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Advance HC300 Marine Gearbox

The speed input range of the Advance HC300 marine gearbox is 700-2500 RPM, with engine input power from 273 kW to 539.7 kW. the center distance is 264 mm, the reduction ratio range is 1.50-5.44, the transmission capacity range is 0.13-0.257 kW/RPM, the rated propeller thrust is 50 KN, and the input shaft is in the train Opposite to the output shaft.

Advance HC300 marine gearbox is composed of transmission shaft, output coupling, input coupling, oil pressure gauge, oil Filter, control system, oil pump and other important components.

Advance HC300 marine gearboxes provides three types of control system which are push-pull flexible shaft, electric control and pneumatic control for customers to choose. To meet the different requirement of coupling with different engine brand and models, Advance HC300 marine gearboxes provide different SAE size coupling and housing including SAE 0 1, flywheel SAE 18 16 14 is available……

All of our Advance 300 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 HC300 Marine Gearbox

  • Advanced design and sophisticated manufacturing to adapt to various harsh working conditions! High-strength parts, strong ability to work under heavy loads.

  • Cylinder block and cylinder head adopt integrated design. The occurrence of engine water leakage and oil leakage is prevented, and the parts are about 40% less than other similar engines. The failure rate is greatly reduced.

  • Using forged steel camshaft and crankshaft, high-strength cylinder block design, multiple parts cast on the cylinder block, high rigidity, high pressure resistance, good reliability, and longer service life.

  • The cylinder bore adopts a platform mesh honing design. The perfect geometric structure effectively prevents oil leakage, and the use of advanced technology such as new piston ring components and gasket crimping and molding reduces oil loss.

  • The five key systems of the electronically controlled engine are all developed by DCEC, and have been applied and verified in different fields around the world to ensure the excellent economy and reliability of the product.

  • By optimizing the control strategy and combining with the actual operating conditions of the equipment, the fuel economy can be further improved.

Technical Specifications

Gearbox Model:HC300
Input Speed:700-2500 RPM
Power:510.3 kW @ 2100 RPM
Center Distance:264 mm
Trans.Capacity:0.257-0.13 kW/RPM
Reduction Ratio:1.50-5.44
Rated Thrust:50 kN
Dimension:680 mm * 930 mm * 880 mm
Net Weight:680 kg
Lead Time:15-30 Working Days
Payment Terms:T/T ,L/C


Input Speed

Trans. Capacity




300750-2500 RPM0.257 kW/RPM539.7 kW @ 2100 RPM786 mm *930 mm * 864 mmMechanical/Electrical/Pneumatical
HC300700-2500 RPM0.257 kW/RPM539.7 kW @ 2100 RPM680 mm * 930 mm * 880 mmMechanical/Electrical/Pneumatical
J300750-2500 RPM0.28 kW/RPM588 kW @ 2100 RPM786 mm * 930 mm * 864 mmMechanical/Electrical/Pneumatical
D300A1000-2500 RPM0.257 kW/RPM539.7 kW @ 2100 RPM786 mm * 1010 mm * 1041 mmMechanical/Electrical/Pneumatical
T3001000-2300 RPM0.243 kW/RPM510.3 kW @ 2100 RPM772 mm * 980 mm  * 1106 mmMechanical/Electrical/Pneumatical
T300/11000-2300 RPM0.196 kW/RPM411.6 kW @ 2100 RPM772 mm * 980 mm * 1106 mmMechanical/Electrical/Pneumatical
Technical Specifications of Advance HC300 Marine Gearbox
ModelHC300Input Speed(r/min)700-2500Center Distance(mm)264
Reduction Ratio(i)1.50 1.87 2.04 2.23 2.54 3.0 3.53Trans.Capacity(kW/rpm)0.257Power(kW)539.7 kW @ 2100 RPM
4.10 4.470.2420 kW @ 100 RPM
4.610.184386. 4 kW @ 2100 RPM
4.940.147308.7 kW @ 2100 RPM
5.440.13273 kW @ 100 RPM
Rated Thrust(kN)50Dimension(mm)680*930*880Net Weight(kg)680
FlywheelSAE18 16 14Bell HousingSAE0 1ControlsMechanical/Electrical/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 HC300 Medium-Low Duty 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 HC300 Medium-Low Duty 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.

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Engine Sale Manual

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

Installation Drawing

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Installation Manual

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Operation Manual

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Parts Catalogue

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

Report & Certifcate

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