Fenders

Marine Shafts

Propeller Stern Shaft

The stern shaft materials have passed EN10204-3.1 certification, covering various grades of: low carbon steel, alloy steel, stainless steel, ductile iron, aluminum alloy, copper alloy, titanium alloy. The main processes are: free forging, die forging, rolling ring, high pressure casting, centrifugal casting, normalizing, quenching and tempering, solution treatment, aging treatment, carbonitriding, turning, milling, drilling, grinding, high frequency quenching, galvanizing, chrome plating, anodizing, powder spraying and other processes.

We can produce propeller shafts with:

A max length of16000mm, max diameter 500mm and max single piece weight 16 Tons. At the same time, we are good at terminal machining of complex products, dimension accuracy: Min 0.01mm, roughness: Min Ra0.6.

Shafting System Counter shaft

The intermediate shaft, covering various grades of: low carbon steel, alloy steel, stainless steel, ductile iron, aluminum alloy, copper alloy, titanium alloy.
The main processes are: free forging, die forging, rolling ring, high pressure casting, centrifugal casting, normalizing, quenching and tempering, solution treatment, aging treatment, carbonitriding, turning, milling, drilling, grinding, high frequency quenching, galvanizing, chrome plating, anodizing, powder spraying and other processes.

Shafting System Coupling

The shaft coupling is the component which joins the propeller shaft to the gearbox output flange. Some are bolted directly to the gearbox but many installers use a flexible couple, such as R&D flexible couplings, which would then bolt to the gearbox. Our range includes couplings for most popular transmission types, bored for imperial or metric shafts. Besides the standard coupling, the Solid Half Coupling, Clamp on or Split Half Coupling, Bobbin Coupling and Coupling Adapters are also available.


Material: carbon steel, stainless steel
Processing methods: forged and lathe machining
Dimensions: designed according to the shaft and gearbox.

Shafting System Hydraulic Coupling

The shaft coupling is the component which joins the propeller shaft to the gearbox output flange. Some are bolted directly to the gearbox but many installers use a flexible couple, such as R&D flexible couplings, which would then bolt to the gearbox. Our range includes couplings for most popular transmission types, bored for imperial or metric shafts.
Besides the standard coupling, the Solid Half Coupling, Clamp on or Split Half Coupling, Bobbin Coupling and Coupling Adapters are also available.

Propellers

  Marine Propellers Catalogue

 

Calculations

Because choosing the right propeller is crucial for an efficient propulsion system, we specializesin propeller calculation. We can give you a solid, thorough advice on the  right propeller in yourspecific situation .

Propellers Shapes & Sizes

We offer have a very wide range of propellers to choose from. We offer propellers:

– In almost any kind and for every application imaginable, varying from standard propellers to propellers for displacement, sailing or plaining vessels.

– In diameters measuring from 5″ up to almost 5 meters.

– In all known materials like Mn.Br, Ni.Al.Br. and stainless steel.

– With approval of various classi cation societies, e.g. LR, BV, ABS, DNV, GL etc.

These propellers are designed with CAD/CAM-technology and fabricated with CNC machines. This contributes to a higher efficiency, less vibrations, a lower noise level and less fuel consumption.

Free Rotation Of The Propeller

After the diameter of the propeller has been determined, it is very important to know whether this propeller can be fitted. To prevent vibration it is absolutely necessary to take into account certain clearances of the propeller. Clearance of the propeller needs to be 15% of the diameter of the propeller at the top and 4% at the bottom.

Efficiency Propellers

Type EP

They are made of manganese bronze (Mn.Br.). These propellers comply to the ISO 484/2 class II 

tolerances and are dynamically balanced. We always keep 3B and 4B propellers in common dimensions 

on stock, just to ensure you quick deliverance. In most situations Mn.Br. is a good material for propellers. But when it comes to aluminium vessels, we advise the use of a nickel aluminium bronze propeller. Manganese bronze contains up to 40% of zinc, which always causes galvanic problems when used with aluminium. Nickel aluminium bronze is free of zinc, so this will not cause any troubles. If there is a lot of cavitation, or if the engine is very powerful, we advise nickelaluminium bronze as well.

 

Marine Sterntube

 

 Depending  on the hull material or its construction method, we can provide sterntubes to be welded in place, fixed  between  bulkheads  by  clamp  nuts  or  to  be laminated in place. Also, for vessels that are produced to the standards of all well-established  classification  societies  (e.g. Lloyds, BV, DNV and ABS), AAM-Equipment can supply sterntubes with the casting procedure or by boring. AAM-Equipment  sterntubes are made of only the best quality materials (steel, stainless steel, brass, GRP and aluminium), to ensure the sterntubes meet our high quality standards. we are able to anticipate on the following aspects:

 
–  Propeller calculation.
–  Shaft inclination.
–  Desired lubricant: water, grease or oil.
–  Hull material and desired mounting system. 
–  Calculation of shaft diameter and taper size. 
–  Shaft sealing.
–  Coupling.

 

 
 
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