Advance HCT800 Heavy Duty Marine Gearbox 6.43:1 Reduction

Match ocean-trawler propulsion with the Advance HCT800 Heavy Duty Marine Gearbox 6.43:1 Reduction. This two-stage marine gearbox is specified for ocean trawlers and heavy-displacement hulls, with a 6.43:1 reduction ratio, maximum input power of 1,476 HP (1,100 kW) at 1,800 RPM, and a maximum input speed of 2,100 RPM.

Model HCT800-643 uses a hydraulic two-stage reducer clutch configuration and provides a listed transmission capacity of 0.82 HP/RPM (0.603 kW/RPM). Its supplied drivetrain configuration 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.

Fitment and Propulsion Use

The Advance HCT800-643 is specified for ocean trawlers and heavy-displacement hulls. It supports propulsion systems requiring a 6.43:1 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.

Before Ordering the Advance HCT800

Verify that Advance model HCT800-643 is correct for your ocean trawler or heavy-displacement-hull propulsion system. Confirm the 6.43:1 reduction ratio, 0.82 HP/RPM (0.603 kW/RPM) transmission capacity, 1,476 HP (1,100 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 approval, and 1-year limited warranty. Confirm compatibility with your engine manufacturer’s documentation before purchase.