Advance 300 Heavy Duty Marine Gearbox 4.47:1 Reduction

Set up trawler or workboat propulsion with the Advance 300 Heavy Duty Marine Gearbox 4.47:1 Reduction. This heavy-duty marine transmission is specified for commercial trawlers and workboats, with a 4.47:1 reduction ratio, maximum input power of 737 HP (550 kW) at 2,400 RPM, and a maximum input speed of 2,400 RPM.

Model ADV300-447 uses a hydraulic multi-disc clutch and provides a listed transmission capacity of 0.31 HP/RPM (0.23 kW/RPM). Its stated drivetrain configuration includes SAE 0 and SAE 1 bell housing standards, 11,240 lbf (50,000 N) maximum propeller thrust, a 10.63-inch (270 mm) center distance, and a 4.22-gallon (16-liter) oil capacity.

Fitment and Propulsion Use

The Advance ADV300-447 is specified for commercial trawlers and workboats. It supports propulsion systems requiring a 4.47:1 reduction ratio, subject to verification of engine rated torque, actual operating RPM, SAE bell housing interface, propeller-thrust requirement, and complete drivetrain arrangement. Confirm fitment using the engine model, serial number, rated torque, operating RPM, reduction ratio, and manufacturer drivetrain documentation before ordering.

Before Ordering the Advance 300

Verify that Advance model ADV300-447 is correct for your commercial trawler or workboat propulsion application. Confirm the 4.47:1 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 multi-disc clutch, SAE 0/SAE 1 bell housing options, 11,240 lbf (50,000 N) maximum propeller thrust, 10.63-inch center distance, 4.22-gallon oil capacity, 31.5 x 28.5 x 38.0 inch dimensions, 1,433 lb dry weight, CCS/ZC approval, and 1-year limited warranty. Confirm compatibility with your engine manufacturer’s documentation before purchase.