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 Vetus KO54, known as Type 6, represents a flexible coupling designed for optimal performance in marine applications. Its unique conical clamping hub ensures 100% concentric assembly, resulting in significant time savings during installation. The coupling comes with pre-drilled Ø 20 mm holes or a cylindrical bore with a keyway, suitable for shafts with Ø 25, 30, or 35 mm. Compatible with 4" and 5" connectors, it fits models like Hurth, Velvet, TD, ZF, PRM, and more. Choose the Vetus KO54 for a reliable and efficient solution, providing flexibility and precision in various marine systems.
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€ 365
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1-2 weeks delivery time Price incl. 19% VAT The Vetus UNIFL1320 Flexible Coupling Uniflex 13 Shaft 20mm provides an effective solution for aligning and concentrically mounting a boat's propeller shaft, offering the added advantage of compensating for shaft misalignment with the reverse gear by up to 2º while centering the shaft on the reversing gear. With axial and radial security against breakdown, this coupling is ideal for propeller shaft systems with freely suspended bottom brackets and engines on flexible mounts, ensuring optimal performance and longevity.
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€ 477,50
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1-2 weeks delivery time Price incl. 19% VAT The Vetus UNIFL1325 Flexible Coupling Uniflex 13 Shaft 25mm provides a reliable solution for aligning and concentrically mounting a boat's propeller shaft. With the ability to compensate for shaft misalignment by up to 2º and centering the shaft on the reversing gear, this coupling ensures optimal performance and durability. Its specifications include a height of 98mm, diameter of 130mm, and shaft diameter of 25mm, making it suitable for various marine applications where flexibility and reliability are essential.
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€ 642
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1-2 weeks delivery time Price incl. 19% VAT Vetus UNIFL1330 is a reliable and durable flexible coupling designed to facilitate the alignment and concentric mounting of a boat's propeller shaft, offering an effective solution to the challenging task. With the ability to compensate for shaft misalignment of up to 2º, this coupling ensures optimal performance and smooth operation, making it an ideal choice for marine propulsion systems requiring flexibility and precision.
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€ 642
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1-2 weeks delivery time Price incl. 19% VAT Vetus UNIFL1630 is a robust and adaptable flexible coupling designed to solve the challenges of aligning and concentrically mounting a boat's propeller shaft. With the ability to compensate for shaft misalignment and securely center the shaft to the gearbox, it ensures smooth and efficient operation, making it an ideal choice for marine propulsion systems.Vetus UNIFL1630 is a robust and adaptable flexible coupling designed to solve the challenges of aligning and concentrically mounting a boat's propeller shaft. With the ability to compensate for shaft misalignment and securely center the shaft to the gearbox, it ensures smooth and efficient operation, making it an ideal choice for marine propulsion systems.
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€ 991
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1-2 weeks delivery time Price incl. 19% VAT Experience seamless alignment and mounting of your boat's propeller shaft with the Vetus UNIFL1635 Flexible Coupling. Engineered to accommodate misalignments of up to 2°, this coupling ensures optimal performance even in challenging conditions. With its robust construction and precise centering ability, it's the ideal choice for propeller shaft systems requiring flexibility and reliability.
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€ 991
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1-2 weeks delivery time Price incl. 19% VAT Experience seamless alignment and mounting of your boat's propeller shaft with the Vetus UNIFL1640 Flexible Coupling UNIFLEX 16. Designed to address the challenges of aligning and concentrically mounting propeller shafts, this coupling provides up to 2º of compensation for shaft misalignment with the reverse gear. With axial and radial security against breakdown, it ensures reliable performance, making it an ideal choice for propeller shaft systems. The UNIFLEX coupling's ability to center the shaft to the gearbox enhances its flexibility, offering a versatile solution for various marine applications.
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€ 991
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1-2 weeks delivery time Price incl. 19% VAT The Vetus SET64 Set of Bolts is a crucial component to enhance the reliability of your coupling system, specifically designed for coupling type 6 and compatible with a 4" flange. These bolts ensure a secure and efficient assembly, providing a dependable connection for various marine applications. Upgrade your coupling system with confidence, trusting in the precision engineering of Vetus products to ensure longevity and performance in maritime environments. The SET64 Set of Bolts offers a tailored solution, ensuring a secure and dependable connection for coupling type 6 and a 4" flange, contributing to the efficiency of your marine systems.
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€ 15,50
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1-2 weeks delivery time Price incl. 19% VAT The Vetus SET65 Set of Bolts is a crucial component for ensuring the secure assembly of your coupling system, specifically tailored for coupling type 6 and designed for a 5" flange. This set of bolts guarantees an efficient and reliable coupling process, providing essential components for the assembly of your marine systems. Trust in the precision engineering of Vetus products to enhance the reliability and performance of your coupling systems. Elevate the integrity of your marine equipment confidently with the Vetus SET65, offering a set of bolts crafted for coupling type 6 and a 5" flange, ensuring a secure and dependable connection for your marine applications.
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€ 31,50
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1-2 weeks delivery time Price incl. 19% VAT Enhance the reliability of your UNIFLEX 12/13/16 and BULLFLEX 1-8 couplings with the Vetus UNISET4/5 Set Studs & Bolts (M10), specially crafted for 4”/5” flanges, ensuring secure installation and optimal performance.
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€ 25
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1-2 weeks delivery time Price incl. 19% VAT The Vetus BULFL011 Bullflex 1 Type Coupling is a flexible coupling designed for optimal vibration damping, ensuring enhanced driving comfort. Featuring a super-elastic rubber element, it efficiently absorbs torsional vibrations caused by load changes and uneven engine running at low speeds. The prestressed rubber element establishes a backlash-free and vibration-damping connection between the motor and the propeller shaft, providing noiseless operation. With puncture protection (axial and radial), it guarantees an optimal and reliable connection. The coupling's advantages include high flexibility, excellent vibration damping, and a deviation tolerance of 2º. Additionally, it allows for a high number of revolutions, maintains shaft centering during reversing, and offers easy assembly and disassembly without a conical clamping hub. The model specifications include various connection sizes and compatibility with different transmissions, excluding V-drives.
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€ 470,50
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1-2 weeks delivery time Price incl. 19% VAT The Vetus BULFL021, a Bullflex 2 Type Coupling designed for a propeller shaft with a diameter of 1 inch, offers optimal vibration dampening for enhanced driving comfort. With a super-elastic rubber element, it efficiently mitigates torsional vibrations caused by load changes or uneven engine running. The coupling ensures a noiseless and vibration-damping connection between the motor and the propeller shaft, allowing a high number of revolutions and maintaining centered alignment even during reversing. Puncture protection, flexibility, and easy assembly make the Bullflex 2 an excellent choice for a smoother boating experience.
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€ 483,50
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1-2 weeks delivery time Price incl. 19% VAT The Vetus BULFL041 Bullflex 4 Type Coupling offers an innovative solution for enhanced driving comfort by efficiently dampening torsional vibrations. Designed with a super-elastic rubber element, this coupling ensures a noiseless and vibration-damping connection between the motor and propeller shaft. With features like puncture protection, flexibility, and the ability to tolerate deviations of up to 2º, it excels in providing optimal performance. Additionally, the built-in dynamic pressure bearing and easy (dis)assembly without a conical clamping hub contribute to its versatility. Suitable for various models with different connection sizes, the Bullflex coupling is a reliable choice for marine applications, offering high flexibility, vibration damping, and easy installation.
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€ 582,50
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1-2 weeks delivery time Price incl. 19% VAT The Vetus BULFL0814 Bullflex 8 Type Coupling stands at the forefront of driving comfort, offering optimal vibration dampening for marine applications. Specifically crafted to efficiently mitigate torsional vibrations arising from load changes or unevenly running engines, this coupling features a super-elastic rubber element with puncture protection, ensuring a noiseless and vibration-damping connection between the motor and the 1 ¼" propeller shaft. Boasting high flexibility, excellent vibration damping, and the ability to tolerate a 2º deviation, the Bullflex coupling provides a reliable and high-performance solution. Additional advantages include exceptional shaft centering, even during reversing, a removable centering ring, and a built-in dynamic pressure bearing. With a design omitting a conical clamping hub, this coupling facilitates perfect centering and easy assembly/disassembly. Suitable for various connection sizes, the Bullflex 8 Type Coupling is a versatile choice for marine propulsion systems.
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€ 991
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1-2 weeks delivery time Price incl. 19% VAT The Vetus BULFL0812 Bullflex 8 Type Coupling epitomizes driving comfort with its advanced design tailored for optimal vibration dampening. Specifically engineered to efficiently counter torsional vibrations, especially during load changes or uneven engine operation at low speeds, this coupling boasts a super-elastic rubber element and puncture protection for a noiseless and vibration-damping connection between the motor and the 1 ½" propeller shaft. Offering remarkable flexibility, superior vibration damping, and the ability to tolerate a 2º deviation, it stands out as a reliable and high-performance solution. Notable features include excellent shaft centering, even during reversing, a removable centering ring, and a built-in dynamic pressure bearing. With no conical clamping hub, the Bullflex ensures perfect centering and easy assembly/disassembly. The coupling comes in various models, accommodating different connection sizes and configurations, making it a versatile choice for marine applications.
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€ 991
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1-2 weeks delivery time Price incl. 19% VAT The Vetus BULFL1212 Bullflex 12 Type Coupling represents a pinnacle in driving comfort, meticulously engineered to optimize vibration dampening for marine applications. Crafted with a super-elastic rubber element and puncture protection, this coupling ensures a noiseless and vibration-damping connection between the motor and the 1 ½" propeller shaft, efficiently mitigating torsional vibrations induced by load changes or uneven engine operation, especially at low speeds. Boasting exceptional flexibility, superior vibration damping, and a 2º deviation tolerance, the Bullflex offers a reliable, high-performance solution. Notable features include reliable shaft centering, even during reversing, a removable centering ring, and a built-in dynamic pressure bearing. With no conical clamping hub, the Bullflex facilitates perfect centering and easy assembly/disassembly. Suited for various connection sizes, the Bullflex 12 Type Coupling stands as a versatile choice for marine propulsion systems.
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€ 1.351,50
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1-2 weeks delivery time Price incl. 19% VAT The Vetus BULFL1213 Bullflex 12 Type Coupling redefines driving comfort in marine applications, offering optimal vibration dampening for a superior boating experience. Tailored for the demanding needs of the sea, this coupling efficiently mitigates torsional vibrations induced by load changes or uneven engine operation, especially at low speeds. With a robust design featuring a super-elastic rubber element and puncture protection (axial and radial), it ensures a noiseless and vibration-damping connection between the motor and the substantial 1 ¾" propeller shaft. Boasting remarkable flexibility, exceptional vibration damping, and the capacity to tolerate a 2º deviation, the Bullflex coupling stands out as a reliable, high-performance solution. Key advantages include impeccable shaft centering, even during reversing, a removable centering ring, and a built-in dynamic pressure bearing. The absence of a conical clamping hub simplifies perfect centering and facilitates easy assembly/disassembly. Suitable for various connection sizes, the Bullflex 12 Type Coupling is a versatile choice for marine propulsion systems, providing unparalleled reliability and comfort on the water.
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€ 1.351,50
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1-2 weeks delivery time Price incl. 19% VAT The Vetus BULFL1612 Bullflex 16 Type Coupling exemplifies VETUS' commitment to elevated driving comfort in marine applications. Specifically engineered for optimal vibration dampening, this coupling effectively mitigates torsional vibrations induced by load changes or unevenly running engines, particularly at low speeds. Its super-elastic rubber element, fortified with puncture protection (axial and radial), establishes a backlash-free, noiseless, and vibration-damping connection between the motor and the 1 ½" propeller shaft. With exceptional flexibility, superior vibration damping, and the ability to tolerate a 2º deviation, the Bullflex 16 offers a reliable and high-performance solution. Notable features include impeccable shaft centering, even during reversing, a removable centering ring, and a built-in dynamic pressure bearing. Models 8, 12, and 16 feature both 4" and 5" connections, catering to diverse marine transmission systems. Additionally, the absence of a conical clamping hub streamlines perfect centering and facilitates easy assembly/disassembly, making it an ideal choice for marine propulsion systems.
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€ 1.487
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1-2 weeks delivery time Price incl. 19% VAT The Vetus BULFL1613, part of the Bullflex series, exemplifies VETUS' commitment to superior marine propulsion solutions, catering specifically to propeller shafts with a diameter of 1 ¾". This flexible coupling stands out for its optimal vibration dampening capabilities, effectively addressing torsional vibrations associated with load changes and uneven engine running, particularly at low speeds. With a super-elastic rubber element featuring puncture protection, the Bullflex ensures a noiseless, backlash-free, and vibration-damping connection between the motor and the propeller shaft. Boasting advantages such as exceptional flexibility, optimum vibration damping, and protection against puncture, this coupling allows for a deviation of up to 2º, maintaining excellent shaft centering and facilitating high revolutions even with deviations. The Bullflex 16 remains centered during reversing, and its removable centering ring, coupled with a built-in dynamic pressure bearing, ensures easy assembly and disassembly. With different connection types for various transmissions, the Vetus BULFL1613 is a hallmark of driving comfort, flexibility, and reliability in marine applications.
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€ 1.487
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1-2 weeks delivery time Price incl. 19% VAT The Vetus BULFL162, belonging to the Bullflex series, exemplifies VETUS' commitment to driving comfort and optimal vibration dampening for propeller shafts with a 2" diameter. Specially designed to address torsional vibrations resulting from load changes or uneven engine running, especially at low speeds, the Bullflex coupling features a super-elastic rubber element with puncture protection, ensuring a backlash-free, noiseless, and vibration-damping connection between the motor and the propeller shaft. Its notable advantages include exceptional flexibility, optimum vibration damping, and protection against puncture. With a permissible deviation of 2º, the coupling maintains excellent shaft centering, allowing for high revolutions even with deviations. During reversing, the shaft remains centered, and the removable centering ring, coupled with a built-in dynamic pressure bearing, facilitates easy assembly and disassembly. The Bullflex 16 offers various connection types for different transmissions, ensuring compatibility and making it a reliable choice for marine propulsion solutions.
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€ 1.487
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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