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Advance HC138 Heavy Duty Marine Gearbox 3.57:1 Reduction
Advance HC138 Heavy Duty Marine Gearbox HC138-357 delivers a 3.57:1 reduction torque and functions as a heavy-duty hydraulic gear unit for high-torque workboat propulsion.
- Range Data: Absolute 3.57:1 Reduction Ratio.
- High 460HP Precision Span: 345kW Power Capacity.
- Compliance: CCS ZC Approved Standards.
- Capacity: Marine Repower System Records.
- Connection: SAE 2 Housing Position.
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Description
Advance HC138 3.57:1 Gearbox
The Advance HC138 is designed for the rigorous demands of mid-sized workboats, acting as the definitive mechanical solution for a high-capacity physical bridge to torque safety. As a premier Advance marine gearbox, this unit utilizes a 3.57:1 reduction to deliver superior hydrodynamic power for efficient cruising and towing speeds. The hardware architecture focuses on industrial-grade durability, ensuring this Advance power system maintains gear integrity even during continuous full-load engine operation.
Technology-driven mechanical performance provides total protection through a heavy-duty cooling jacket that prevents thermal breakdown of transmission fluid. This Advance marine transmission features a simplified mechanical interface to facilitate rapid maintenance and inspection protocols. Reliability is reinforced by the high-torque internal framework and vibration-resistant mounting points. This unit is the ideal choice for mariners prioritizing professional maritime power and heavy-load drivetrain integrity.
Key Technical Specifications
- 3.57:1 heavy duty reduction ratio.
- HC138 industrial gearbox frame series.
- Oversized hydraulic clutch for torque.
- Heavy duty cast iron housing.
- Designed for continuous offshore operation.
- Integrated transmission fluid cooling system.
- High load bearing assembly design.
Advance HC138 Heavy Duty Marine Transmission - 3.57:1 Ratio
| Brand | Advance |
| Model / SKU | HC138-357 |
| Country of Origin | China |
| US Support / Warranty | 1-Year Limited Warranty |
| Reduction Ratio | 3.57:1 |
| Transmission Capacity | 0.18 HP / RPM (0.138 kW / RPM) |
| Max Input Power | 460 HP (345 kW) @ 2500 RPM |
| Max Input Speed | 2500 RPM |
| Bell Housing Standard | SAE 1 / SAE 2 |
| Clutch Type | Hydraulic Multi-disc |
| Max Propeller Thrust | 7,868 LBF (35,000 N) |
| Center Distance | 8.86" (225 mm) |
| Oil Capacity | 3.17 Gallons (12 Liters) |
| Dry Weight | 837 lbs (380 kg) |
| Dimensions (LxWxH) | 25.5" x 24.0" x 31.0" |
| Classification / Certs | CCS / ZC Approved |
| Primary Application | Marine Repower & High-Torque Workboats |







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