MA142 Marine Gearbox

FeaturesofMarinegearboxseriesMA: 1.Thehydraulicsystembuiltinthegearboxmakestheoperationeasyfromthebridgewithremotecontrol.Aunitofpressuredelaysteppingupisfittedinthehydrauliccontrolsystemandthecluthissmoothinengagementandthoroughindisengagement. 2.Twosetsofmultiplateclutchesaremountedattheoutputendandeasytodis-andre-assembleandmainenance. 3.Thehousingisintegraltoensureitsrigidityandtheprecisionforengaging. 4.Bothaheadandasternareidenticalinreductionratiosandcantransmittheratedpower,especiallysuitableforboatsequippedwithtwin-engines,whichhavethesamerotation,andtwin-propellers. 5.Theemergencysetisprovidedtoensuretheboattravellingcontinuouslyincaseofseverehydraulicfailure. 6.Bellhousingandflexibleinputcouplingareconnectedwiththeenginesoastobelooked-perfectlythewholeunitandeasilyinmounting. 7.Therageofthespeedreductionratiosiswiderasfollows.Userscanchoosetheratiosuitabletotransmissioncapacityinaccordancewiththedataoftheengineortheboat. SpeedReductionRatiosforMarineGearboxMA142 Model MA142 NominalRatio 2:1 2.5:1 3:1 3.5:1 4:1 4.5:1 5:1 5.5:1 ActualRatio 1.97:1 1.52:1 3.03:1 3.54:1 3.95:1 4.5:1 5.06:1 5.47:1 TechnicalData: Descriptions Model MA142 TechnicalParametersandSpecifications Transmission 3shaftswith5helicalgears CenterDistance(mm) 142 RatedInputSpeed(r/min) 1500 2500 RatioandTransmissionCapacity (detailasFig.1) RatedPropellerThrust(N) 8500 PermissibleInclinationAngle 10°longitudinally 15°transversely ControlType hydrauliccontrol TimeforReversing(s) ≤10 RotationalDirectionofInputShaft (facetotheoutputendforeward) counter-clockwise RotationalDirectionofOutputatAheadPosition (facetotheoutputendforeward) clockwise HydraulicPressure(MPa) 1-1.3 InitialOilPressure(Mpa) 0.15-0.4 Max.OilTemp.(°C) ≤80 FlowofCoolingWater(L/min) (inletwatertemp.≤30°C) 35 OilGrade SD/CC30,SAE30;SD/CC40,SAE40 (forsummeruseintropicalareas) OilCapacity(L) 5.8 TypeofConnectedwithEngine elasticcoupling Overhaul(bearinglifetime)(h) 6000 OverallDimensions(L×W×H) 367×560×540 NetWeight(kg) 130