The boat propeller shaft, commonly housed within a stern tube, is a critical component of a boat's propulsion system. The stern tube provides a watertight enclosure for the propeller shaft, allowing it to transmit power from the engine to the propeller while operating smoothly through the water.
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1-2 weeks delivery time The Vetus BG Fiberglass Stern Tube with Cutless Bearings is an essential component for smooth and reliable propulsion in yachts and boats. Made from high-strength fiberglass (G.R.P.), it ensures durability, corrosion resistance, and frictionless shaft operation. Available in various sizes to fit 25, 30, and 35 mm shaft diameters, it is easy to install with molded plastic duct pipes directly integrated into the boat's hull.
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$ 127.29
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1-2 weeks delivery time The Vetus BS Steel Stern Tube is a high-quality steel pipe designed for boat propulsion systems, featuring support bearings and slots that facilitate easy bearing replacement. Available in various diameters and lengths, these stern tubes are engineered to provide durability and efficiency in marine environments. They are ideal for use in yachts and boats, offering a robust solution for shaft mounting. The Vetus BS series is available in multiple sizes to accommodate a wide range of vessels.
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$ 287.59
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1-2 weeks delivery time The Vetus BL Bronze Stern Tube is a high-quality bronze pipe designed for boat propulsion systems, featuring support bearings and slots for easy bearing replacement. Available in various diameters and lengths, this stern tube ensures a secure and reliable shaft mounting solution. The bronze construction offers excellent corrosion resistance, making it ideal for use in marine environments. Whether for new installations or replacements, the Vetus BL Stern Tube is a durable and versatile choice for boat owners and builders.
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$ 547.56
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1-2 weeks delivery time The Vetus FLK Mounting Flange is designed for use with the Vetus Bronze Stern Tubes. It includes a rubber-metal bearing and is installed at the rear part of the stern tube to provide secure and reliable mounting for the shaft. Available in a variety of diameters (from 25mm to 50mm), this mounting flange ensures a stable connection, offering durability and easy installation. Perfect for boat and yacht builders, it provides both strength and flexibility in propulsion system setups.
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$ 80.82
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1-2 weeks delivery time The TOR Marine Brass Stern Tubes are designed for marine propulsion shaft installations, providing durable protection and alignment for propeller shafts. Manufactured from corrosion-resistant brass, the tubes are available for shaft diameters Ø25 mm, Ø30 mm, Ø40 mm, Ø45 mm, and Ø50 mm, with internal diameters ranging from 32 mm to 59 mm and outer diameters from 39 mm to 67 mm. Length options include 1000 mm, 1250 mm, 1500 mm, 1750 mm, and 2000 mm depending on the model. Each stern tube is supplied as a single piece and designed for long-term reliability in marine environments.
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$ 237.73
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1-2 weeks delivery time The Vetus WCAPS Sea Water Cooling Kit is an essential solution for cooling propeller shafts in marine applications. This kit includes a water intake with a ball valve, a 1-meter water hose, and hose clamps, all designed to ensure the optimal cooling of the shaft. It is available in multiple diameters to fit various shaft sizes, providing reliable performance for yachts and boats.
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$ 75.17
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1-2 weeks delivery time The VDM Reya bare propeller shaft bracket is designed for integration into the hull structure and supports shaft diameters from 22 mm to 30 mm. Available in two lengths: 370 mm (for 22–25 mm shafts) and 420 mm (for 25–30 mm shafts). Compatible with SAEBG series bushings depending on configuration. Supplied as a raw unit for structural installation.
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$ 500.39
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1-2 weeks delivery time Upgrade your marine vessel's propulsion system with the VTR Propeller Shaft Bracket, expertly crafted from high-quality bronze. These brackets come complete with bearing grease and offer exceptional versatility, allowing you to adjust them to any angle and height for precise placement. Choose the ideal size from the available options to ensure maximum accuracy and optimize your vessel's performance.
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$ 513.93
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1-2 weeks delivery time The Carco shaft seals are made from NBR and stainless steel and supplied as 1 piece per item. This range covers multiple shaft seal sizes from Ø25 up to Ø140 (ID), with corresponding outer diameters and widths as listed per product number, each identified by its EAN code.
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$ 102.44
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1-2 weeks delivery time The Carco Split Seal is a split-type shaft seal manufactured from NBR (Nitrile Butadiene Rubber) and stainless steel, designed for shaft sealing applications where installation without shaft removal is required. The range covers shaft diameters from Ø25 mm to Ø120 mm, with outer diameters from Ø47 mm to Ø160 mm and widths from 10 mm to 16 mm depending on the size. Each seal is supplied as 1 piece, identified by its Carco product number and EAN code, and specified by dimensions A (shaft diameter) × D (outer diameter) × B (width).
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$ 102.44
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1-2 weeks delivery time The Exalto Propeller Oil Cooling System is designed to provide efficient lubrication for the Exalto propeller shaft. Available in types SA and SV, it features a seal directly on the shaft and must be securely attached below the stern pipe to ensure optimal performance and reliability.
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1-2 weeks delivery time The Exalto Propeller Oil Cooling System with Receiver is a specialized lubrication system designed for the Exalto propeller shaft. It includes receivers of SB and SC types, and the seals are engineered to allow for a small radial clearance, ensuring smooth operation. This system should be installed below the stern pipe in the seal housing to ensure optimal cooling and lubrication.
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How does a stern tube contribute to the overall performance of the boat's propulsion system?
A stern tube plays a crucial role in the overall performance of the boat's propulsion system by housing the propeller shaft and bearing assembly. Located at the aft of the hull, it helps prevent harmful cantilever effects by providing a stable, water-lubricated bearing system, typically made of seawater-resistant brass or steel. The stern tube ensures smooth power transmission from the engine to the propeller, protecting the shaft while maintaining optimal performance through water lubrication and oil circulating systems.
Can a stern tube assembly be adapted for different types of propulsion systems or boat sizes?
Yes, a stern tube assembly can be adapted for different types of propulsion systems and boat sizes. The tube's design allows flexibility, with various options like GRP or stainless steel stern tubes, which are custom-made in-house to meet specific needs. Whether it's a water-lubricated bearing system or a cutlass bearing for different shaft sizes, the stern tube arrangement can be tailored to provide efficient performance, protect the propeller shaft, and reduce harmful cantilever effects, ensuring optimal operation for boats of all sizes.
What are the key differences between water-lubricated bearings and oil-lubricated bearings in stern tubes?
The key difference between water-lubricated bearings and oil-lubricated bearings in stern tubes lies in their lubrication systems. Water-lubricated bearings, commonly used in marine applications, are cooled and lubricated by the surrounding seawater, offering a more environmentally friendly solution. In contrast, oil-lubricated bearings rely on circulating oil for lubrication, which provides better protection against corrosion and wear, particularly in harsh conditions. Both systems are designed to ensure smooth operation of the propeller shaft while reducing friction, but the choice depends on the vessel's specific needs and environmental considerations.
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