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Advance GCST115 Marine Gearbox

The speed input range of the Advance GCST115 marine gearbox is 200-650 RPM, with engine input power from 2413 kW to 7841 kW, the reduction Ratio is 4.5-6.0,the transmission capacity range is 12.063 kW/RPM, the rated propeller thrust is 1400 KN, the center distance is 1260 mm, and the Input and output vertical isocenter.

Advanced GCST115 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 GCST115 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 GCST115 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 GCST115 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.

Technical Specifications

Gearbox Model:GCST115
Input Speed:200-650 r / min
Power:2413-7841 kW
Center Distance:1260 mm
Trans.Capacity:12.063 kw/r/min
Reduction Ratio:4.50-6.00
Rated Thrust:1400 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

GCST5400-1800 r/min4.50-5.950.57 kW/r/min120 KN445 mm
GCST6400-1800 r/min4.50-5.950.72 kW/r/min170 KN480 mm
GCST9400-1800 r/min4.50-5.950.96 kW/r/min220 KN545 mm
GCST11400-1600 r/min4.52-5.951.292 kW/r/min220 KN570 mm
GCST15400-1600 r/min4.46-5.961.64 kW/r/min270 KN630 mm
GCST20400-1400 r/min4.50-5.952.12 kW/r/min300 KN680 mm
GCST26400-1200 r/min4.58-5.952.825 kW/r/min360 KN750 mm
GCST33400-1200 r/min4.54-5.953.64 kW/r/min540 KN820 mm
GCST44400-1200 r/min4.52-5.965.05 kW/r/min600 KN924 mm
GCST66300-900 r/min4.48-6.007.2 kW/r/min1000 KN1064 mm
GCST77300-900 r/min4.50-6.008.111 kW/r/min1000 KN1100 mm
GCST91300-800 r/min4.50-6.009.6 kW/r/min1000 KN1190 mm
GCST108200-800 r/min4.50-6.0011.282 kW/r/min1400 KN1230 mm
GCST115200-650 r/min4.50-6.0012.063 kW/r/min1400 KN1260 mm
GCST135200-650 r/min4.50-6.0014 kW/r/min1400 KN1350 mm
GCST170200-800 r/min4.50-6.0017 kW/r/min1400 KN1430 mm

Technical Specifications of Advance GCST115 Marine Gearbox

ModelGCST115Power(kW)2413-7841Center Distance(mm)1260
Input Speed(r/min)200-650Reduction Ratio(i)4.5Trans. Capacity(kW/rpm)12.063
Rated Thrust(kN)1400Net 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 GCST115 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 GCST115 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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