Advance 300 Heavy Duty Marine Gearbox 4.47:1 Reduction

Description

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.

Key Features of Advance 300

• 4.47:1 reduction ratio identifies the listed speed-reduction configuration for commercial propulsion matching.
• 737 HP (550 kW) maximum input power at 2,400 RPM provides 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 defines the listed capacity specification.
• Hydraulic multi-disc clutch provides the listed clutch configuration.
• SAE 0 and SAE 1 bell housing standards identify the listed engine-interface options.
• 11,240 lbf (50,000 N) maximum propeller thrust defines the listed thrust rating.
• 10.63-inch (270 mm) center distance supports verification of drivetrain geometry.
• 4.22-gallon (16-liter) oil capacity identifies the listed lubricant fill quantity.
• CCS and ZC approval are listed for this model.

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.

Installation and Service Considerations

Confirm the required SAE 0 or SAE 1 bell housing interface and verify that engine alignment, vessel mounting structure, shaft geometry, and propeller-thrust requirements match the installed transmission. Check available clearance for the 31.5 x 28.5 x 38.0 inch housing and 1,433 lb dry weight. The transmission has a listed oil capacity of 4.22 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 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.