Advance HCD800 Heavy Duty Marine Gearbox 4.90:1 Reduction

Match offshore vessel propulsion with the Advance HCD800 Heavy Duty Marine Gearbox 4.90:1 Reduction. This deep-case marine gearbox is specified for offshore supply and trawling vessels, with a 4.90:1 reduction ratio, maximum input power of 800 HP (596 kW) at 2,400 RPM, and a maximum input speed of 2,400 RPM.

Model HCD800-490 uses a heavy-load hydraulic multi-disc clutch and provides a listed transmission capacity of 0.33 HP/RPM (0.243 kW/RPM). Its supplied drivetrain configuration includes SAE 0 and SAE 1 bell housing standards, 25,178 lbf (112,000 N) maximum propeller thrust, a 15.16-inch (385 mm) center distance, and a 10.5-gallon (40-liter) oil capacity.

Fitment and Propulsion Use

The Advance HCD800-490 is specified for offshore supply and trawling vessels. It supports propulsion systems requiring a 4.90:1 reduction ratio, subject to matching the engine’s rated torque, operating RPM, SAE 0 or SAE 1 bell housing interface, propeller-thrust requirement, and complete shaft 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 HCD800

Verify that Advance model HCD800-490 is correct for your offshore supply or trawling-vessel propulsion system. Confirm the 4.90:1 reduction ratio, 0.33 HP/RPM (0.243 kW/RPM) transmission capacity, 800 HP (596 kW) maximum input power at 2,400 RPM, 2,400 RPM maximum input speed, heavy-load hydraulic multi-disc clutch, SAE 0/SAE 1 bell housing options, 25,178 lbf (112,000 N) maximum propeller thrust, 15.16-inch center distance, 10.5-gallon oil capacity, 38.0 x 35.5 x 48.0 inch dimensions, 2,645 lb dry weight, CCS/ZC (ABS grade) classification, and 1-year limited warranty. Confirm compatibility with your engine manufacturer’s documentation before purchase.