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Compact underwater dc drives from maxon

07 February 2016

Electrically actuated underwater vehicles, like remote operated vehicles and autonomous unmanned vehicles, require drives that are lightweight, efficient and compact.

maxon's new underwater thrusters and actuators are oil filled and range in size from 16 to 42mm diameter. The core element is a motor-gear combination based on a brushless dc motor and a planetary gearhead. These underwater drives are designed with a high quality polymer housing to ensure protection against the harsh underwater elements.

The MT-30 thruster is pressure tolerant down to 6,000m with oil compensation, while the propeller is modified for low noise operation.

Using maxon motors slimline 48V brushless dc motors, the thruster can achieve 10kg continual bollard thrust from a diameter of only 30mm. The small diameter helps to reduce water disturbance over the thruster body to maximise efficiency.

Two power levels - 120W and 180W - are available from the oil filled 22mm motor and 22mm planetary gearhead and the complete thruster has a mass of only 750g. The propeller has a diameter of 70mm contained in a fluted shroud of 82mm.

maxon motor is able to modify the thruster assembly to meet customers' specific requirements.

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