Advance 120C Heavy Duty Marine Gearbox 2.45:1 Reduction

Description

Configure a commercial drivetrain around a 2.45:1 ratio with the Advance 120C Heavy Duty Marine Gearbox 2.45:1 Reduction. This heavy-duty marine transmission is specified for coastal fishing and workboats, with a maximum input rating of 295 HP (220 kW) at 2,500 RPM and a maximum input speed of 2,500 RPM.

Model 120C-245 has a hydraulic multi-disc clutch, a listed transmission capacity of 0.12 HP/RPM (0.088 kW/RPM), and a maximum propeller-thrust rating of 4,496 lbf (20,000 N). SAE 1, SAE 2, and SAE 3 bell housing standards are listed, allowing buyers to verify the required engine-to-gearbox interface.

Key Features of Advance 120C

• 2.45:1 reduction ratio identifies the listed drivetrain speed-reduction configuration.
• 295 HP (220 kW) maximum input power at 2,500 RPM defines the listed engine-input rating.
• 2,500 RPM maximum input speed identifies the listed input-speed limit.
• 0.12 HP/RPM (0.088 kW/RPM) transmission capacity provides the listed capacity rating.
• Hydraulic multi-disc clutch is specified for the transmission clutch configuration.
• SAE 1, SAE 2, and SAE 3 bell housing standards identify the listed engine-interface options.
• 4,496 lbf (20,000 N) maximum propeller thrust defines the listed thrust rating.
• 8.03-inch (204 mm) center distance identifies the listed drivetrain geometry measurement.
• 2.64-gallon (10-liter) oil capacity provides the listed lubricant quantity.
• 23.0 x 21.2 x 26.0 inch overall dimensions and 485 lb dry weight support installation-space planning.

Fitment and Propulsion Use

The Advance 120C-245 is specified for coastal fishing and workboats. It supports a propulsion configuration that requires a 2.45:1 reduction ratio, with engine input limited to the listed 295 HP at 2,500 RPM rating and maximum 2,500 RPM 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

Verify the exact SAE 1, SAE 2, or SAE 3 bell housing interface and confirm that the engine output, gearbox reduction ratio, 8.03-inch center distance, shaft arrangement, and available installation space match the vessel drivetrain. Use the specified 2.64-gallon oil capacity during service only with the lubricant specified by the gearbox manufacturer. 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 120C

Verify that Advance model 120C-245 is correct for your coastal fishing or workboat application. Confirm the 2.45:1 reduction ratio, 0.12 HP/RPM (0.088 kW/RPM) transmission capacity, 295 HP (220 kW) maximum input power at 2,500 RPM, 2,500 RPM maximum input speed, hydraulic multi-disc clutch, SAE 1/SAE 2/SAE 3 bell housing standards, 4,496 lbf (20,000 N) maximum propeller thrust, 8.03-inch center distance, 2.64-gallon oil capacity, 23.0 x 21.2 x 26.0 inch dimensions, 485 lb dry weight, CCS/ZC (ABS equivalent) classification, and 1-year limited warranty. Confirm compatibility with your engine manufacturer’s documentation before purchase.