Advance D300A Heavy Duty Marine Gearbox 4.00:1 Reduction

Description

Match a tugboat drivetrain to the Advance D300A Heavy Duty Marine Gearbox 4.00:1 Reduction. This heavy-duty marine transmission is specified for tugboats and high-displacement hulls, with a 4.00:1 reduction ratio, maximum input power of 737 HP (550 kW) at 2,400 RPM, and a maximum input speed of 2,400 RPM.

Model D300A-400 uses a hydraulic power-shift clutch and provides a listed transmission capacity of 0.31 HP/RPM (0.23 kW/RPM). the listed data identifies SAE 0 and SAE 00 bell housing standards, 15,736 lbf (70,000 N) maximum propeller thrust, a 13.78-inch (350 mm) center distance, and a 5.28-gallon (20-liter) oil capacity.

Key Features of Advance D300A

• 4.00:1 reduction ratio provides the listed speed-reduction configuration for propulsion-system matching.
• 737 HP (550 kW) maximum input power at 2,400 RPM defines the listed engine-input rating.
• 2,400 RPM maximum input speed identifies the listed operating-speed limit.
• 0.31 HP/RPM (0.23 kW/RPM) transmission capacity provides the listed capacity specification.
• Hydraulic power-shift clutch identifies the listed clutch type.
• SAE 0 and SAE 00 bell housing standards define the listed engine-interface options.
• 15,736 lbf (70,000 N) maximum propeller thrust provides the listed thrust capacity.
• 13.78-inch (350 mm) center distance identifies the listed drivetrain geometry measurement.
• 5.28-gallon (20-liter) oil capacity provides the listed lubricant fill quantity.
• CCS/ZC (ABS grade) classification is listed for this transmission.

Fitment and Propulsion Use

The Advance D300A-400 is specified for tugboats and high-displacement hulls. It supports drivetrain designs requiring a 4.00:1 reduction ratio, within the listed 737 HP maximum input rating at 2,400 RPM and 2,400 RPM maximum input speed. Confirm fitment using the engine model, serial number, rated torque, operating RPM, reduction ratio, and manufacturer drivetrain documentation before ordering.

Installation and Service Considerations

Confirm the engine uses the required SAE 0 or SAE 00 bell housing interface, and verify alignment, shaft configuration, propeller-thrust requirements, and installation clearance before mounting. Account for the 36.0 x 32.5 x 45.0 inch housing, 1,940 lb dry weight, and 13.78-inch center distance. the listed data lists 5.28 gallons of oil capacity. Follow the engine and gearbox manufacturer’s installation manuals and product instructions for alignment, lubrication, controls, cooling connections, and service procedures.

Before Ordering the Advance D300A

Verify that Advance model D300A-400 matches your tugboat or high-displacement-hull propulsion system. Confirm the 4.00:1 reduction ratio, 0.31 HP/RPM (0.23 kW/RPM) transmission capacity, 737 HP (550 kW) maximum input power at 2,400 RPM, 2,400 RPM maximum input speed, hydraulic power-shift clutch, SAE 0/SAE 00 bell housing options, 15,736 lbf (70,000 N) maximum propeller thrust, 13.78-inch center distance, 5.28-gallon oil capacity, 36.0 x 32.5 x 45.0 inch dimensions, 1,940 lb dry weight, CCS/ZC (ABS grade) classification, and 1-year limited warranty. Confirm compatibility with your engine manufacturer’s documentation before purchase.