User manual

Table Of Contents
Motor Housing and Drive Wheel
The motor is also connected to and powered from the controller housing. The DC brush
motor and 46:1 gearbox operate in air within the titanium housing. A high energy magnet
attached to the output shaft of the gearbox is magnetically coupled to a high energy magnet
outside the housing. The latter is jacketed in Hasteeloy, a corrosion resistant steel alloy (nickel-
chromium-molybdenum), to protect it from the seawater. The coupling can support more torque
than the motor can provide. The available drive torque exceeds the torque that can be applied by
the mooring cable without slip. The cylindrical magnet is connected to the shaft of the drive
wheel.
The components of the drive wheel are machined from titanium and PBT (polybutylene
terephthalate, a polyester). The portion of the drive surface in contact with the mooring cable is
coated with urethane. The urethane has favorable wear properties and increases the level of
torque that can be applied by the motor without slip. Operators should inspect the urethane for
visible wear after each deployment and have the drive wheel resurfaced or replaced by McLane
when necessary.
Drive Wheel Drive Motor
Housing
Figure 2-17: Motor Housing and Drive Wheel
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