Description:
The MM W20500 is a robust, co-axial, remote mount marine transmission designed for continuous duty in workboat applications. It is fully tested, reliable, and simple to install, complying with ISO 9001 standards. The transmission features reverse reduction with hydraulically actuated multi-disc clutches and is compatible with all engine and propulsion systems, including Fixed Pitch Propellers (FPP).

Features:
- Case hardened and precisely ground gear teeth for durability and smooth operation.
- Output shaft thrust bearing designed for maximum propeller thrust in both directions.
- Smooth hydraulic shifting with a control lever for various operating systems.
- Suitable for twin engine installations with the same ratio and torque capacity in both directions.
- Emergency "get home" capability.
- Robust cast iron casing and free-standing design.
- Includes an oil cooler with fittings and flexible hoses.
- Integrated brackets for easy installation.

Options:
- Engine-matched torsional coupling.
- Propeller shaft flange and coupling bolt sets.
- Classification by major Classification Societies upon request.
- Power Take-Off (PTO), either live or clutchable.
- Trolling valve for slow-speed drive.
- Shaft brake and electric clutch control (24 VDC).

Ratings and Dimensions:
The transmission supports a maximum rated input of 3,828 kW (5,131 hp) and is available for continuous duty applications. It offers various gear ratios with corresponding power capacities at different RPMs, with a maximum RPM of 1800. The dimensions and weight are specified, with a total weight of 5800 kg and an oil capacity of 200 liters.

Output Coupling Dimensions:
Detailed dimensions for output coupling and bolt holes are provided, ensuring compatibility with various installation requirements.