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 NFT/NCT series tunnel thruster

NGC tunnel thrusters are fallen into NCT controllable pitch propeller type and NFT fixed pitch propeller type, normally including prime mover, hydraulic system, remote control system and thruster itself. The prime mover is usually electric motor; sometimes, it also could be the diesel engine or hydraulic motor, and it can work under S2-30, S2-60 and S1;the remote system can connect Joystick and DP interface. The thruster itself can be transformed to be retractable configuration when coupled with the hydraulic cylinder.

鈻  NCT power锛280锝2800kW锛孊lade diameter锛1100mm锝3000mm锛
鈻  NFT power锛60锝2200kW锛孊lade diameter锛500mm锝2750mm锛

Performance
NCT series
NFT series
Tunnel thruster system
NRT series
Product application

Performance characteristics

To be simple and high efficient is what NGC follows after during the designing of our thrusters. To make parts easy to maintain and interchange is our quality assurance to the whole package of tunnel thrusters.

Large skewed propeller blades increase the blade ratio, and reduce the probabilities of cavitations, noise and vibration to the large extent; reasonable blade tip clearance improves the propulsion efficiency significantly.

The bevel gears are designed and manufactured to Class ISO-4 in house, which could satisfy the requirements of different input speed; the arrangement of bearings with long service life and high precision ensure the gear meshing accuracy.

Reliable material: blades and hub are produced with high strength Ni-Al bronze, and the drive shaft and gear are made of high quality alloy steel.

Drive types

鍨嬪彿 鐢垫満鍔熺巼 棰戠巼 杈撳叆杞 A B C D E F
motor
power
frequency input
rotation
kw Hz rpm
NCT110 345 50 1450 1158 1126 1200 1100 650 862
400 60 1760
NCT130 450 50 1450 1360 1328 1265 1300 780 932
500 60 1760
NCT150 560 50 1450 1570 1534 1400 1500 880 1040
630 60 1760
NCT165 680 50 1450 1732 1692 1611 1650 950 1146
780 60 1770
NCT180 880 50 1450 1882 1842 1690 1800 1040 1220
930 60 1770
NCT200 1150 50 1450 2082 2038 1890 2000 1160 1327
1000 60 1180
NCT250 1800 50 975 2620 2560 2280 2500 1460 1780
1700 60 880
NCT275 2300 50 975 2890 2810 2335 2750 1635 1911
2000 60 880
NCT300 2800 50 735 3150 3060 2500 3000 1810 2180
3050 60 880

鍨嬪彿 鐢垫満鍔熺巼 棰戠巼 杈撳叆杞 A B C D E F
motor
power
frequency input
rotation
kW Hz rpm
NFT050 60 50 1450 545 525 600 500 345 551
75 60 1755
NFT060 100 50 1450 651 621 800 600 400 623
120 60 1755
NFT070 140 50 1450 751 721 800 700 450 650
170 60 1755
NFT080 220 50 1450 862 822 920 800 500 710
260 60 1755
NFT090 220 50 1450 962 922 920 900 550 800
260 60 1755
NFT110 345 50 1450 1158 1126 1200 1100 650 862
400 60 1760
NFT130 450 50 1450 1360 1328 1265 1300 780 932
500 60 1760
NFT150 560 50 1450 1570 1534 1400 1500 880 1040
630 60 1760
NFT165 680 50 1450 1732 1692 1611 1650 950 1146
780 60 1770
NFT180 880 50 1450 1882 1842 1690 1800 1040 1220
930 60 1770
NFT200 1150 50 1450 2082 2038 1890 2000 1160 1327
1000 60 1180
NFT250 1800 50 975 2620 2560 2280 2500 1460 1780
1700 60 880
NFT275 2300 50 975 2890 2810 2335 2750 1635 1911
2000 60 880
NFT300 2800 50 735 3150 3060 2500 3000 1810 2180
3050 60 880

Tunnel thruster system drawing

        

NRT series retractable tunnel thrusters are the transfiguration of NGC CPP and FPP type Tunnel thrusters coupled with hydraulic cylinders.

 

 
Vertical lifting tunnel thruster Revolvable tunnel thruster
Under a certain work condition, it can stretch out of the hull to provide forward or side thrust to the ship. Normally they are mounted in the fore middle part of the ship, and they are retracted back into the hull during normal navigation. When the propeller is upside, it can be used as the tunnel thruster together with the pipe tunnel; when the propeller is underneath, it can be used as a temporary azimuth thruster with 360掳rotation. They are widely used in the oil tanker and ocean platform work boat.
Finished products Maritime test of tunnel thruster