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Advance GCS750 Marine Gearbox

The speed input range of the Advance GCS750 marine gearbox is 300-950 RPM, with engine input power from 2160 kW to 6840 kW, the reduction Ratio is 1.97-3.95,the transmission capacity range is 7.2 kW/RPM, the rated propeller thrust is 730 KN, the center distance is 750 mm, and the Input and output vertical isocenter.

Advanced GCS750 marine gearbox can form the main propulsion system of the ship with the main engine and adjustable propeller, with the functions of clutch, deceleration and bearing propeller thrust, and can be configured with auxiliary power output (PTO) and auxiliary power input (PII), etc. The CPP oil dispenser is installed at the front of the gearbox output according to the demand.

The advanced GCS750 marine gearbox provides two types of maneuvering control, pneumatic control and electric control, for users to choose. To meet the different requirements for coupling with different makes and models of engines, the Advanced GCS750 marine gearbox is available in engine flywheel sizes.

All of our Advance GC series marine gearbox can provide CCS classification certificate, some of series can provide international classifications with extra costs which mainly including French BV, British LR, American ABS, Japanese NK , Norway DNV-GL, Russia RS, South Korea KR, Italy RINA and other classification societies.

Advantages Of Advance GCS750 Marine Gearbox

  • Gearbox novel structure, so that its use becomes very reliable. The excellent design makes the gearbox and engine arrangement more soft and smooth.

  • It can be matched with high-speed diesel engines at home and abroad, and can be arranged in vertical, horizontal and inclination according to the needs of users.

  • The gearbox have adapted to combined design, and all running parts have been carefully designed and machined to the highest standards for less wasted fuel, smooth operation which can be fitted to most engine models.

  • 1-stage deceleration, the input and output levels are off-center, and the running direction is the same. It has the functions of double input, single output and clutch deceleration.

  • Professional gearbox specialists and after-sales service, spare parts directly available from stock.

Gearbox Model:GCS750
Input Speed:300-950 RPM
Power:2160 -6840 kW
Center Distance:750 mm
Trans.Capacity:730 kW/RPM
Reduction Ratio:1.97-3.95
Rated Thrust:730 kN
Net Weight:N/A
Lead Time:15-30 Working Days
Payment Terms:T/T ,L/C

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Input Speed

Reduction Ratio

Trans. Capacity

Rated Thrust

Center Distance

GCS320400-1800 RPM1.97-4.000.57 kW/RPM100 KN320 mm
GCS350400-1800 RPM2.00-4.050.72 kW/RPM113 KN350 mm
GCS390400-1800 RPM2.03-3.950.96 kW/RPM140 KN390 mm
GCS410400-1600 RPM2.00-3.951.292 kW/RPM175 KN410 mm
GCS450400-1600 RPM1.97-4.001.64 kW/RPM220 KN455 mm
GCS490400-1400 RPM2.03-3.952.12 kW/RPM270 KN490 mm
GCS540400-1200 RPM1.97-3.952.825 kW/RPM290 KN540 mm
GCS590400-1200 RPM1.97-3.953.64 kW/RPM360 KN590 mm
GCS660400-1200 RPM2.00-3.955.05 kW/RPM540 KN668 mm
GCS700B400-1200 RPM2.00-4.474.744-4.183 kW/RPM450 KN700 mm
GCS750300-950 RPM1.97-3.957.2 kW/RPM730 KN750 mm
GCS760300-900 RPM1.94-3.958.111 kW/RPM750 KN768 mm
GCS850300-800 RPM1.97-3.959.6 kW/RPM800 KN855 mm
GCS880200-650 RPM2.0-3.9512.063 kW/RPM1000 KN880 mm
GCS900200-800 RPM2.0-4.1011.282 kW/RPM980 KN900 mm
GCS950200-650 RPM2.0-3.9514 kW/RPM1000 KN965 mm
GCS1000200-800 RPM2.0-3.9517 kW/RPM1400 KN1018 mm

Technical Specifications of Advance GCS750 Marine Gearbox

ModelGCS750Power(kW)2160-6840Center Distance(mm)750
Input Speed(r/min)300-950Reduction Ratio(i)1.97Trans. Capacity(kW/rpm)7.2
Rated Thrust(kN)750Net Weight(kg)N/AControlsElectrical/Pneumatical
  1. The Marine gearbox has the function of reverse, clutch, deceleration and the thrust of the propeller, which is equipped with the main engine to form the Marine power unit. 2. The “transfer capacity” refers to the ratio of the engine’s rated power to the rated speed, and the reduction ratio corresponds to the transmission capacity, which should be less than the number be offered. 3. The gearbox and engine shafting are not allowed to use rigid connection, and the bracket is recommended to be installed on the same rigid support.If the engine is mounted on the elastic support, and the gearbox is installed on the rigid support, please contact the technical department of the company to select the suitable high elastic coupling. 4. The weight of the gearbox is approximation, for different reduction ratio the weight is different. 5. Due to the technical improvement of the products, the products may change without notice. For any other questions please contact our sales engineer.


NameTransverse DirectionLongitudinal Direction
Marine Gearbox15°22.5°7.5°

Optional Accessories of Advance GCS750 Marine Gearbox

Bell Housing195CInput Coupling1. Highly Flexible Coupling
/2. Toothed Input Coupling
Direction of Input Shaft Rotation1. Anti-clockwise (Facing the Output End)VDOGearbox Pressure  Visible on Bridge
2. Clockwise (Facing the Output End)
Alarm Device1. TemperatureControl System1. Mechanical
2. Working Pressure2. Electrical
3. Lubricating Oil Pressure3. Pneumatical
Gauge Oil Temperature

Modifiable Components of Advance GCS750 Marine Gearbox

Special Reduction RatioAccording to Customer’s Special RequirementsReplacement of Imported Bearing1. Stronger Endurance
2. Longer Service Life
3. Higher Limit Speed
PTOPower Take OffOutput Shaft CouplingBased on Customers data to produce

Marine Gearboxs Conventional Wearing Parts

External discInternal discSealingPiston ring
GasketRubber sealingThrust plateFilter
Coil type filterPackingO ringInput shaft assembly
Transmission shaft assembyOutput shaft assemblyHydraulic control system

Note: All Above Data are Just for Reference, All Data Might Change Without Notices or Updates, Please Contact Our Sales Team to Confirm All Details Via WhatsApp or Email.

The picture of Sale Manual showing the accessories and scopes of supply.

Engine Sale Manual

The picture of Installation Drawing showing the accessories and scopes of supply.

Installation Drawing

The picture of Installation Manual showing the accessories and scopes of supply.

Installation Manual

The picture of Operation Manual showing the accessories and scopes of supply.

Operation Manual

The picture of Engine Parts Catalogue showing the accessories and scopes of supply.

Parts Catalogue

The picture of Test Report and Certifcate showing the accessories and scopes of supply.

Report & Certifcate

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