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 2-3/4'' lip seal is a nitrile seal suitable for a 2 3/4 inch StrongSeal or rudder. It is produced by SureSeal and has the product number LIP-SEAL-2750.
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€ 115,22
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1-2 weeks delivery time Price incl. 19% VAT The 2-1/4'' lip seal is a nitrile seal designed for a 2 1/4 inch StrongSeal. It is branded by SureSeal, with the product number LIP-SEAL-2250.
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€ 84,20
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1-2 weeks delivery time Price incl. 19% VAT The 2'' lip seal is a nitrile seal made for a SureSeal 2 inch propeller shaft. It is produced by SureSeal and has the product number LIP-SEAL-F-2000.
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€ 85,04
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1-2 weeks delivery time Price incl. 19% VAT The 1-3/8'' - 35mm lip seal is a nitrile seal designed for a StrongSeal 1 3/8 inch propeller shaft or rudder stock. It is branded by SureSeal, with the product number LIP-SEAL-1375.
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€ 58,19
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1-2 weeks delivery time Price incl. 19% VAT The 80mm lip seal is a nitrile seal suitable for a SureSeal or StrongSeal 80 millimeter propeller shaft. It is branded by SureSeal, with the product number LIP-SEAL-80MM.
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€ 115,22
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1-2 weeks delivery time Price incl. 19% VAT The 55mm lip seal is designed for a SureSeal or StrongSeal 55 millimeter propeller shaft or rudder stock. It is produced by SureSeal and has the product number LIP-SEAL-55MM.
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€ 84,20
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1-2 weeks delivery time Price incl. 19% VAT The 50mm lip seal is a nitrile seal compatible with a 50 millimeter StrongSeal or rudder stock. It is branded by SureSeal, and the product number is LIP-SEAL-50MM.
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€ 84,20
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1-2 weeks delivery time Price incl. 19% VAT The 1-3/4'' lip seal is suitable for a SureSeal or StrongSeal 1 3/4 inch propeller shaft or rudder stock. This seal is also branded by SureSeal, with the product number LIP-SEAL-1750.
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€ 72,38
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1-2 weeks delivery time Price incl. 19% VAT The 1-1/2'' lip seal is a nitrile seal designed for use with SureSeal or StrongSeal 1 1/2 inch propeller shafts and rudder stocks. It is branded by SureSeal with the product number LIP-SEAL-1500.
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€ 70,12
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1-2 weeks delivery time Price incl. 19% VAT The 85mm spare seal carrier kit is tailored for a SureSeal or StrongSeal 85 millimeter shaft, featuring two 85MM lip seals and one protective cover that keeps the seals spinning with the shaft while protecting them from dust, oil, and debris. This kit includes LIP SEAL 85MM, KH-85MM-00, and HAT-85MM-02, branded by SureSeal with the product number KM-85MM-00.
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€ 530,32
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1-2 weeks delivery time Price incl. 19% VAT The 80mm spare seal carrier kit is designed for a SureSeal or StrongSeal 80 millimeter shaft, including two 80MM lip seals and one protective cover that ensures the seals spin with the shaft and protects them from dust, oil, and debris. The kit contains LIP SEAL 80MM, KH-80MM-00, and HAT-80MM-02, branded by SureSeal with the product number KM-80MM-00.
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€ 519,98
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1-2 weeks delivery time Price incl. 19% VAT The 60mm spare seal carrier kit is tailored for a SureSeal or StrongSeal 60 millimeter shaft, featuring two 60MM lip seals and one protective cover that keeps the seals spinning with the shaft while protecting them from dust, oil, and debris. This kit includes LIP SEAL 60MM, KH-60MM-00, and HAT-MM60-02, branded by SureSeal with the product number KM-60MM-00.
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€ 348,62
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1-2 weeks delivery time Price incl. 19% VAT The 55mm spare seal carrier kit is designed for a StrongSeal 55 millimeter shaft, including two 55MM lip seals and one protective cover to keep the seals spinning with the shaft and protect them from dust, oil, and debris. The kit contains LIP SEAL 55MM, KH-55MM-00, and HAT-MM55-02, branded by SureSeal with the product number KM-55MM-00.
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€ 320,55
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1-2 weeks delivery time Price incl. 19% VAT The 50mm spare seal carrier kit is suitable for a SureSeal or StrongSeal 50 millimeter shaft, featuring two 50MM lip seals and one protective cover that ensures the seals spin with the shaft while protecting them from dust, oil, and debris. This kit includes LIP SEAL 50MM, KH-50MM-00, and HAT-MM50-02, branded by SureSeal with the product number KM-50MM-00.
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€ 302,87
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1-2 weeks delivery time Price incl. 19% VAT The 45mm spare seal carrier kit is designed for a SureSeal 45 millimeter shaft, including one 45MM lip seal and one protective cover that keeps the seal spinning with the shaft and protects it from damage caused by dust, oil, or debris. The kit contains LIP SEAL F 45MM, KH-45MM-02, and HAT-MM45, branded by SureSeal with the product number KFM-45MM-00.
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€ 261,10
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1-2 weeks delivery time Price incl. 19% VAT The 40mm spare seal carrier kit is tailored for a SureSeal 40 millimeter shaft, featuring one 40MM lip seal and one protective cover to ensure the seal spins with the shaft and is shielded from dust, oil, and falling debris. This kit includes LIP SEAL F 40MM, KH-40MM-00, and HAT-MM40, branded by SureSeal with the product number KFM-40MM-00.
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€ 250,65
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1-2 weeks delivery time Price incl. 19% VAT The 30mm spare seal carrier kit is designed for a SureSeal 30 millimeter shaft, including one 30MM lip seal and one protective cover that keeps the seal spinning with the shaft while protecting it from dust, oil, and debris. The kit contains LIP SEAL F 30MM, KH-30MM-00, and HAT-MM30, branded by SureSeal with the product number KFM-30MM-00.
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€ 140,33
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1-2 weeks delivery time Price incl. 19% VAT The 2-1/4" spare seal carrier kit is designed for SureSeal 2 1/4 inch shafts, including two lip seals and two protective covers that shield the seals from dust and debris. Kit components include LIP SEAL F 2250, KH-2250, and HAT-2250, produced by SureSeal with the product number KF-2250-00.
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€ 337,19
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1-2 weeks delivery time Price incl. 19% VAT The 2" spare seal carrier kit is tailored for SureSeal 2 inch shafts, providing enhanced sealing capabilities with two lip seals and two protective covers that keep the seals spinning with the shaft. Kit components include LIP SEAL F 2000, KH-2000, and HAT-2000, branded by SureSeal with the product number KF-2000-01.
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€ 299,87
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1-2 weeks delivery time Price incl. 19% VAT The 1-3/8" spare seal carrier kit is designed for SureSeal 1 3/8 inch shafts, including one lip seal and one protective cover that keeps the seal rotating with the shaft. Kit components include LIP SEAL F 1375, KH-1375, and HAT-MM35, with a note for specific vessels, produced by SureSeal with the product number KF-1375-00.
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€ 165,61
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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