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Advance 300 Heavy Duty Marine Gearbox 4.61:1 Reduction
Engineered for vessel repower projects, the 650 kg Advance ADV300-461 inboard boat transmission gearbox steps down 737 HP at 2400 RPM with a 4.61:1 ratio to match commercial propulsion shafts.
- 4.61:1 ratio matches diverse workboat setups.
- 737 HP rating supports commercial diesels.
- Hydraulic clutch enables smooth helm control.
- Lubrication reservoir holds 16 liters oil.
- Standard iron body weighs 650 kg.
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Description
Plan a marine repower around the Advance 300 Heavy Duty Marine Gearbox 4.61:1 Reduction. This heavy-duty marine transmission is specified for marine propulsion and repower projects, with a 4.61:1 reduction ratio, maximum input power of 737 HP (550 kW) at 2,400 RPM, and a maximum input speed of 2,400 RPM.
Model ADV300-461 pairs a hydraulic multi-disc clutch with a listed transmission capacity of 0.31 HP/RPM (0.23 kW/RPM). the listed specifications include SAE 0 and SAE 1 bell housing standards, 11,240 lbf (50,000 N) maximum propeller thrust, a 10.63-inch (270 mm) center distance, and a 4.22-gallon (16-liter) oil capacity.
Key Features of Advance 300
- 4.61:1 reduction ratio provides the listed speed-reduction configuration for matching the drivetrain design.
- 737 HP (550 kW) maximum input power at 2,400 RPM identifies the listed engine-input rating.
- 2,400 RPM maximum input speed defines the listed input-speed limit.
- 0.31 HP/RPM (0.23 kW/RPM) transmission capacity provides the listed capacity specification.
- Hydraulic multi-disc clutch is specified for the transmission clutch arrangement.
- SAE 0 and SAE 1 bell housing standards identify the listed engine-interface options.
- 11,240 lbf (50,000 N) maximum propeller thrust defines the listed thrust capacity.
- 10.63-inch (270 mm) center distance identifies the listed drivetrain geometry measurement.
- 4.22-gallon (16-liter) oil capacity provides the listed lubricant quantity.
- CCS approval is listed for this marine transmission.
Fitment and Propulsion Use
The Advance ADV300-461 is specified for marine propulsion and repower projects. It supports a drivetrain layout requiring a 4.61:1 reduction ratio, with engine input limited to the listed 737 HP at 2,400 RPM rating and 2,400 RPM maximum input speed. Confirm fitment using the engine model, serial number, rated torque, operating RPM, reduction ratio, and manufacturer drivetrain documentation before ordering.
Installation and Service Considerations
For a repower, verify the actual SAE 0 or SAE 1 bell housing connection, engine alignment, shaft geometry, propeller-thrust requirement, mounting structure, and available clearance before installation. Account for the 31.5 x 28.5 x 38.0 inch housing, 1,433 lb dry weight, and 10.63-inch center distance. The listed oil capacity is 4.22 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 300
Verify that Advance model ADV300-461 matches your marine propulsion or repower project. Confirm the 4.61:1 reduction ratio, 0.31 HP/RPM (0.23 kW/RPM) transmission capacity, 737 HP (550 kW) maximum input power at 2,400 RPM, 2,400 RPM maximum input speed, hydraulic multi-disc clutch, SAE 0/SAE 1 bell housing options, 11,240 lbf (50,000 N) maximum propeller thrust, 10.63-inch center distance, 4.22-gallon oil capacity, 31.5 x 28.5 x 38.0 inch dimensions, 1,433 lb dry weight, CCS approval, and 1-year limited warranty. Confirm compatibility with your engine manufacturer’s documentation before purchase.
Advance 300 Heavy Duty Marine Transmission - 4.61:1 Ratio
| Brand | Advance |
| Model / SKU | ADV300-461 |
| Country of Origin | China |
| US Support / Warranty | 1-Year Limited Warranty |
| Reduction Ratio | 4.61:1 |
| Transmission Capacity | 0.31 HP / RPM (0.23 kW / RPM) |
| Max Input Power | 737 HP (550 kW) @ 2400 RPM |
| Max Input Speed | 2400 RPM |
| Bell Housing Standard | SAE 0 / SAE 1 |
| Clutch Type | Hydraulic Multi-disc |
| Max Propeller Thrust | 11,240 LBF (50,000 N) |
| Center Distance | 10.63" (270 mm) |
| Oil Capacity | 4.22 Gallons (16 Liters) |
| Dry Weight | 1,433 lbs (650 kg) |
| Dimensions (LxWxH) | 31.5" x 28.5" x 38.0" |
| Classification / Certs | CCS Approved |
| Primary Application | Marine Propulsion & Repower Projects |
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