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 Coupling - Ø127 mm for Shaft Ø30 mm is a durable component made from electro-cadmium steel, designed for precision and reliability. It includes needle screws and keying, features four holes for secure attachment, and has a shaft diameter of Ø30 mm, an outer diameter of 127 mm, and a distance of 108 mm.
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€ 244,57
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1-2 weeks delivery time Price incl. 19% VAT The Coupling - Ø127 mm for Shaft Ø35 mm is a high-quality coupling made from electro-cadmium steel, ensuring optimal performance in various applications. It comes with needle screws and keying, has four holes, a shaft diameter of Ø35 mm, an outer diameter of 127 mm, and a distance of 108 mm.
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€ 244,57
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1-2 weeks delivery time Price incl. 19% VAT The Coupling - Ø127 mm for Shaft Ø40 mm is a reliable coupling constructed with electro-cadmium steel, designed to ensure longevity. It includes needle screws and keying, features four holes for secure fitting, and has a shaft diameter of Ø40 mm, an outer diameter of 127 mm, and a distance of 108 mm.
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€ 244,57
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1-2 weeks delivery time Price incl. 19% VAT The Coupling - Ø80 mm for Shaft Ø22 mm is a compact coupling made from electro-cadmium steel, ideal for tight spaces. It includes needle screws and keying, has four holes for secure attachment, and accommodates a shaft diameter of Ø22 mm, with an outer diameter of 101 mm and a distance of 82 mm.
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€ 235,73
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1-2 weeks delivery time Price incl. 19% VAT The Coupling - Ø80 mm for Shaft Ø25 mm is a sturdy coupling constructed from electro-cadmium steel, designed for efficiency and durability. It includes needle screws and keying, features four holes for secure fitting, and has a shaft diameter of Ø25 mm, an outer diameter of 101 mm, and a distance of 82 mm.
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€ 235,73
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1-2 weeks delivery time Price incl. 19% VAT The Coupling - Ø80 mm for Shaft Ø30 mm is a reliable coupling that features electro-cadmium steel for enhanced performance. It comes with needle screws and keying, has four holes for secure attachment, and accommodates a shaft diameter of Ø30 mm, with an outer diameter of 101 mm and a distance of 82 mm.
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€ 235,73
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1-2 weeks delivery time Price incl. 19% VAT The Coupling - Ø90 mm for Shaft Ø22 mm is a compact coupling made from electro-cadmium steel, suitable for various applications. It includes needle screws and keying, features four holes for secure attachment, and has a shaft diameter of Ø22 mm, with an outer diameter of 100/110 mm and a distance of 80 mm.
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€ 235,73
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1-2 weeks delivery time Price incl. 19% VAT The Coupling - Ø90 mm for Shaft Ø25 mm is an efficient coupling constructed from electro-cadmium steel, ensuring a secure connection. It includes needle screws and keying, has four holes, a female coupling diameter of 60 mm, a shaft diameter of Ø25 mm, an outer diameter of 100/110 mm, and a distance of 80 mm.
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€ 235,73
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1-2 weeks delivery time Price incl. 19% VAT The Coupling - Ø90 mm for Shaft Ø30 mm is designed for high-performance applications, made from electro-cadmium steel. It includes needle screws and keying, features four holes for secure attachment, and accommodates a shaft diameter of Ø30 mm, with an outer diameter of 100/110 mm and a distance of 80 mm.
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€ 235,73
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1-2 weeks delivery time Price incl. 19% VAT The Shaft Seal with Dual Lip Ø 30mm features a flexible inner bearing with a dual lip seal for double security against leaks, filled with silicon grease for effective sealing and can use raw water from a dedicated scoop or the engine exhaust cooling circuit; it is compatible with Vetus 30mm stern tubes and is marked as ZWB30I.
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€ 350,19
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1-2 weeks delivery time Price incl. 19% VAT The Polyester Stern Tube, Length 1500mm is engineered for optimal performance and durability in marine settings. Made from durable fiberglass (G.R.P.), it features Cutless bearings for efficient shaft operation with reduced friction and fits shaft diameters of 40 mm. The plastic duct pipes are molded directly into the boat's hull, ensuring a reliable fit, produced by Vetus under product number BG40/1500.
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€ 266,06
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1-2 weeks delivery time Price incl. 19% VAT The Polyester Stern Tube, Length 1000mm is designed for superior performance and durability in marine applications. Constructed from durable fiberglass (G.R.P.), it enhances strength and corrosion resistance, includes Cutless bearings for smooth operation with reduced friction, and is available for shaft diameters of 40 mm. The plastic duct pipes are molded directly into the boat's hull for a tight, reliable fit, produced by Vetus under product number BG40/1000.
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€ 219,24
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1-2 weeks delivery time Price incl. 19% VAT The Replacement Head for Series One 30mm serves the same purpose as the 25mm version, ensuring that when the lip seal fails, the entire housing must be replaced to maintain functionality.
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€ 283,62
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1-2 weeks delivery time Price incl. 19% VAT The Replacement Head for Series One 25mm is necessary when the lip seal wears out and leaks, requiring the entire shaft seal housing to be replaced, as the original lip seal is not replaceable.
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€ 248,17
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1-2 weeks delivery time Price incl. 19% VAT The Replacement Head for Series One 22mm is essential for replacing a worn lip seal, as the original seal is not replaceable; this head is designed to replace the entire housing when leakage occurs.
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€ 248,17
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1-2 weeks delivery time Price incl. 19% VAT The Water Pick-Up Kit Ø32mm - 1-1/4'' includes essential components for optimal water pick-up performance, featuring a brass tee fitting, 8 feet of injection hose, and the necessary clamps for secure installation.
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€ 128,52
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1-2 weeks delivery time Price incl. 19% VAT The Ø25mm - 1'' Water Pick-Up Kit is designed for efficient water intake, featuring a brass tee fitting, 8 feet of injection hose, and clamps to ensure secure connections.
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€ 94,54
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1-2 weeks delivery time Price incl. 19% VAT The 3/4'' Ø19mm Water Pick-Up Kit contains all necessary components for effective water intake, including a brass tee fitting, 8 feet of injection hose, and clamps for secure connections.
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€ 94,54
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1-2 weeks delivery time Price incl. 19% VAT This Seriesone Shaft Seal Kit provides a robust, drip-free solution for 30 millimeter propeller shafts, designed for optimal efficiency and performance. It includes ONE-A-30M, a convoluted hose, four clamps, and a Hat-MM30, with a minimum distance of 178 millimeters required from the stern tube end to the coupling, and a water feed of at least 1 gallon per minute at idle, maintaining a minimum pressure of 2 psi. Brand: SureSeal, Product Number: ONE-30M-76.
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€ 322,40
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1-2 weeks delivery time Price incl. 19% VAT The Seriesone Shaft Seal Kit ensures a reliable, drip-free operation for 30 millimeter propeller shafts, perfect for high-performance applications. It includes ONE-A-30M, a convoluted hose, four clamps, and a Hat-MM30, requiring a minimum distance of 178 millimeters from the stern tube end to the coupling, and a water feed of at least 1 gallon per minute at idle, maintaining a minimum pressure of 2 psi. Brand: SureSeal, Product Number: ONE-30M-70.
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€ 322,40
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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