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Tandem Azimuth Thruster Marine Rudder Propellers

Tandem Azimuth Thruster is the main Propulsion unit，it adopts the twin screw arrangement（Left and Right）. Main function of the Marine Rudder Propellers is to transmit the diesel power to propeller then generate the thrust through flexible coupling, clutch, cardan shaft etc., meanwhile ,it can control the low gear box's rotating direction by commanding the electro-hydraulic system to achieve the thruster in any directions.
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Tandem Azimuth Thruster Marine Rudder Propellers
Tandem Azimuth Thruster is the main Propulsion unit，it adopts the twin screw arrangement（Left and Right）. 
Main function of the Marine Rudder Propellers is to transmit the diesel power to propeller then generate the thrust through flexible coupling, clutch, cardan shaft etc., meanwhile ,it can control the low gear box's rotating direction by commanding the electro-hydraulic system to achieve the thruster in any directions.  
Installation Type
Installation type
Arrangement of Azimuth Thruster System
Drawing of the Rudder Propeller
1.Rudder propeller          2. Well box                       3.Pneumatic clutch             4.Cardan shaft
5.Buckhead sealing         6.Intermediate shaft         7.Short shaft                       8.Elastic coupling
9.Lubricate pump           10.Electric relay box          11.Steering apparatus         12.Rudder indicator         
13.Emergency steering control switch                     14.Emergency speed control switch    
15.Hydraulic motor         16.Hydraulic pump            17.Feed-back unit
Control panel
control panel

Tandem Azimuth Thruster
marine-azimuth-thruster
Technical Specification of Propulsion System


Type

Input power max.

 Input rpm [rpm]

Propeller rpm max.

Max. Dia. [mm]

Weight

[Kg]

KW

HP

No nozzle

With nozzle

No nozzle

No nozzle

SZP5A

50

68

2400 / 2200 / 2000 / 1800

1350

450

420

65

SZP5B

1500 / 1200 / 1000

78

SZP8A

80

109

2200 / 2000 / 1800 / 1600

1055

580

550

115

SZP8B

1500 / 1200 / 1000 / 900

138

SZP10A

100

136

2200 / 2000 / 1800 / 1600

926

660

630

190

SZP10B

1500 / 1200 / 1000 / 900

228

SZP15A

150

204

2200 / 2000 / 1800 / 1600

764

836

800

770

280

SZP15B

1500 / 1200 / 1000 / 900

336

SZP20A

200

272

2000 / 1800 / 1600 / 1500

644

728

920

880

365

SZP20B

1200 / 1000 / 900 / 800

438

SZP25A

250

340

2000 / 1800 / 1600 / 1500

582

640

1050

1000

1170

SZP25B

1200 / 1000 / 900 / 800

1405

SZP30A

300

408

2000 / 1800 / 1600 / 1500

531

556

1150

1100

1370

SZP30B

1200 / 1000 / 900 / 800

1645

SZP35A

350

476

2000 / 1800 / 1600 / 1500

477

522.5

1230

1175

1735

SZP35B

1200 / 1000 / 900 / 800

2082

SZP40A

400

544

1800 / 1500 / 1200

463

489

1320

1250

2100

SZP40B

1000 / 900 / 825 / 750 / 600

2520

SZP50A

500

680

1800 / 1500 / 1200

413

436

1480

1400

2500

SZP50B

1000 / 900 / 825 / 750 / 600

2750

SZP60A

600

816

1800 / 1600 / 1500 / 1200

377

407

1620

1500

2800

SZP60B

1000 / 900 / 825 / 750 / 600

3080

SZP75A

750

1020

1800 / 1600 / 1500 / 1200

339

408.6

1800

1680

4500

SZP75B

1000 / 900 / 825 / 750 / 600

4950

SZP90A

900

1224

1800 / 1600 / 1500 / 1200

306

380

2000

1800

6000

SZP90B

1000 / 900 / 825 / 750 / 600

6600

SZP110A

1105

1503

1800 / 1600 / 1500 / 1200

278

360

2200

2000

7000

SZP110B

1000 / 900 / 825 / 750 / 600

7700

SZP130A

1325

1802

1800 / 1600 / 1500 / 1200

255

307

2400

2150

18000

SZP130B

1000 / 900 / 825 / 750 / 600

SZP150A

1500

2040

1800 / 1600 / 1500 / 1200

240

278

2550

2300

20000

SZP150B

1000 / 900 / 825 / 750 / 600

SZP170A

1765

2400

1600 / 1500 / 1200 / 1000

222

256

2750

2500

22000

SZP170B

900 / 825 / 750 / 550

SZP190A

1912

2600

1600 / 1500 / 1200 / 1000

210

246

2900

2600

24000

SZP190B

900 / 825 / 750 / 550

SZP220A

2206

3000

1600 / 1500 / 1200 / 1000

196

226

3100

2800

28000

SZP220B

900 / 825 / 750 / 550

SZP260A

2600

3536

1600 / 1500 / 1200 / 1000

180

213

3400

3000

41000

SZP260B

900 / 825 / 750 / 550

SZP300A

3000

4080

1600 / 1500 / 1200 / 1000

168

198

3650

3250

53000

SZP300B

900 / 825 / 750 / 550


Power transmission of the propulsion device depends on max input torque of the device. Propulsion application type, prime mover type and vessel type affect actual input torque. Please kindly contact our technical engineer for propulsion type selection.
Rated input torque MP of prime mover(diesel, electric motor or hydraulic motor) is important technical date for propulsion type selection. Calculation formula is as below:
Mp ≤ Sf * MR
Mp = N * 9549 / n
Sf = fz * fl * fs

Marks: 
Mp(Nm): Output torque of prime mover
Sf: Rudder propeller service factors
Mr(Nm): Max input torque of rudder propeller
N(KW): Output power of prime mever 
n(r/min): Input speed of rudder propeller

The desing torque can't be taken as the basis for propulsion type selection according to our experience.
Different operation conditions must be taken into consideration. Common safety coefficient Sf of torque design can be based on the following:
Sf=0.75: Full power continuous rating 24 hours service(Container ships, push tugs)
Sf=0.9: Intermettent service with eventual full load( harbor tugs, floating crane)
Sf=1.0: Auxilliray installations(Tunnel thruster, DP-installations)

Safety coefficient Sf of propulsion device should meet the classification navigation specification. Sf should be between 0.33-0.67 for those with ice class requirement. For those with special installation request please contact our technical engineer for type selection.

SF

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