mm shaft diameters, this hub ensures reliable connections for marine setups and comes branded by R&D Marine, with EAN code 8720193045658.
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€ 398,64
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1-2 weeks delivery time Price incl. 19% VAT The Rameh Propeller Shaft Gasket (Product Number: 66460070) is a durable and reliable gasket made from vegetable fibers, specifically designed for maritime applications such as pumps, stirrers, and mixers. With a width and height of 12.5 mm and compatible with a shaft diameter of 70 mm, this red gasket exhibits excellent sealing capabilities for liquids containing solid particles and resists rot from prolonged water exposure. It offers a very good price-performance ratio and is suitable for industries like paper and pulp, shipping, wastewater, and chemicals. The gasket is constructed from Ramie fibers lubricated for enhanced performance, supporting pump operations up to 16 bar and a speed of 10 m/s.
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€ 15,25
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1-2 weeks delivery time Price incl. 19% VAT The Rameh Propeller Shaft Gasket, measuring 5x5mm and available in a 32-meter length, is a durable and reliable product made from vegetable fibers, specifically designed for pumps, propellers, and mixers in the maritime industry. Suitable for various applications such as the paper and pulp, shipping, and chemical industries, it offers excellent performance in low-temperature environments. The gasket is woven from Ramie fibers with a high-quality lubricant, effectively sealing liquids with solid particles and maintaining structural integrity even with prolonged water exposure. With a product number of 66410.001 and a hardness recommendation of 45 HRC for the shaft, it can withstand pump pressures of 16 bar and speeds of up to 10 m/s.
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€ 3,84
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1-2 weeks delivery time Price incl. 19% VAT The Rameh Propeller Shaft Gasket (6x6mm, 21.3m) is a durable, vegetable fiber gasket designed for use in the maritime industry, particularly in pumps, rudders, and mixers. It is suitable for applications in the paper and pulp, shipping, and wastewater industries, as well as recommended for use in the chemical industry. With an excellent cost-performance ratio, this universal gasket is effective in sealing liquids with solid particles and can withstand prolonged exposure to water without rotting. Constructed from Ramie fibers and featuring a high-quality lubricant, it can handle operational pressures of up to 16 bar and speeds of 10 m/s, making it a reliable choice for low-temperature applications.
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Our managers will contact you and clarify the terms of the order
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1-2 weeks delivery time Price incl. 19% VAT The Rameh Propeller Shaft Gasket (Product Number: 66430030) is a durable gasket made from vegetable fibers, designed for various maritime applications such as pumps, agitators, and mixers. It features a red color, an excellent price-performance ratio, and is resistant to rot from water exposure. Suitable for industries including paper and pulp, shipping, and chemicals, it can handle pressures of up to 16 bar and speeds of 10 m/s. The gasket is woven from Ramie fibers and treated with high-quality lubricant, making it effective for sealing liquids containing solid particles.
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€ 7,85
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1-2 weeks delivery time Price incl. 19% VAT The Rameh Propeller Shaft Gasket is a durable and reliable gasket made from plant-based fibers, designed for pumps, agitators, and mixers in the maritime industry. With a red color and equivalent types including BPG 4510 and James Walker, it is suitable for various applications such as the paper and pulp industry, shipping, and chemical processing. This universal gasket offers excellent sealing capabilities, even for fluids containing solid particles, and is resistant to rot from prolonged water exposure. Engineered from Ramie fibers infused with lubricant, it can handle pressures up to 16 bar and speeds of 10 m/s, making it an effective solution for low temperature operations.
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Our managers will contact you and clarify the terms of the order
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1-2 weeks delivery time Price incl. 19% VAT The Rameh Propeller Shaft Gasket SP22 (Product Number: 66500.001) is a versatile and reliable gasket made from plant fibers, specifically designed for pumps, agitators, and mixers in the maritime industry. It is suitable for various applications, including the paper and pulp industry, shipping, wastewater, and water treatment, and is particularly recommended for the chemical industry. This universal gasket performs well in low-temperature environments, resists rotting from prolonged water exposure, and effectively seals liquids containing solid particles. Constructed from woven Ramie fibers and coated with a high-quality lubricant, it can withstand pump pressures of up to 16 bar and speeds up to 10 m/s. Its equivalents include several product types from well-known manufacturers.
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€ 59,45
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1-2 weeks delivery time Price incl. 19% VAT The Rameh Propeller Shaft Gasket, measuring 12.5x12.5mm and sold in lengths of 15.4 meters, is a durable packing made from plant fibers, ideal for pumps, steering devices, and mixers in the maritime industry. It is suitable for various applications, including the paper and pulp industry, shipping, and wastewater treatment. With a hardness of 45 HRC recommended for the shaft, this gasket offers excellent sealing capabilities for fluids containing solid particles and does not rot from water exposure. It features a high-quality lubricant and provides a good price-quality ratio, making it a reliable choice for low-temperature applications.
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Our managers will contact you and clarify the terms of the order
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1-2 weeks delivery time Price incl. 19% VAT The Rameh Propeller Shaft Gasket (14x14mm, 12.2m) is a versatile red gasket made from vegetable fibers, designed for pumps, rudders, and mixers in the maritime industry and is suitable for various applications including the paper, pulp, wastewater, and chemical industries. It features excellent durability and sealing capabilities, with a hardness recommendation of 45 HRC for the shaft. The gasket is woven from Ramie fibers, maintains integrity under water exposure, and has an impressive price-performance ratio.
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€ 24,82
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1-2 weeks delivery time Price incl. 19% VAT The Rameh Propeller Shaft Gasket is a versatile 16x16mm gasket made from durable plant fibers, ideal for pumps, rudders, and mixers in the maritime industry. With a product number of 66480.001, it features a red color and is compatible with various models such as BPG 4510 and James Walker. This gasket is suitable for use in the paper and pulp industry, shipping, wastewater, and water treatment, and is recommended for chemical applications. It offers excellent performance with a maximum pressure of 16 bar and a speed of up to 10 m/s, and does not rot when exposed to water. The product comes in a length of 9.3 meters and has a high cost-performance ratio, making it an effective choice for sealing liquids containing solid particles.
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€ 32,65
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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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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