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 The HD-115L CV-Drive Shaft System by Hydradrive supports inboard marine applications up to 135hp, integrating a CV-joint shaft, self-aligning thrust bearing, and adapter flange for precise thrust transfer and reliable performance.
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$ 1.355,18
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1-2 weeks delivery time The HD-125 CV-Drive Shaft System is designed for higher torque loads and propeller thrust, suitable for full planing vessels up to 220hp, including a CV-joint shaft, thrust bearing, and adapter flange compatible with various shaft diameters.
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$ 2.198,39
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1-2 weeks delivery time The HD-130 CV-Drive Shaft System Set supports high-performance marine engines up to 250hp, featuring an adapter, CV-joint shaft, and thrust bearing designed for efficient power transmission and durability under demanding conditions.
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$ 4.329,63
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1-2 weeks delivery time The Lasdrop DrySeal Extend Kit for Propeller Shaft Ø25mm is designed for inboard systems with a 25mm diameter propeller shaft. This kit enhances the functionality of the shaft for more efficient performance.
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$ 102,85
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1-2 weeks delivery time The Lasdrop DrySeal Extend Kit for Propeller Shaft Ø30mm is crafted for inboard systems with a 30mm diameter propeller shaft. It allows for a seamless fit and enhances the shaft's functionality for better performance.
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$ 125,37
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1-2 weeks delivery time The Lasdrop DrySeal Extend Kit for propeller shafts with a 35mm diameter enhances the sealing performance and durability, offering an effective solution for inboard shaft protection.
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$ 154,30
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1-2 weeks delivery time The Lasdrop DrySeal Extend Kit for 40mm inboard propeller shafts ensures optimal sealing, enhancing the functionality and lifespan of your marine equipment.
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$ 160,73
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1-2 weeks delivery time The PSMC 20 Single Stage Damper Plate with a 121.5mm diameter and plastic core supports 200Nm of continuous torque and has 10 teeth splines. It mounts using eight 6.5mm holes on a 111mm pitch and features a fixed height of 31mm.
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$ 171,79
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1-2 weeks delivery time The PSMC 20 Single Stage Damper Plate with a plastic core and 121.5mm diameter supports 250Nm of continuous torque with 26 teeth splines. It maintains the same 111mm hole pitch and 8 x 6.5mm mounting, with an adjustable height of 47.5 ± 6.5mm.
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$ 191,85
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1-2 weeks delivery time The PSMC 20 Single Stage Damper Plate with plastic core, 151.3mm in diameter, and 10 teeth splines supports 250Nm of continuous torque. It uses a mounting pattern of eight 6.5mm holes on a 140mm pitch and has an adjustable height of 47.5 ± 6.5mm.
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$ 192,03
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1-2 weeks delivery time The PSMC 20 Single Stage Damper Plate with a plastic core and 151.3mm diameter supports 200Nm of continuous torque with 26 teeth splines. It uses the same 8 x 6.5mm mounting pattern on a 140mm pitch and has an adjustable height of 47.5 ± 6.5mm.
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$ 192,03
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1-2 weeks delivery time The PSMC 20 Single Stage Damper Plate with a 159mm diameter and 10 splines is designed for 200Nm of continuous torque. It mounts using five 9mm holes on a 142mm pitch and has a fixed height of 31mm.
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$ 211,92
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1-2 weeks delivery time The PSMC 20 Single Stage Damper Plate with a plastic core, 159mm in diameter, and 26 teeth splines supports 200Nm of continuous torque. It uses five 9mm mounting holes on a 142mm pitch and has a height of 47.5 ± 6.5mm.
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$ 211,92
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1-2 weeks delivery time The PSMC 20 Single Stage Damper Plate with a plastic core and 185mm diameter includes 10 teeth splines and supports 200Nm of continuous torque. It mounts using six 6.5mm holes on a 175mm pitch and has a fixed height of 31mm.
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$ 211,92
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1-2 weeks delivery time The PSMC 20 Single Stage Damper Plate with plastic core and 185mm diameter features 26 teeth splines and supports 200Nm of continuous torque. It uses six 6.5mm holes on a 175mm pitch and has an adjustable height of 47.5 ± 6.5mm.
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$ 200,71
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1-2 weeks delivery time The PSMC 20 Single Stage Damper Plate with plastic core and 190mm diameter features 10 splines and handles 200Nm of continuous torque. It mounts with six 9.3mm holes on a 170mm pitch and has a height of 31mm.
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$ 168,10
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1-2 weeks delivery time The PSMC 20 Single Stage Damper Plate with plastic core and 190mm diameter is designed for higher torque, supporting 300Nm continuously. It has 26 teeth splines, mounts with six 9.3mm holes on a 170mm pitch, and has a height of 47.5 ± 6.5mm.
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$ 168,10
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1-2 weeks delivery time The damper plate with article number AL400007 includes an EAN number and upgraded torque ratings—250Nm continuous and 400Nm maximum. It retains the 215.9mm diameter and 10 splines but features an adjustable height of 47.5 ± 6.5mm, while the mounting configuration remains unchanged.
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$ 191,47
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1-2 weeks delivery time The AL400008 model offers a significant upgrade with 26 teeth splines while keeping the 215.9mm diameter. It supports 300Nm continuous torque and 550Nm maximum torque, with the same mounting layout and a height of 47.5 ± 6.5mm.
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$ 191,47
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1-2 weeks delivery time The AL400011 model features the same 241.3mm diameter and 10 teeth splines but boosts the torque capacity to 250Nm continuous and 400Nm maximum. It maintains the same mounting and hole pitch but increases the height to 47.5 ± 6.5mm.
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$ 191,70
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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