Shafting System Components

The marine shafting system is a critical component of a ship's power transmission system, responsible for transferring the engine's power to the propeller to propel the vessel. Its main components include the thrust shaft, intermediate shaft, tail shaft, propeller shaft, as well as supporting parts such as bearings, couplings, and sealing devices. The design and manufacturing of the shafting system must meet high standards of strength, precision, and corrosion resistance to ensure reliable operation under complex sea conditions. High-quality shafting systems effectively reduce vibration and noise, improve transmission efficiency, and extend service life, making them essential for the safe navigation of ships.

Modern marine shafting systems widely adopt advanced materials and manufacturing techniques, such as high-strength alloy steel, surface hardening treatments, and laser alignment technology, to further enhance performance and reliability. The design of the shafting system must also consider compatibility with the main engine, propeller, and other power systems to achieve optimal overall efficiency. Whether for large commercial vessels, naval ships, or specialized vessels, the quality and performance of the shafting system directly impact the safety and economic efficiency of the ship's operation.

Hydraulic nut

easy to mount and lock the propeller

Propeller

high speed propeller, nozzle propeller, big area ratio, large - sized propeller
hydraulic connection key connection
material: Cu1, Cu2, Cu3, Cu4

Nozzle

fixed type, movable type, turnable type
made of stainless steel and steel

Stern tube seal

water lub and oil lub
built - in 2, 3, 4 sealing rings
aft seal accessories ( optional ) sand prevention ring warding rinfishnet preventive device

Bearing

Oil lub ( white metal )
water lub ( rubber or high polymer )

Stern Tube

one-piece welding type, split type
made of casting steel, forging steel, low carbon steel

Tail shaft

key connection hydraulic connectio flange connection
carbon steel, alloy steel, stainless steel

Hydraulic coupling

flange type, sleeve type
with middle sleeve type, without middle sleeve type

Middle bearing

rolling bearing, sliding bearing
single oil wedge, multi-oil wedges
multi - oil wedge includes :
with upper bush type
without upper bush type

SeaMac Marine Propeller

Founded in 2010 and headquartered in Guangdong, China, SEAMAC Group Co., Ltd. is committed to becoming a leading one-stop supplier in the maritime field. We have our own marine propeller factory and stock nearly 5,000 propellers of different specifications, covering all types of ship needs. Every production process is strictly controlled to ensure the high quality and stability of the product. With nearly 15 years of technology and experience in the industry, SEAMAC can now not only provide efficient marine propellers, but also a full range of power system solutions including marine engines, marine controllers and marine generator sets.

Our Projects

Our company has equipped more than 30 tugboat with more than 60 rudder propeller,the power of which covers tugboat from 220KW to 3920KW.

OEM or ODM !

Customize Your Propeller

We offer tailor-made propeller solutions for every vessel, ensuring optimal fuel efficiency, enhanced performance, and reduced vibration. By working closely with our team of expert engineers, you can customize your propeller’s size, blade design, materials, and performance specifications to meet your exact needs. Whether it’s maximizing cargo capacity, optimizing speed, or improving stability, our custom propellers are engineered to meet your specific technical requirements. With state-of-the-art design tools and precision manufacturing processes, we deliver the most efficient propeller to ensure your vessel performs at its best in all maritime conditions.

To facilitate customization, you may need to click here to let us know your requirements.

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