Marine Electrical Stern Thruster

Marine Electrical Stern Thruster

Application

A marine electrical stern thruster is a type of propulsion system used in ships and boats to provide additional maneuverability and control. It consists of an electric motor that drives a propeller mounted in a tunnel at the stern of the vessel, perpendicular to the direction of travel. Electrical stern thrusters are typically used in smaller to medium-sized vessels, such as pleasure boats and yachts, where maneuverability is important for docking and mooring. They can provide excellent maneuverability in a variety of marine environments, allowing the vessel to move sideways, forwards, or backwards as required.

Features

1. Optimized combination of diameter-rotate speed of propeller, that improve propulsion efficiency, in the same thrust force we have smaller diameter, improve the ratio of utilization of cabin.

2. Skew blade and large disk ratio, reduce vibration and improve cavitation performance.

3. Gear and bearing have high strength and long longevity, and dipped into oil to got better lubrication and cooling effect, which improving the reliability of TP.

4. Underwater structure are optimized so that it have rational construction, which convenient for maintenance and repairing.

5. Tail shaft sealing are enough reliable sealing, meet the strict requirements of anti-pollution law of sea and ocean environment.

6. For extreme load conditions.

7. Low noise and vibration.

8. We can design and manufacture the product according to client's drawing or sample.

We not only provide customers with high-quality products, but also provide complete system solutions and added services for specific customers. Therefore, There are high competitiveness.

Configuration options

Part Name	Type/Material	Advantages/Disadvantages
Electric Motor Type	HENGLI and LANHAI brand	Good quality, cost-effective, long service life. Self-contained brake, high safety.
	Other brands	High power consumption, relatively poor quality.
	ABB/WEG/Siemens	Good quality, high cost, long delivery time.
Propeller	Ni-Al-Bronze (Cu3)	Excellent comprehensive mechanical properties and corrosion resistance.
	Ni-Mn Bronze (Cu2)	High strength, good hardness, good wear resistance, good elasticity, no spark, corrosion resistance, non-magnetic, excellent cold working performance, excellent electroplating and welding performance.
	Manganese Bronze (Cu1)	It has high strength, hardness and good plasticity, can well withstand pressure processing in hot and cold states, has good corrosion resistance, and has high thermal strength.
	Stainless Steel	Good corrosion resistance, high hardness.
Tunnel	WANXIANG / HONGBO	Corrosion resistance, good quality, cost-effective.

Due to the fierce market competition, the phenomenon of low quality of other winch suppliers is frequent. What is the difference between us and other low-quality suppliers?

The specific differences are as follows:

Part name	Other low quality suppliers	Result	Our factory	Consequence
Electric Motor Type	Other brands	High power consumption, relatively poor quality.	HENGLI or LANHAI brand	Cost-effective, good quality. Self-contained brake, high safety.
Propeller	Cast iron	Easy to corrode, easy to rust	Stainless steel	Good corrosion resistance, high hardness
	Cast iron	Easy to corrode, easy to rust	Manganese Bronze (Cu1)	It has high strength, hardness and good plasticity, can well withstand pressure processing in hot and cold states, has good corrosion resistance, and has high thermal strength.
	Brass	Dezincification is easy to occur in seawater, resulting in cavitation corrosion and affecting navigation safety.	Ni-Mn Bronze (Cu2)	High strength, good hardness, good wear resistance, good elasticity, no spark, corrosion resistance, non-magnetic, excellent cold working performance, excellent electroplating and welding performance.
	Brass		Ni-Al-Bronze (Cu3)	Excellent comprehensive mechanical properties, resistance to stress corrosion cracking, corrosion fatigue resistance, cavitation corrosion resistance, erosion resistance, marine biofouling resistance. After heat treatment, it can reach the level of duplex stainless steel. Compared with brass, the corrosion resistance is three times that of brass, and the wear resistance is twice that of brass.
Tunnel	Other brands	Easy to corrode, relatively poor quality	WANXIANG / HONGBO	Corrosion resistance, good quality, cost-effective

Marine Electrical Stern Thruster Drawing

Technique Data

	CTT010		CTT060		CTT160		CTT550		CTT1010
Min-1	1470	1170	1470	1170	1470	1170	1470	1170	1170	970
Hz	50	60	50	60	50	60	50	60	60	50
KW/h.p.	63/86	50/68	125/170	100/136	280/380	280/380	900/1224	725/986	1250/1700	1000/1360
KN	9.5	7.9	17.5	14.5	42	42	125	110	183	155
mm	1000		1000		1500		2000		2500
mm	12		12		20		20		20
mm	500		630		1000/1100		1750		2100
Kg	300		430		1450		2680		3200

Propeller Dia.	Input power max.	Frequency	Input rpm	Zero pitch torque max	rotating inertia	weight
Φ.mm	KW	HZ	rpm	NM	Kgm2	tunnel device	Motor＆starter
1100	320	50	1450	160	1.2	1300	850
1100	380	60	1750	220	1.2	1300	850
1300	445	50	1450	340	1.9	2500	1300
1300	480	60	1750	470	1.9	2500	1300
1650	590	50	1450	340	4.5	3700	2300
1650	800	60	1750	500	4.5	3700	2300
2800	2240	50	980	3935	65	20500	5000
2800	2010	60	880	3300	65	20500	5000
2300	3500	50	590	5600	358	31000	6000
2300	3500	60	590	5600	358	31000	6000

Maintenance advice

1. Regularly check whether there is leakage of hydraulic oil in the side thruster of the ship, regularly add tallow to the moving bearings and couplings, and replenish the hydraulic oil of the system in time.

2. Clean the dust in the ship's thruster control panel in time and check the working condition of the ACB.

If the ACB fails to close there are several reasons:

2.1. The control circuit has no electricity;

2.2. The main switch energy storage motor does not store energy normally;

2.3. There is no closing signal to the main switch closing coil;

2.4. The main switch under voltage coil has no electricity.

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