Advance 120C Heavy Duty Marine Gearbox 3.35:1 Reduction

Description

Configure coastal working propulsion with the Advance 120C Heavy Duty Marine Gearbox 3.35:1 Reduction. This heavy-duty marine transmission is specified for coastal fishing vessels and small tugboats, with a 3.35:1 reduction ratio, maximum input power of 295 HP (220 kW) at 2,500 RPM, and a maximum input speed of 2,500 RPM.

Model 120C-335 uses a hydraulic multi-disc clutch and has a listed transmission capacity of 0.12 HP/RPM (0.088 kW/RPM). the listed gearbox configuration includes SAE 1, SAE 2, and SAE 3 bell housing standards, 4,496 lbf (20,000 N) maximum propeller thrust, an 8.03-inch (204 mm) center distance, and a 2.64-gallon (10-liter) oil capacity.

Key Features of Advance 120C

• 3.35:1 reduction ratio identifies the listed speed-reduction configuration for propulsion-system matching.
• 295 HP (220 kW) maximum input power at 2,500 RPM defines the listed engine-input rating.
• 2,500 RPM maximum input speed provides the listed operating-speed limit.
• 0.12 HP/RPM (0.088 kW/RPM) transmission capacity identifies the listed capacity specification.
• Hydraulic multi-disc clutch provides the listed clutch configuration.
• SAE 1, SAE 2, and SAE 3 bell housing standards define the listed engine-interface options.
• 4,496 lbf (20,000 N) maximum propeller thrust provides the listed thrust capacity.
• 8.03-inch (204 mm) center distance supports verification of installed drivetrain geometry.
• 2.64-gallon (10-liter) oil capacity identifies the listed lubricant fill quantity.
• 23.0 x 21.2 x 26.0 inch dimensions and 485 lb dry weight support installation-space planning.

Fitment and Propulsion Use

The Advance 120C-335 is specified for coastal fishing vessels and small tugboats. It supports propulsion systems requiring a 3.35:1 reduction ratio, subject to matching the engine’s rated torque, operating RPM, SAE bell housing interface, propeller-thrust requirement, and complete drivetrain geometry. 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 1, SAE 2, or SAE 3 bell housing interface and confirm engine alignment, mounting structure, shaft configuration, and available clearance before installation. Account for the listed 23.0 x 21.2 x 26.0 inch dimensions, 485 lb dry weight, and 8.03-inch center distance. The transmission has a listed oil capacity of 2.64 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 120C

Verify that Advance model 120C-335 is appropriate for your coastal fishing vessel or small tugboat propulsion system. Confirm the 3.35:1 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 options, 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 approval, and 1-year limited warranty. Confirm compatibility with your engine manufacturer’s documentation before purchase.