
Advance HC400 Heavy Duty Marine Gearbox 4.94:1 Reduction
Positioned inside commercial fishing vessel engine rooms, the 820 kg Advance HC400-494 marine reduction gear transmission steps down 450 HP at 1800 RPM with a deep 4.94:1 ratio.
- 4.94:1 ratio drives heavy fishing hulls.
- 1800 RPM input matches workboat diesels.
- Thrust bearing absorbs 82000 N loads.
- Internal reservoir holds 23 liters oil.
- Sturdy cast iron case weighs 820kg.
Match fishing or tugboat propulsion with the Advance HC400 Heavy Duty Marine Gearbox 4.94:1 Reduction. This heavy-duty marine transmission is specified for heavy-duty fishing vessels and tugboats, with a 4.94:1 reduction ratio, maximum input power of 450 HP (335 kW) at 1,800 RPM, and a maximum input speed of 1,800 RPM.
Model HC400-494 uses a hydraulic multi-disc clutch and provides a listed transmission capacity of 0.25 HP/RPM (0.19 kW/RPM). Its supplied drivetrain data includes SAE 0 and SAE 1 bell housing standards, 18,434 lbf (82,000 N) maximum propeller thrust, a 10.39-inch (264 mm) center distance, and a 6.07-gallon (23-liter) oil capacity.
Fitment and Propulsion Use
The Advance HC400-494 is specified for heavy-duty fishing vessels and tugboats. It supports propulsion systems requiring a 4.94:1 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.
Before Ordering the Advance HC400
Verify that Advance model HC400-494 is correct for your heavy-duty fishing vessel or tugboat propulsion system. Confirm the 4.94:1 reduction ratio, 0.25 HP/RPM (0.19 kW/RPM) transmission capacity, 450 HP (335 kW) maximum input power at 1,800 RPM, 1,800 RPM maximum input speed, hydraulic multi-disc clutch, SAE 0/SAE 1 bell housing options, 18,434 lbf (82,000 N) maximum propeller thrust, 10.39-inch center distance, 6.07-gallon oil capacity, 25.2 x 39.8 x 35.0 inch dimensions, 1,807 lb dry weight, CCS approval, and 1-year limited warranty. Confirm compatibility with your engine manufacturer’s documentation before purchase.
Product Specifications
Advance HC400 Heavy Duty Marine Transmission - 4.94:1 Ratio
| Brand | Advance |
|---|---|
| Model / SKU | HC400-494 |
| Country of Origin | China |
| US Support / Warranty | 1-Year Limited Warranty |
| Reduction Ratio | 4.94:1 |
| Transmission Capacity | 0.25 HP / RPM (0.19 kW / RPM) |
| Max Input Power | 450 HP (335 kW) @ 1800 RPM |
| Max Input Speed | 1800 RPM |
| Bell Housing Standard | SAE 0 / SAE 1 |
| Clutch Type | Hydraulic Multi-disc |
| Max Propeller Thrust | 18,434 LBF (82,000 N) |
| Center Distance | 10.39" (264 mm) |
| Oil Capacity | 6.07 Gallons (23 Liters) |
| Dry Weight | 1,807 lbs (820 kg) |
| Dimensions (LxWxH) | 25.2" x 39.8" x 35.0" |
| Classification / Certs | CCS Approved |
| Primary Application | Heavy Duty Fishing & Tugboats |
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