Ratios and the corresponding transmission capacities
Nomina ratios		Actual ratios		Transmission capacities(kw/rpm)
2.0:1		1.97:1		0.029
2.5:1		2.52:1
3.0:1		3.03:1
3.5:1		3.54:1		0.026
4.0:1		3.95:1		0.023
4.5:1		4.5:1		0.02
5:01		5.06:1		0.016
5.5:1		5.47:1		0.013
Rated Propeller thrust		Mechanical efficiency		Time required for reversal		Center distance
8500N				≤10s		142mm
oil capacity		Max. oil temp		cooling water consumption		permissible angle of inclination
about 5.8 L		≤80℃		35m3/h		100 longitudinally  150 transversely
Overhaul		Net weight		outside dimensions
over 6000h		130kg		367*560*540(mm)
1. Marine gearbox Model MA142 has the capacities of ahead and astern, clutching and disclutching, reducing speed and carrying the propeller thrust.    2.The said gearbox possesses reliable construction,smooth clutching, easy maintenance, Beautiful shape.                                                                                3.Work stably, Low noise, and durable application, particularly, big transmission power, small bulk and light weight.                                                       4.All products are approved by ABS, BV,CCS,DNV, GL, LR, NK,ect, Certificated of quality system ISO9001:2000.