Copenhagen Subsea Equipment
Electric Subsea Thrusters
Gearless rim-driven electric subsea thrusters with hubless propeller, seawater-lubricated bearings and seawater cooling, in four sizes rated to 6,000 m.
Description
Copenhagen Subsea's electric thrusters use a rim-driven design: the motor sits around the rim and there is no central shaft. They have no gears, only one moving part, and no oil or air inside. The bearings are lubricated by the surrounding seawater, which also cools the motor and allows full power for extended periods. The hubless propeller lowers the risk of entanglement, and control is sensorless.
Key features
- Four standard versions: VS, VM, VL and VXL
- Asymmetric configuration for primary-direction main propulsion
- Symmetric configuration for equal thrust both ways, e.g. station-keeping ROVs or tunnel thrusters
- Compact configuration for hull integration
- Depth ratings of 700/3000/6000 m
- 1,000 hours of continuous in-water testing at maximum power with no measured performance loss, and more than 4,000 hours of breakdown-free field operation reported
Applications
ROVs, AUVs, USVs, manned submersibles and hull-cleaning robots.
Specifications
| VS thrust force | Up to 200 N |
|---|---|
| VS propeller diameter | 82.5 mm |
| VS weight in air | 5.3 kg (compact 4.5 kg) |
| VM thrust force | Up to 480 N |
| VM propeller diameter | 131 mm |
| VM weight in air | 7.1 kg asymmetric / 7.2 kg symmetric / 5.7 kg compact |
| VL thrust force | Up to 1000 N |
| VL propeller diameter | 168 mm |
| VL weight in air | 11.5 kg asymmetric / 11.6 kg symmetric / 9.1 kg compact |
| Supply voltage | 24-700 VDC |
| Depth rating | 700/3000/6000 m |
| Max internal motor temperature | 70 °C |
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