Advance D300A Heavy Duty Marine Gearbox 4.48:1 Reduction

Description

Configure a commercial fishing drivetrain with the Advance D300A Heavy Duty Marine Gearbox 4.48:1 Reduction. This heavy-duty marine transmission is specified for commercial fishing and ocean trawlers, with a 4.48:1 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-448 uses a hydraulic power-shift clutch and has a listed transmission capacity of 0.31 HP/RPM (0.23 kW/RPM). Its specified configuration includes 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

• 4.48:1 reduction ratio identifies the listed speed-reduction configuration for propulsion matching.
• 737 HP (550 kW) maximum input power at 2,400 RPM defines the listed engine-input rating.
• 2,400 RPM maximum input speed provides the listed operating-speed limit.
• 0.31 HP/RPM (0.23 kW/RPM) transmission capacity identifies the listed capacity specification.
• Hydraulic power-shift clutch provides the listed clutch configuration.
• SAE 0 and SAE 00 bell housing standards identify the listed engine-interface options.
• 15,736 lbf (70,000 N) maximum propeller thrust defines the listed thrust rating.
• 13.78-inch (350 mm) center distance supports verification of drivetrain geometry.
• 5.28-gallon (20-liter) oil capacity identifies the listed lubricant fill quantity.
• 36.0 x 32.5 x 45.0 inch dimensions and 1,940 lb dry weight support installation planning.

Fitment and Propulsion Use

The Advance D300A-448 is specified for commercial fishing vessels and ocean trawlers. It supports propulsion systems requiring a 4.48:1 reduction ratio, subject to verification of engine rated torque, actual operating RPM, SAE interface, propeller-thrust requirement, and the complete drivetrain arrangement. Confirm fitment using the engine model, serial number, rated torque, operating RPM, reduction ratio, and manufacturer drivetrain documentation before ordering.

Installation and Service Considerations

Verify the correct SAE 0 or SAE 00 bell housing interface and confirm that the engine, gearbox, propeller shaft, and structural mounting arrangement are suitable for the 13.78-inch center distance and 1,940 lb dry weight. The transmission has a listed oil capacity of 5.28 gallons. 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-448 is correct for your commercial fishing vessel or ocean trawler propulsion application. Confirm the 4.48:1 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.