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Overview
The Twin Disc MG516 rebuilt marine transmission offers unmatched reliability and performance for a variety of marine applications. Engineered to handle 406 to 594 kW (544 to 797 hp), the MG516 is designed for continuous, medium, and intermediate duty conditions, providing exceptional torque transfer, smooth operation, and long-term durability. Ideal for vessels including tugs, workboats, fishing vessels, and cargo boats, the MG516 excels in challenging environments where performance and control are critical.
Twin Disc MG516 Ratios for Sale
Our rebuilt Twin Disc MG516 marine transmissions are offered in the following gear ratios, each meticulously rebuilt, tested, and ready for immediate shipment. These ratios provide vessel operators with the flexibility to match their propulsion systems to the specific operational needs of their vessels, ensuring optimal performance, fuel efficiency, and durability across a wide range of marine environments.
- Twin Disc MG516 Marine Transmission 3.0:1 for sale
This ratio provides a moderate level of thrust and control, making it ideal for vessels that need consistent performance for diverse tasks. Suitable for mid-sized commercial operations, pilot boats, and multipurpose vessels, the 3.0:1 ratio balances speed and torque, offering steady, efficient performance. It’s particularly well-suited for operators who navigate varying water conditions, providing the adaptability to handle light to moderate loads without sacrificing control or fuel economy.
- Twin Disc MG516 Marine Transmission 3.5:1 for sale
Designed for heavier vessels such as cargo boats, utility vessels, and large fishing boats, the 3.5:1 ratio delivers increased torque and enhanced handling. This configuration ensures stable propulsion and powerful thrust, particularly valuable when operating under full load, in rough sea conditions, or when towing. Operators benefit from reliable control and responsive handling, reducing fuel consumption while maintaining consistent speed and thrust.
- Twin Disc MG516 Marine Transmission 4.0:1 for sale
Offering strong performance and high thrust at lower speeds, the 4.0:1 ratio is perfect for trawlers, dredgers, and other heavy-duty vessels. This ratio delivers dependable control and excellent fuel efficiency during prolonged operational periods, making it ideal for vessels that need to maintain precise positioning or sustained low-speed operations. Its design minimizes operational costs while maximizing reliability and performance under demanding conditions.
- Twin Disc MG516 Marine Transmission 4.5:1 for sale
Built for demanding commercial marine operations, including towing, dredging, and salvage work, the 4.5:1 ratio provides exceptional control and high torque, ensuring unmatched pulling power and responsive handling. This configuration is essential for vessels operating in restricted waterways or high-drag environments, delivering the thrust and precision needed to complete complex maneuvers and critical missions effectively.
- Twin Disc MG516 Marine Transmission 5.0:1 for sale
The highest ratio available for the MG516, the 5.0:1 configuration is engineered for tugboats, large workboats, and vessels handling significant loads. It delivers maximum torque, precise low-speed control, and exceptional reliability even under the harshest operational conditions. Operators can expect steady propulsion and smooth maneuvering when pushing or pulling large loads, docking in tight spaces, or operating in adverse conditions. This ratio is the ultimate solution for vessels requiring exceptional control and unmatched power.
Every rebuilt MG516 transmission from Diesel Pro Power is quality-assured, rigorously tested, and ready for installation, ensuring seamless integration with your vessel’s propulsion system. We offer fast global shipping and comprehensive technical expertise, providing you with peace of mind and the support you need to keep your operations running smoothly and reliably.
Key Features and Benefits
- Oil-Controlled Clutch Engagement for precise, smooth gear transitions under varying loads.
- Carburized, Hardened, and Ground Gears ensuring extended operational life and reduced maintenance requirements.
- Emergency Come-Home Feature providing limited propulsion in the event of clutch failure, enhancing operational resilience.
- Flexible Coupling Options, including SAE standard and custom configurations, for broad engine compatibility.
- Robust Design suitable for continuous, intermediate, and medium-duty applications in harsh marine environments.
- Reverse Reduction Capability supporting vessels with dual-shaft or reverse propulsion systems, ensuring versatile operation.
Engine Compatibility for the Twin Disc MG516
The Twin Disc MG516 is designed to integrate with high-output diesel engines delivering up to 797 horsepower, making it an ideal transmission for a wide variety of commercial marine operations. Below are key compatible engines from major manufacturers, ensuring optimal performance, fuel efficiency, and reliability:
Confirmed Compatible Engines
MTU and Others:
- Selected high-output models as per torque and power requirements
Additional Compatible Engines
John Deere:
- 6090AFM85 (up to 500 hp)
- 6135AFM85 (up to 750 hp)
MAN:
- D2676 LE443 (up to 800 hp)
- D2848 LE403 (up to 820 hp)
Scania:
- DI13 070M (up to 750 hp)
- DI16 076M (up to 800 hp)
Volvo Penta:
- D13 MH (up to 800 hp)
Perkins:
- 4000 Series (specific models up to 750 hp)
These engines align well with the MG516’s torque and power handling characteristics and are commonly used in vessels such as fishing boats, pilot vessels, ferries, dredgers, tugs, and offshore support vessels.
Compatibility Considerations
When selecting an engine to pair with the MG516, consider the following:
- Horsepower Range: The engine’s output should fall within the MG516’s capacity (up to 797 hp).
- Torque Output: Ensure the engine’s torque matches the MG516’s handling capabilities.
- SAE Housing Compatibility: Typically SAE #1 housing; verify compatibility or availability of adaptors.
- Duty Cycle: Match the engine’s intended use (continuous, intermediate, or medium duty) with the MG516’s classifications.
- Cooling Requirements: Confirm compatibility with the MG516’s cooling provisions.
For precise compatibility and optimal performance, consult with a marine propulsion specialist or the manufacturers of the engine and transmission. This ensures seamless integration, efficiency, and longevity for your vessel’s propulsion system.
SAE Housing and Installation Details
- SAE Housing: Available with SAE standard housing, adaptable for various engine configurations.
- Certified Installation Prints: Include torque settings, alignment guides, and detailed specifications.
- Weight and Dimensions: Depending on configuration, weight ranges from 600 kg to 1200 kg, requiring certified lifting equipment for installation.
- Cooling Options: Available heat exchanger kits, with both fresh and raw water configurations.
Duty Classification Performance Information
| Reduction Ratio | Continuous/Medium Duty | Intermediate Duty | Max/Min Input Speeds |
| 3.06:1 | 447 kW (600 hp) @ 1800 RPM | 594 kW (797 hp) @ 2300 RPM | 500 min / 2500 max RPM |
| 3.50:1 | 447 kW (600 hp) @ 1800 RPM | 594 kW (797 hp) @ 2300 RPM | 500 min / 2500 max RPM |
| 4.06:1 | 447 kW (600 hp) @ 1800 RPM | 594 kW (797 hp) @ 2300 RPM | 500 min / 2500 max RPM |
| 4.50:1 | 447 kW (600 hp) @ 1800 RPM | 594 kW (797 hp) @ 2300 RPM | 500 min / 2500 max RPM |
| 5.00:1 | 406 kW (544 hp) @ 1800 RPM | 544 kW (730 hp) @ 2300 RPM | 500 min / 2500 max RPM |
Installation and Maintenance
- Use Certified Installation Prints to ensure precise alignment and secure mounting.
- Cooling Systems: Install appropriate heat exchanger kits for continuous or intermediate duty.
- Routine Maintenance: Includes oil changes, filter replacements, clutch plate inspections, and alignment verification.
- Handling: Use certified lifting equipment and ensure structural integrity for installations given the MG516’s weight.
Service Classifications
- Continuous Duty: For vessels like tugs, ferries, and supply boats operating at full power for extended periods.
- Intermediate Duty: For vessels like fishing boats and pilot craft operating under high power with intermittent load reductions.
- Medium Duty: For commercial vessels operating up to 4000 hours/year with up to 80% of full load at full engine power.
Important Notice
The performance data and product information provided are intended as general guidelines. Diesel Pro Power assumes no responsibility for system-related issues, failures, or damage resulting from improper selection, installation, or maintenance of rebuilt transmissions. It is the responsibility of the purchaser and installer to ensure proper integration with the vessel’s engine and compliance with all applicable safety standards and operational guidelines.
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