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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.
1-2 weeks delivery time Price incl. 19% VAT The CV joint in the Python-Drive kit P200-T for shafts with a diameter of 40 to 60 mm, a maximum torque of 200 Kgm (1960 Nm), a maximum stop of 18 kN. For 250 hp (2400 RPM) engines with a 2.5: 1 gearbox. Coupling diameter 148 mm, coupling length 225 mm (choice)
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1-2 weeks delivery time Price incl. 19% VAT CENTAFLEX-AM is based on the world-famous CENTAFLEX classic clutch, designed specifically for yachts and small commercial vessels. It was retrofitted with an additional rubber thrust bearing for additional thrust force on the propeller. 11 sizes cover the power range of the entire typical series. CENTAFLEX-AM is very flexible and has proven itself reliably on motor boats, large yachts and ferries. Rotating moments 175-14.000 Nm.
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1-2 weeks delivery time Price incl. 19% VAT The CV joint in the Python-Drive kit P140-T for shafts with a diameter of 40 to 55 mm, a maximum torque of 140 Kgm (1370 Nm), a maximum stop of 18 kN. For 160 hp (2500 RPM) engines with a 3:1 gearbox. Coupling diameter 128 mm, coupling length 180 or 225 mm (choice)
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1-2 weeks delivery time Price incl. 19% VAT Aquadrive CVB21.10 for shafts 20, 25, 30, 35 and 40 mm, coupling diameter 128 mm
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1-2 weeks delivery time Price incl. 19% VAT Steel stern pipe with support bearings. Slots in the pipe are made to facilitate bearing replacement. The shaft diameter and length of the stern tube are specified.
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€ 232,85
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1-2 weeks delivery time Price incl. 19% VAT The CENTAFLEX Centa M Elastic Coupling is specifically designed for flexible coupling applications, particularly in yachts where vibration attenuation is crucial. It is available in two sizes, catering to a range of power requirements from 40 hp to 80 hp (depending on the propeller shaft's speed). Thousands of these reliable couplings have been in operation for decades on motor boats and sailing yachts, ensuring smooth and efficient power transmission.
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1-2 weeks delivery time Price incl. 19% VAT The CV joint in the Python-Drive kit P80-S for shafts with a diameter of 30 to 45 mm, a maximum torque of 80 Kgm (785 Nm), a maximum stop of 12 kN. For 135 hp (2500 RPM) engines with a 2:1 gearbox. Coupling diameter 100 mm, coupling length 145, 165 or 195 mm (choice)
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1-2 weeks delivery time Price incl. 19% VAT Aquadrive CVB05.10 for shafts 20, 25, 30, 35 and 40 mm, coupling diameter 86 mm
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1-2 weeks delivery time Price incl. 19% VAT The CV joint in the Python-Drive kit P110-S for shafts with a diameter of 35 to 45 mm, a maximum torque of 110 Kgm (1080 Nm), a maximum stop of 12 kN. For 135 hp (2800 RPM) engines with a 3:1 gearbox. Coupling diameter 108 mm, coupling length 180 or 225 mm (choice)
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1-2 weeks delivery time Price incl. 19% VAT The Tides Marine SeriesOne duct seal can be used with lubrication during installation. The cardan shaft is made of a high quality composite material that does not absorb water and is resistant to temperature changes. These seals will allow any movement of the axle, thanks to their flexibility. The Tides Marine SeriesOne is available for 25 mm and 30 mm shafts. Other sizes are available on request.
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€ 304,30
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1-2 weeks delivery time Price incl. 19% VAT Aquadrive CVB30.30 for shafts 40, 45, 50, 55, 60 and 65 mm, coupling diameter 148 mm, maximum stop 9 kN
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1-2 weeks delivery time Price incl. 19% VAT Essential stern gland sealing solution, designed specifically for marine applications. Crafted from 100% pure, asbestos-free Rameh fibres, this packing seal ensures optimum performance and longevity. It's lightly lubricated with premium-quality grease using the established Diaplex method. Rameh's inherent properties make it stand out: it retains elasticity, is straightforward to install, possesses solid volume, offers minimal friction, and promises an extended lifespan. Sold by the meter, with the length of the side of the square in the section being indicated as size A.
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€ 13,66
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1-2 weeks delivery time Price incl. 19% VAT Aquadrive CVB43.30 for shafts 40, 45, 50, 55, 60 and 65 mm, coupling diameter 192 mm, maximum stop 9 kN
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1-2 weeks delivery time Price incl. 19% VAT Aquadrive HDL60.780, coupling diameter 275 mm
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1-2 weeks delivery time Price incl. 19% VAT The CV joint in the Python-Drive kit P501-Q for shafts with a diameter of 55 to 60 mm, a maximum torque of 500 Kgm (4900 Nm), a maximum stop of 22 kN. For 430 hp (2300 RPM) engines with a 2.5: 1 gearbox. Coupling diameter 198.1 mm, coupling length 221 mm
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1-2 weeks delivery time Price incl. 19% VAT The CV joint in the Python-Drive kit P200-Q for shafts with a diameter of 45 to 60 mm, a maximum torque of 200 Kgm (1960 Nm), a maximum stop of 22 kN. For 200 hp (2200 RPM) engines with a 3:1 gearbox. Coupling diameter 148 mm, coupling length 225 mm (choice)
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1-2 weeks delivery time Price incl. 19% VAT Aquadrive CVB10.10 for shafts 20, 25, 30, 35 and 40 mm, coupling diameter 94 mm
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1-2 weeks delivery time Price incl. 19% VAT Discover the reliability and performance of Goodrich bearing from Exalto with our Rubber Cutlass Bronze Bearings. These bronze bushings are essential for ensuring the proper and high-quality operation of your propellers, providing a dependable solution for your marine needs.
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€ 350,27
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1-2 weeks delivery time Price incl. 19% VAT For over 30 years, Aquadrive has been a trusted manufacturer of quality transmissions for marine applications. The advantages of Aquadrive systems are numerous and evident. They transform your boat's propulsion into a smoother, quieter, and vibration-free experience. With Aquadrive, the need for engine alignment becomes unnecessary.
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1-2 weeks delivery time Price incl. 19% VAT The CV joint in the Python-Drive kit P110-T for shafts with a diameter of 35 to 50 mm, a maximum torque of 110 Kgm (1080 Nm), a maximum stop of 18 kN. For 175 hp (2400 RPM) engines with a 2:1 gearbox. Coupling diameter 108 mm, coupling length 180 or 225 mm (choice)
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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.
What are the common types of bearings used with marine propeller 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.
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.