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Industrial Pumps & Equipment
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 Sealing of STB Seal stern pipe with water supply. It is used in water lubrication systems and has its own water source. The seal consists of a flexible bellows and a clamp. Supplied with lubrication tube. All dimensions in millimeters. The best products from Europe for your yacht, which will last a long time and ensure high-quality operation.
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€ 114,64
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1-2 weeks delivery time Price incl. 19% VAT The highest quality products for the hermetic operation of your system. A Goodrich bearing that will best serve your valolin, with which the rotation of the propeller will be the most reliable. For convenience, we have already converted the diameter to millimeters, which means that you have the choice. And also, our specialists will always tell you which one you need.
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€ 69,44
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1-2 weeks delivery time Price incl. 19% VAT Supplied for shafts from 20 mm to 100 mm in diameter. The outer body is made of bronze, the inner part is made of polyurethane. On a separate request, we can put bearings on larger diameter shafts.
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€ 39,66
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1-2 weeks delivery time Price incl. 19% VAT Aquadrive CVB15.10 for shafts 20, 25, 30, 35 and 40 mm, coupling diameter 108 mm
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Our managers will contact you and clarify the terms of the order
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1-2 weeks delivery time Price incl. 19% VAT The CV joint in the Python-Drive kit P30-R for shafts with a diameter of 19 to 30 mm, a maximum torque of 30 Kgm (294 Nm), a maximum stop of 4.3 kN. For 50 hp (3000 RPM) engines with a 2.5: 1 gearbox. Coupling diameter 100 mm, length 145, 165 or 195 mm (choice)
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1-2 weeks delivery time Price incl. 19% VAT This seal is used in water installations. Attachment consists of flexible bellows with clamp. Comes complete with a safety ring for the assembly and tube. The water supply is controlled on the bushing as the attachment is not powered. All dimensions in millimeters. Quality goods from Europe only for you.
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€ 104,01
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1-2 weeks delivery time Price incl. 19% VAT The Exalto Duplex 1-4462 stainless steel propeller shaft, fully machined, comes complete with key, lock washer and fairing nut (with integrated anode). The taper 1:10 of the spool groove is made in accordance with ISO 4566. On order, we can make a shaft of any size, with any taper and with two ends.
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€ 516,73
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1-2 weeks delivery time Price incl. 19% VAT CENTAFLEX coupling type M for flexible coupling, especially for yachts where there are many requirements for vibration attenuation. It is offered in two sizes, with a capacity of 40 hp to 80 hp (depending on the speed of the propeller shaft). For decades, thousands of these couplings have been operating reliably on motor boats and sailing yachts. The large volume rubber element provides even torque transmission. The couplings have a turning retainer, so that the vessel remains controllable even if the rubber element breaks. Torque up to 500 Nm. Type M 127 has a standard 4 "flange connection. Type M 160 has both a 4 "and a 5" connection. Yanmar types are supplied with a connecting flange of Ø25 to 30 mm.
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€ 546,54
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1-2 weeks delivery time Price incl. 19% VAT The Hollex deadwood tube seal is used with water lubrication of the cardan shaft. It overlaps the axes in the longitudinal direction of the shaft. Sliding ring has polished surface. The combination of stainless steel with carbon will provide an ideal fit. The low coefficient of friction makes the structure durable. The best products from Europe for your ship.
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€ 748,69
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1-2 weeks delivery time Price incl. 19% VAT Goodrich Exalto bronze bearings. A high-quality product for reliable operation of your propeller and correct design of the valolin. It will last for many years and never cause problems. We translated the diameter into millimeters for the most convenient calculation. However, our specialists are always ready to help you with your choice.
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€ 68,53
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1-2 weeks delivery time Price incl. 19% VAT The CV joint in the Python-Drive kit P60-B for shafts with a diameter of 1 1/4 "to 40 mm, a maximum torque of 60 Kgm (588 Nm), a maximum stop of 5.7 kN. For 70 hp (2600 RPM) engines with a 3:1 gearbox. Coupling diameter 100 mm, length 145, 165 or 195 mm (choice)
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1-2 weeks delivery time Price incl. 19% VAT CENTAFLEX ACV is a highly elastic coupling from Exalto that provides maximum comfort and flexible connection in the joint. Torque is transmitted by articulated shaft. The thrust force of the propeller is removed through the thrust bearing and with the help of a flange, which is located directly on the hull of the boat. The motor remains free from the forces created by the propeller and can be mounted elastically. Eleven sizes have proven themselves reliably in operation on various ship drives. Rotational moments 100-14.000 Nm.
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1-2 weeks delivery time Price incl. 19% VAT Aquadrive CVB30.20 for shafts 35, 40, 45 and 50 mm, coupling diameter 148 mm, maximum stop 7 kN
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Our managers will contact you and clarify the terms of the order
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1-2 weeks delivery time Price incl. 19% VAT Aquadrive CVB21.20 for shafts 35, 40, 45 and 50 mm, coupling diameter 128 mm, maximum stop 7 kN
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Our managers will contact you and clarify the terms of the order
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1-2 weeks delivery time Price incl. 19% VAT The CV joint in the Python-Drive kit P501-W for shafts with a diameter of 60 to 80 mm, a maximum torque of 500 Kgm (4900 Nm), a maximum stop of 30 kN. For engines with a capacity of 620 hp (2400 RPM) with a 2.5: 1 gearbox. Coupling diameter 198.1 mm, coupling length 221 or 260 mm (choice)
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1-2 weeks delivery time Price incl. 19% VAT G.R.P. deadwood pipes for shafts with diameters of 25, 30 and 35 mm. Plastic deadwood pipes are installed, formed directly into the body.
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€ 79,29
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1-2 weeks delivery time Price incl. 19% VAT The seals of the Tides Marine SureSeal are suitable for use with cardan shaft lubrication. The cardan shaft is characterized by the use of a high-quality composite material with a long service life. It does not absorb water and is resistant to temperature changes. The Sure Seal comes standard with a flexible bellows and water intake. Removable front cover, will help replace the seal without removing the shaft.
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€ 514,80
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1-2 weeks delivery time Price incl. 19% VAT Bronze deadwood 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. The shaft diameter and length of the stern tube are specified.
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€ 390,42
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1-2 weeks delivery time Price incl. 19% VAT TOR Marine VTR propeller shaft bracket. These brackets are made of bronze. Each model comes complete with bearing grease. A great advantage of these brackets is that they can be set at any angle and at different heights. Thus, you will achieve maximum accuracy when placing. All dimensions in millimeters.
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€ 357,84
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1-2 weeks delivery time Price incl. 19% VAT The CV joint in the Python-Drive kit P80-M for shafts with a diameter of 30 to 45 mm, a maximum torque of 80 Kgm (785 Nm), a maximum stop of 8 kN. For 105 hp (3000 RPM) engines with a 3:1 gearbox. Coupling diameter 100 mm, coupling length 145, 165 or 195 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.