Advance D300A Heavy Duty Marine Gearbox 5.05:1 Reduction
Positioned inside high-displacement commercial engine rooms, the 880 kg Advance D300A-505 marine reduction gear transmission converts 737 HP input at 2400 RPM through a rugged 5.05:1 gear set.
- 5.05:1 ratio drives high displacement hulls.
- Input speed peaks at 2400 RPM.
- Power shift clutch provides smooth engagement.
- Center distance measures 350 mm spacing.
- Internal sump holds 20 liters oil.
$6,328.96
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Specify a 5.05:1 reduction layout with the Advance D300A Heavy Duty Marine Gearbox 5.05:1 Reduction. This heavy-duty marine transmission is specified for large-scale propulsion systems, with a maximum input rating of 737 HP (550 kW) at 2,400 RPM and a maximum input speed of 2,400 RPM.
Model D300A-505 pairs a hydraulic power-shift clutch with a listed transmission capacity of 0.31 HP/RPM (0.23 kW/RPM). the listed configuration identifies SAE 0 and SAE 00 bell housing standards, 15,736 lbf (70,000 N) maximum propeller thrust, a 13.78-inch (350 mm) center distance, and a 5.28-gallon (20-liter) oil capacity.
Fitment and Propulsion Use
The Advance D300A-505 is specified for large-scale propulsion systems. It supports drivetrain arrangements requiring a 5.05:1 reduction ratio, with engine input limited to the listed 737 HP at 2,400 RPM rating and a maximum input speed of 2,400 RPM. Confirm fitment using the engine model, serial number, rated torque, operating RPM, reduction ratio, and manufacturer drivetrain documentation before ordering.
Before Ordering the Advance D300A
Verify that Advance model D300A-505 matches your large-scale propulsion-system requirements. Confirm the 5.05:1 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 power-shift clutch, SAE 0/SAE 00 bell housing options, 15,736 lbf (70,000 N) maximum propeller thrust, 13.78-inch center distance, 5.28-gallon oil capacity, 36.0 x 32.5 x 45.0 inch dimensions, 1,940 lb dry weight, CCS/ZC (ABS grade) classification, and 1-year limited warranty. Confirm compatibility with your engine manufacturer’s documentation before purchase.
Product Specifications
Advance D300A Heavy Duty Marine Transmission - 5.05:1 Ratio
| Brand | Advance |
|---|---|
| Model / SKU | D300A-505 |
| Country of Origin | China |
| US Support / Warranty | 1-Year Limited Warranty |
| Reduction Ratio | 5.05:1 |
| 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 00 |
| Clutch Type | Hydraulic Power Shift |
| Max Propeller Thrust | 15,736 LBF (70,000 N) |
| Center Distance | 13.78" (350 mm) |
| Oil Capacity | 5.28 Gallons (20 Liters) |
| Dry Weight | 1,940 lbs (880 kg) |
| Dimensions (LxWxH) | 36.0" x 32.5" x 45.0" |
| Classification / Certs | CCS / ZC (ABS Grade) |
| Primary Application | Large-Scale Propulsion Systems |
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