Advance MB270A Heavy Duty Marine Gearbox 4.05:1 Reduction

Description

Match passenger-ferry propulsion with the Advance MB270A Heavy Duty Marine Gearbox 4.05:1 Reduction. This heavy-duty marine gearbox is specified for mid-sized tugs and passenger ferries, with a 4.05:1 reduction ratio, maximum input power of 500 HP (373 kW) at 2,500 RPM, and a maximum input speed of 2,500 RPM.

Model MB270A-405 uses a hydraulic multi-disc clutch and provides a listed transmission capacity of 0.20 HP/RPM (0.147 kW/RPM). Its supplied drivetrain configuration includes SAE 0 and SAE 1 bell housing standards, 8,812 lbf (39,200 N) maximum propeller thrust, a 10.63-inch (270 mm) center distance, and a 4.75-gallon (18-liter) oil capacity.

Key Features of Advance MB270A

• 4.05:1 reduction ratio identifies the listed speed-reduction configuration for propulsion-system matching.
• 500 HP (373 kW) maximum input power at 2,500 RPM defines the stated engine-input rating.
• 2,500 RPM maximum input speed identifies the stated operating-speed limit.
• 0.20 HP/RPM (0.147 kW/RPM) transmission capacity provides the listed capacity specification.
• Hydraulic multi-disc clutch identifies the supplied clutch arrangement.
• SAE 0 and SAE 1 bell housing standards define the listed engine-interface options.
• 8,812 lbf (39,200 N) maximum propeller thrust provides the stated thrust rating.
• 10.63-inch (270 mm) center distance supports verification of drivetrain geometry.
• 4.75-gallon (18-liter) oil capacity identifies the stated lubricant fill quantity.
• 23.4 x 31.9 x 34.2 inch dimensions and 1,488 lb dry weight support installation-space and handling planning.

Fitment and Propulsion Use

The Advance MB270A-405 is specified for mid-sized tugs and passenger ferries. It supports propulsion systems requiring a 4.05:1 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 10.63-inch center distance, 23.4 x 31.9 x 34.2 inch housing, and 1,488 lb dry weight. The supplied data lists a 4.75-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 MB270A

Verify that Advance model MB270A-405 is correct for your mid-sized tug or passenger-ferry propulsion system. Confirm the 4.05:1 reduction ratio, 0.20 HP/RPM (0.147 kW/RPM) transmission capacity, 500 HP (373 kW) maximum input power at 2,500 RPM, 2,500 RPM maximum input speed, hydraulic multi-disc clutch, SAE 0/SAE 1 bell housing options, 8,812 lbf (39,200 N) maximum propeller thrust, 10.63-inch center distance, 4.75-gallon oil capacity, 23.4 x 31.9 x 34.2 inch dimensions, 1,488 lb dry weight, CCS/ZC approval, and 1-year limited warranty. Confirm compatibility with your engine manufacturer’s documentation before purchase.