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Advance HC400 Heavy Duty Marine Gearbox 4.06:1 Reduction
Handling high diesel torque on coastal workboats, the 820 kg Advance HC400-406 heavy duty marine gearbox converts 684 HP input at 1800 RPM through a 4.06:1 reduction gear set.
- 4.06:1 ratio powers coastal workboat hulls.
- Input power handles 684 maximum HP.
- Multi-disc clutch prevents severe gear shock.
- Lubrication sump holds 23 liters fluid.
- Durable gear unit weighs 820 kg.
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Description
Match coastal propulsion requirements with the Advance HC400 Heavy Duty Marine Gearbox 4.06:1 Reduction. This heavy-duty marine transmission is specified for high-torque coastal vessels, with a 4.06:1 reduction ratio, maximum input power of 684 HP (510 kW) at 1,800 RPM, and a maximum input speed of 1,800 RPM.
Model HC400-406 uses a hydraulic multi-disc clutch and provides a listed transmission capacity of 0.38 HP/RPM (0.28 kW/RPM). Its supplied drivetrain configuration includes SAE 0 and SAE 1 bell housing standards, 18,434 lbf (82,000 N) maximum propeller thrust, a 10.39-inch (264 mm) center distance, and a 6.07-gallon (23-liter) oil capacity.
Key Features of Advance HC400
- 4.06:1 reduction ratio identifies the listed speed-reduction configuration for propulsion-system matching.
- 684 HP (510 kW) maximum input power at 1,800 RPM defines the listed engine-input rating.
- 1,800 RPM maximum input speed identifies the listed operating-speed limit.
- 0.38 HP/RPM (0.28 kW/RPM) transmission capacity provides the listed capacity specification.
- Hydraulic multi-disc clutch identifies the listed clutch arrangement.
- SAE 0 and SAE 1 bell housing standards define the listed engine-interface options.
- 18,434 lbf (82,000 N) maximum propeller thrust provides the listed thrust rating.
- 10.39-inch (264 mm) center distance supports verification of drivetrain geometry.
- 6.07-gallon (23-liter) oil capacity identifies the listed lubricant fill quantity.
- 25.2 x 39.8 x 35.0 inch dimensions and 1,807 lb dry weight support installation-space and handling planning.
Fitment and Propulsion Use
The Advance HC400-406 is specified for high-torque coastal vessels. It supports propulsion systems requiring a 4.06:1 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.
Installation and Service Considerations
Verify the SAE 0 or SAE 1 bell housing interface and confirm that the vessel structure, engine alignment, and propeller-shaft geometry accommodate the 10.39-inch center distance, 25.2 x 39.8 x 35.0 inch housing, and 1,807 lb dry weight. the listed data lists a 6.07-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 HC400
Verify that Advance model HC400-406 is correct for your high-torque coastal-vessel propulsion system. Confirm the 4.06:1 reduction ratio, 0.38 HP/RPM (0.28 kW/RPM) transmission capacity, 684 HP (510 kW) maximum input power at 1,800 RPM, 1,800 RPM maximum input speed, hydraulic multi-disc clutch, SAE 0/SAE 1 bell housing options, 18,434 lbf (82,000 N) maximum propeller thrust, 10.39-inch center distance, 6.07-gallon oil capacity, 25.2 x 39.8 x 35.0 inch dimensions, 1,807 lb dry weight, CCS approval, and 1-year limited warranty. Confirm compatibility with your engine manufacturer’s documentation before purchase.
Advance HC400 Heavy Duty Marine Transmission - 4.06:1 Ratio
| Brand | Advance |
| Model / SKU | HC400-406 |
| Country of Origin | China |
| US Support / Warranty | 1-Year Limited Warranty |
| Reduction Ratio | 4.06:1 |
| Transmission Capacity | 0.38 HP / RPM (0.28 kW / RPM) |
| Max Input Power | 684 HP (510 kW) @ 1800 RPM |
| Max Input Speed | 1800 RPM |
| Bell Housing Standard | SAE 0 / SAE 1 |
| Clutch Type | Hydraulic Multi-disc |
| Max Propeller Thrust | 18,434 LBF (82,000 N) |
| Center Distance | 10.39" (264 mm) |
| Oil Capacity | 6.07 Gallons (23 Liters) |
| Dry Weight | 1,807 lbs (820 kg) |
| Dimensions (LxWxH) | 25.2" x 39.8" x 35.0" |
| Classification / Certs | CCS Approved |
| Primary Application | High-Torque Coastal Vessels |
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