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Advance MB270A Heavy Duty Marine Gearbox 4.05:1 Reduction
Advance MB270A-405 Heavy Duty Marine Gearbox MB270A-405 delivers a specialized 4.05:1 reduction ratio as a marine propulsion transmission system for Mid-Sized Tugs & Passenger Ferries field integration.
- Gear Reduction Ratio: Absolute 4.05:1 Reduction Ratio.
- Continuous Power Rating: 500HP (373kW) Power Capacity @ 2500 RPM.
- Marine Class Approval: CCS / ZC Approved.
- Clutch Engagement: Hydraulic Multi-disc Technology.
- Engine Flywheel Housing: SAE 0 / SAE 1 Standard Position.
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Description
Advance MB270A 4.05:1 Gearbox
Engineered for versatile propulsion in coastal service, the Advance MB270A stands as the definitive mechanical solution for a precision physical bridge to drivetrain safety. As a premier Advance marine gearbox, this unit utilizes optimized gear geometry to deliver superior hydrodynamic energy recovery through efficient power transmission. The hardware architecture focuses on technical precision, ensuring this Advance power system maintains a 4.05:1 reduction ratio for optimized propeller thrust during continuous full-load operations.
Technology-driven mechanical performance provides total protection through a hydraulic clutch engagement system designed for smooth shifting under heavy loads. This Advance marine transmission features a rugged cast iron housing to mitigate vibration and thermal stress during long-range coastal transits. Reliability is reinforced by the high-strength alloy internal components and integrated oil cooling circuit. This unit is the premier choice for mariners prioritizing professional maritime power and drivetrain integrity.
Key Technical Specifications
- 4.05:1 precise reduction gear ratio.
- MB270A heavy duty series architecture.
- Hydraulic clutch for smooth engagement.
- Rugged cast iron vibration-damping housing.
- Integrated transmission oil cooler ports.
- High torque transfer efficiency rating.
- Designed for commercial marine propulsion.
Advance MB270A Heavy Duty Marine Gearbox - 4.05:1 Ratio
| Brand | Advance |
| Model / SKU | MB270A-405 |
| Country of Origin | China |
| US Support / Warranty | 1-Year Limited Warranty |
| Reduction Ratio | 4.05:1 |
| Transmission Capacity | 0.20 HP / RPM (0.147 kW / RPM) |
| Max Input Power | 500 HP (373 kW) @ 2500 RPM |
| Max Input Speed | 2500 RPM |
| Bell Housing Standard | SAE 0 / SAE 1 |
| Clutch Type | Hydraulic Multi-disc |
| Max Propeller Thrust | 8,812 LBF (39,200 N) |
| Center Distance | 10.63" (270 mm) |
| Oil Capacity | 4.75 Gallons (18 Liters) |
| Dry Weight | 1,488 lbs (675 kg) |
| Dimensions (LxWxH) | 23.4" x 31.9" x 34.2" |
| Classification / Certs | CCS / ZC Approved |
| Primary Application | Mid-Sized Tugs & Passenger Ferries |







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