Specifications

marine gearbox,ship transmission case,transmission gearbox,diesel engine part

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;