Split-Clamp, Shaft-Mounted Marine Permanent-Magnet Water-Cooled Motor Mount

1. Revolutionary ease of installation
Installation can be completed without dismantling the vessel’s main shaft; the split mount “wraps around” the shaft in situ.

Conventional one-piece shaft-clamping motor installations typically take 7–15 days and require shaft-line disassembly, whereas the split type takes only 1–3 days and does not affect vessel operations.

Especially suitable for retrofit projects, solving the industry challenge that “the existing main shaft has flanges at both ends, making it impossible to sleeve on a traditional one-piece motor.”

2. Dramatically improved maintenance and overhaul efficiency
During servicing, the mount can be split simply by loosening bolts—no need to move the shaft line or other equipment.

Faulty parts (e.g., stator windings or permanent magnets) can be replaced individually, significantly reducing maintenance cost and downtime.

The split design fully exposes internal components, improving service accessibility by more than 50%.

3. Dual optimization of space utilization and energy efficiency
Directly uses the available space around the shaft line without occupying additional engine-room space—ideal for space-constrained vessels (e.g., container ships and tankers).

Permanent-magnet motor efficiency reaches 96–97%, over 5% higher than traditional electrically excited motors, delivering significant energy savings.

In shaft-generator mode, surplus main-engine power can be utilized, saving approximately 1.2 tons of fuel per day (data for a 50,000 DWT bulk carrier).

4. Enhanced structural reliability
The split expansion coupling/hub is interference-fitted to the main shaft, providing more uniform torque transmission and reducing vibration and stress concentration.

The water-cooling system keeps motor temperature below 60°C, preventing demagnetization of the permanent magnets and extending service life.

The integrated shaft-hugging structure offers high rigidity and strong resistance to ship motion and impact, suitable for harsh marine operating conditions.

The split-clamp, shaft-hugging marine permanent-magnet water-cooled motor mount/base represents a major technological breakthrough in marine propulsion systems. By combining a split modular design with a high-efficiency water-cooling system, it addresses long-standing pain points of traditional marine motor solutions—difficult installation and maintenance, and high retrofit costs. In particular, for energy-saving and emissions-reduction retrofits, it provides a one-stop solution featuring “no shaft removal, fast installation, and high efficiency,” and has become one of the key pieces of equipment enabling the shipping industry’s green transition.