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 Propeller Shaft EVO, designed for marine applications, features a 35 mm size with a rubber transmission for metric propeller shafts, ensuring enhanced sealing and lubrication for reliability and durability. It replaces traditional braid products and has a compact design suitable for small spaces. Key specifications include a minimum support frame length of 38 mm, recommended grease application every 200 hours, and a replacement interval of every 4 years or 500 hours. The kit includes essential components such as a protection ring, stainless steel strap, rubber coupling, grease tube, brass cap, and assembly instructions.
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€ 74,50
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1-2 weeks delivery time Price incl. 19% VAT The Propeller Shaft EVO Version 40 mm is engineered for optimal performance in marine environments, featuring a compact design suitable for tight spaces. With a product number of 2728540, it utilizes rubber transmission material and replaces traditional braid prizes. Key specifications include a diameter of 40 mm, a minimum support frame length of 38 mm, and a recommended grease application every 200 hours. The kit comes with essential components, including a plastic protection ring, stainless steel strap, "EVO" rubber coupling, grease tube, brass cap, and hydrolubrication nozzle, along with assembly instructions. It is advised to replace the shaft after four years or 500 hours.
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€ 81,75
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1-2 weeks delivery time Price incl. 19% VAT The Propeller Shaft EVO Version 45 mm is a high-quality, compact product designed for efficient performance and durability, featuring an innovative rubber transmission system that ensures optimal sealing and lubrication. It has a minimum support frame length of 38 mm, requires grease application every 200 hours, and should be replaced after 4 years or 500 hours of use. The kit includes essential components like a plastic protection ring, stainless steel strap, "evo" rubber coupling, grease tube, brass cap, brass nozzle for hydrolubrication, and assembly instructions.
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€ 88,44
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1-2 weeks delivery time Price incl. 19% VAT The Propeller Shaft EVO Version 50 mm is a high-performance marine product designed for optimal sealing and lubrication, featuring a compact design for easy installation in confined spaces. Engineered from rubber transmission material, it replaces traditional braid options to enhance efficiency. Key details include a FNI product number of 2728550, a diameter of 50 mm, a minimum support frame length of 38 mm, and a grease application recommendation every 200 hours. The kit contains essential components such as a plastic protection ring, stainless steel strap, EVO rubber coupling, grease tube, brass cap, brass nozzle for hydrolubrication, and assembly instructions. Regular maintenance is advised every 4 years or 500 hours of use.
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€ 93,79
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1-2 weeks delivery time Price incl. 19% VAT The Fiberglass Stern Tube is a durable component designed for propeller shaft applications, featuring a 25 mm shaft diameter, made from fiberglass (GRP), and measuring 1200 mm in length, making it ideal for marine environments.
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€ 103,56
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1-2 weeks delivery time Price incl. 19% VAT The Fiberglass Stern Tube (FNI 2728730) is designed for propeller shaft cases with a diameter of 30 mm and a length of 1200 mm, ensuring durability and efficiency in marine applications.
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€ 122,50
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1-2 weeks delivery time Price incl. 19% VAT The Fiberglass Stern Tube is a durable 1200 mm long fiberglass (GRP) tube designed for propeller shaft applications, accommodating a shaft diameter of 40 mm and providing reliable support for marine setups.
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€ 132,70
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1-2 weeks delivery time Price incl. 19% VAT The Fiberglass Stern Tube is a durable component designed for propeller shaft applications, measuring 1200 mm in length and compatible with 45 mm shafts. Made from fiberglass (GRP), it ensures reliable performance in marine environments.
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€ 148,19
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1-2 weeks delivery time Price incl. 19% VAT The Fiberglass Stern Tube is a durable and efficient component designed for marine applications, providing reliable support for propeller shafts with its robust fiberglass (GRP) construction and a length of 1200 mm, suitable for 50 mm shaft diameters.
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€ 173,54
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1-2 weeks delivery time Price incl. 19% VAT The Hose Fitting for Propeller Shaft 2728910 FNI is a durable and corrosion-resistant replacement part designed for optimal performance and safety in your boat's propeller system, ensuring a secure connection and easy installation for various models.
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€ 3,84
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1-2 weeks delivery time Price incl. 19% VAT The Cap for Propeller Shaft, with product number 2728911 FNI, is a durable replacement designed to ensure optimal performance and longevity for your vessel. Its perfect fit allows for hassle-free installation and enhances overall efficiency in various marine applications.
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€ 1,57
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1-2 weeks delivery time Price incl. 19% VAT The Grease For Propeller Shaft 2728912 FNI is specially formulated for marine applications, providing optimal lubrication and protection. It reduces friction and wear, offers excellent water resistance, and is compatible with various propeller shaft materials, ensuring smooth operation and prolonging component life.
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€ 7,02
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1-2 weeks delivery time Price incl. 19% VAT The Brass Shaft Bearing Universal Series, featuring a 25 mm size and product number 2732025 FNI, is made of brass and rubber. Its hydro-lubricated design ensures reliable performance, with internal dimensions in metric and external dimensions in inches, making it suitable for various applications.
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€ 42,70
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1-2 weeks delivery time Price incl. 19% VAT The Brass Shaft Bearing Universal Series is designed for optimal performance with a robust construction that ensures longevity and reliability. It features a hydro-lubricated design made from brass and rubber, with an internal diameter of 30 mm (metric) and an external diameter available in inches, making it an excellent choice for various industrial and commercial applications.
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€ 50,53
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1-2 weeks delivery time Price incl. 19% VAT The Brass Shaft Bearing Universal Series features a hydro-lubricated design made from brass and rubber, providing durability and versatility. It has an internal diameter of 35 mm and an external diameter available in inches, making it suitable for various applications.
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€ 61,48
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1-2 weeks delivery time Price incl. 19% VAT The Brass Shaft Bearing Universal Series is a hydro-lubricated bearing made from brass and rubber, featuring a 40 mm diameter. It has a metric internal diameter and an external diameter measured in inches, ensuring durability and reliable performance in various applications.
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€ 68,45
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1-2 weeks delivery time Price incl. 19% VAT The Brass Shaft Bearing Universal Series, with product number 2732045 FNI, features a 45 mm size and is designed as a hydro-lubricated shaft bearing made from brass and rubber, ensuring reliable performance with a metric internal diameter and an external diameter in inches.
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€ 94,60
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1-2 weeks delivery time Price incl. 19% VAT The Brass Shaft Bearing Universal Series is a hydro-lubricated bearing made from brass and rubber, designed for versatile applications with an internal diameter of 50 mm, ensuring durability and reliable performance.
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€ 128,62
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1-2 weeks delivery time Price incl. 19% VAT The Brass Shaft Bearing Universal Series, with FNI product number 2732060, is a 60 mm hydro-lubricated shaft bearing made from brass and rubber. It features an internal diameter in metric and an external diameter in inches, ensuring reliable support and efficient operation in various applications.
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€ 196,45
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1-2 weeks delivery time Price incl. 19% VAT The Brass Shaft Bearing Universal Series is a durable and effective solution for various applications, featuring a hydro-lubricated design. Constructed from high-quality brass and rubber, it offers a 90 mm internal diameter and is suitable for diverse uses, with external dimensions available in inches.
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€ 517,37
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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