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Advance D300A Heavy Duty Marine Gearbox 5.52:1 Reduction

Delivering a 5.52:1 reduction ratio with 737 HP input at 2400 RPM, the 880 kg Advance D300A-552 heavy duty marine gearbox drives heavy displacement commercial hulls in rough seas.

  • 5.52:1 reduction turns large commercial propellers.
  • Hydraulic power shift eliminates gear shock.
  • Heavy thrust bearing takes 70000 N.
  • SAE bell housing matches large diesels.
  • Massive cast housing weighs 880 kg.
$6,185.12
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Category: Brand: SKU: ADV-D300A-552
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Match high-displacement propulsion with the Advance D300A Heavy Duty Marine Gearbox 5.52:1 Reduction. This heavy-duty marine transmission is specified for high-displacement commercial hulls, with a 5.52:1 reduction ratio, maximum input power of 737 HP (550 kW) at 2,400 RPM, and a maximum input speed of 2,400 RPM.

Model D300A-552 uses a hydraulic power-shift clutch and provides a listed transmission capacity of 0.31 HP/RPM (0.23 kW/RPM). Its supplied drivetrain configuration includes 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-552 is specified for high-displacement commercial hulls. It supports propulsion systems requiring a 5.52:1 reduction ratio, subject to confirmation of the engine’s rated torque, 2,400 RPM maximum input speed, SAE 0 or SAE 00 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 D300A

Verify that Advance model D300A-552 is correct for your high-displacement commercial-hull propulsion system. Confirm the 5.52:1 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.

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