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Marine gearbox model D400(A) for Marine Diesel Engines
Marine gearbox 400, which performs the duties of reduction, ahead and astern, engaging and disengaging, and carrying the propeller thrust, is designed in response to the matching requirement of middle and high speed engines either domestic or abroad.
The installation and connection diemensions of model 400 and D400(A) are basically similar with one of model 300&D300(A), but the former transmission capacity is 30% higher than of the latter, which are the best selects for boat reconstruction and new set matching.
Marine gearbox D400(A):
1.Transmission mode: 5 helical gears with 3 shafts.
2.Clutch: Hydraulically-controlled wet-type multi plates.
3.Input coupling: high flexible coupling or rubber coupling.
4.Input speed: 1000-1800rpm(up to 2300rpm on special request).
5.Center distance:264mm
6.Ratios and the transmission capacity(with high flexible coupling):
Normal ratio | Practical ratio | Trans.capacity kW/(rpm) ,Trans.torque N.M |
4:1 | 3.96:1 | 0.331(0.45) |
4.3:1 | 4.33:1 | |
4.5:1 | 4.43:1 | |
4.7:1 | 4.70:1 | |
5:1 | 5.0:1 | |
5.5:1 | 5.53:1 | 0.293(0.40) |
6:1 | 5.89:1 | 0.272(0.37) |
Note: With toothed rubber blocks,the transmission capacity is respectively less 9% approx.
7.Direction of rotation of input shaft(facing the output end): Anticlockwise
8.Direction of rotation of output shaft:Contrary to that of input shaft,when ahead
9.Rated propeller thrust:82,000N
10.Mechanical efficiency:≥0.96%
11.Time required for reversal:≤10S
13.Working oil pressure:1.3-1.5MPa
15.Oil grade: SC/CC30,CC40 or SAE30;for summer in the torrid zone:CC50
16.Oil capacity:23L
16.Max.oil temp.:≤80°C
17.Cooling water consumption:≥4t/h
18.Permissible angle of inclination: 10°longitudinally;
15°transversely
19.Overhaul:over 10,000h
20.Overal dimension(L*W*H): 843X1010X1066mm
21.Net weight: 1030kg;
marine gear box 400 series