Advance HCT800 Heavy Duty Marine Gearbox 8.40:1 Reduction

Description

Configure deep reduction for towing or dredging with the Advance HCT800 Heavy Duty Marine Gearbox 8.40:1 Reduction. This two-stage marine gearbox is specified for heavy-duty towing and industrial dredging, with an 8.40:1 reduction ratio, maximum input power of 1,170 HP (872 kW) at 1,800 RPM, and a maximum input speed of 2,100 RPM.

Model HCT800-840 uses a hydraulic two-stage reducer clutch configuration and provides a listed transmission capacity of 0.65 HP/RPM (0.48 kW/RPM). The supplied drivetrain data includes SAE 00 and SAE 0 bell housing standards, 31,473 lbf (140,000 N) maximum propeller thrust, a 17.72-inch (450 mm) center distance, and a 17.1-gallon (65-liter) oil capacity.

Key Features of Advance HCT800

• 8.40:1 reduction ratio identifies the listed two-stage speed-reduction configuration for propulsion-system matching.
• 1,170 HP (872 kW) maximum input power at 1,800 RPM defines the stated engine-input rating.
• 2,100 RPM maximum input speed identifies the stated operating-speed limit.
• 0.65 HP/RPM (0.48 kW/RPM) transmission capacity provides the listed capacity specification.
• Hydraulic two-stage reducer clutch configuration identifies the supplied transmission arrangement.
• SAE 00 and SAE 0 bell housing standards define the listed engine-interface options.
• 31,473 lbf (140,000 N) maximum propeller thrust provides the stated thrust rating.
• 17.72-inch (450 mm) center distance supports verification of drivetrain geometry.
• 17.1-gallon (65-liter) oil capacity identifies the stated lubricant fill quantity.
• 41.6 x 50.4 x 56.1 inch dimensions and 5,952 lb dry weight support installation-space and handling planning.

Fitment and Propulsion Use

The Advance HCT800-840 is specified for heavy-duty towing and industrial dredging. It supports propulsion systems requiring an 8.40:1 reduction ratio, subject to matching the engine’s rated torque, operating RPM, SAE 00 or SAE 0 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.

Installation and Service Considerations

Verify the SAE 00 or SAE 0 bell housing interface and confirm that the vessel structure, engine alignment, and propeller-shaft geometry accommodate the 17.72-inch center distance, 41.6 x 50.4 x 56.1 inch housing, and 5,952 lb dry weight. The supplied data lists a 17.1-gallon oil capacity. 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 HCT800

Verify that Advance model HCT800-840 is correct for your heavy-duty towing or industrial-dredging propulsion system. Confirm the 8.40:1 reduction ratio, 0.65 HP/RPM (0.48 kW/RPM) transmission capacity, 1,170 HP (872 kW) maximum input power at 1,800 RPM, 2,100 RPM maximum input speed, hydraulic two-stage reducer clutch configuration, SAE 00/SAE 0 bell housing options, 31,473 lbf (140,000 N) maximum propeller thrust, 17.72-inch center distance, 17.1-gallon oil capacity, 41.6 x 50.4 x 56.1 inch dimensions, 5,952 lb dry weight, CCS/ZC (ABS grade) classification, and 1-year limited warranty. Confirm compatibility with your engine manufacturer’s documentation before purchase.