L-Drive Azimuth Thruster

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Details

China L-Drive Azimuth Thruster:

An L-drive is a type of azimuth thruster where the electric motor is mounted vertically, removing the second bevel gear from the drivetrain. Azimuth thruster pods can be rotated through a full 360 degrees, allowing for rapid changes in thrust direction and eliminating the need for a conventional rudder. This form of power transmission is called an L-drive because the rotary motion has to make one right angle turn, thus looking a bit like the letter "L". This name is used to make clear the arrangement of drive is different from Z-drive.

Jinbo marine’s L-Drives fixed pitch propeller, thru-hull, azimuth thrusters are configured for vertical variable speed electric motor input. Sizes range from 45kW to 2200kW with a wide selection of reduction ratios and propeller/nozzle diameters to suit the application requirements. Thrusters can be supplied complete with electric motors and variable frequency drives or they can be made to fit flange and shaft end of a customer supplied or shipyard supplied electric motor. They are available with open wheel or with nozzle.

Specification

Type CRP20 CRP42 CRP85 CRP168
Input power max.(KW) 45 100 210 300
HP 61 135 285 400
Input torque max.(Sf=1) 200 420 850 1675
Input speed max. 2300 2500 2350 2000
Reduction Rate i I 1.93 2.5 2.68 3.46
I up 1.7 1.64 1.65 1.53
I down 1.13 1.52 1.62 2.26
propeller diameter Max. 500 800 950 1150
Min. 700 900
PAL length* Max. 2250 2800 2800 4250
Min. 350 875 980 1400
Weight (including blades, lubricating oil, and the minimum PAL) 65 190 300 1370
PAL increase the weight of kg per 100mm 8 9 20.4 40
Type CRP280 CRP330 CRP550 CRP1470 CRP1950
Input power max.(KW) 480 620 920 1250 1650
HP 650 843 1250 1700 2244
Input torque max.(Sf=1) 2800 3300 5423 14740 19500
Input speed max. 1800 1800 1800 1000 1000
Reduction Rate i I 3.96 4.04 5.059 3.257 3.58
I up 1.63 1.53 1.647 1.286 1.286
I down 2.43 2.64 3.071 2.533 2.79
propeller diameter Max. 1550 1500 1800 2100 2300
Min. 1250
PAL length* Max. 4750 5000
Min. 1750 1700 2600 2800 3000
Weight (including blades, lubricating oil, and the minimum PAL) 2100 2800 5820 11000 16500
PAL increase the weight of kg per 100mm 40 45

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