Advance HCD800 Heavy Duty Marine Gearbox 3.96:1 Reduction

Description

Handle high-power towing duty with the Advance HCD800 Heavy Duty Marine Gearbox 3.96:1 Reduction. This deep-case marine gearbox is specified for heavy-duty tugboats and offshore trawlers, with a 3.96:1 reduction ratio, maximum input power of 1,530 HP (1,141 kW) at 1,800 RPM, and a maximum input speed of 2,100 RPM.

Model HCD800-396 uses a hydraulic multi-disc clutch and has a listed transmission capacity of 0.85 HP/RPM (0.625 kW/RPM). Its supplied drivetrain configuration includes SAE 00 and SAE 0 bell housing standards, 24,729 lbf (110,000 N) maximum propeller thrust, a 17.72-inch (450 mm) center distance, and a 13.2-gallon (50-liter) oil capacity.

Key Features of Advance HCD800

• 3.96:1 reduction ratio identifies the listed speed-reduction configuration for high-power propulsion matching.
• 1,530 HP (1,141 kW) maximum input power at 1,800 RPM defines the listed engine-input rating.
• 2,100 RPM maximum input speed provides the listed operating-speed limit.
• 0.85 HP/RPM (0.625 kW/RPM) transmission capacity identifies the listed capacity specification.
• Hydraulic multi-disc clutch provides the listed clutch configuration.
• SAE 00 and SAE 0 bell housing standards identify the listed engine-interface options.
• 24,729 lbf (110,000 N) maximum propeller thrust defines the listed thrust rating.
• 17.72-inch (450 mm) center distance supports verification of drivetrain geometry.
• 13.2-gallon (50-liter) oil capacity identifies the listed lubricant fill quantity.
• 41.6 x 50.4 x 52.8 inch dimensions and 4,960 lb dry weight support installation planning.

Fitment and Propulsion Use

The Advance HCD800-396 is specified for heavy-duty tugboats and offshore trawlers. It supports propulsion systems requiring a 3.96:1 reduction ratio, subject to verification of engine rated torque, actual operating RPM, SAE bell housing 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 00 or SAE 0 bell housing interface and confirm that the engine, gearbox, propeller shaft, and structural mounting arrangement are suitable for the 17.72-inch center distance and 4,960 lb dry weight. The transmission has a listed oil capacity of 13.2 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 HCD800

Verify that Advance model HCD800-396 is correct for your heavy-duty tugboat or offshore-trawler propulsion application. Confirm the 3.96:1 reduction ratio, 0.85 HP/RPM (0.625 kW/RPM) transmission capacity, 1,530 HP (1,141 kW) maximum input power at 1,800 RPM, 2,100 RPM maximum input speed, hydraulic multi-disc clutch, SAE 00/SAE 0 bell housing options, 24,729 lbf (110,000 N) maximum propeller thrust, 17.72-inch center distance, 13.2-gallon oil capacity, 41.6 x 50.4 x 52.8 inch dimensions, 4,960 lb dry weight, CCS/ZC (ABS grade) classification, and 1-year limited warranty. Confirm compatibility with your engine manufacturer’s documentation before purchase.