MoonRanger’s first functioning wheel module has been assembled. Four of these will drive MoonRanger on the Moon.
The parts include a strut, bearing, seals, hub, wheel and connectors.
The strut is held in bracket with bearing pressed on and seal in place. The cylindrical portion is about the size of a roll of quarters. The bearing is heated to expand it to make the installation possible. Note that the bore is hollow for receiving the actuator that will rotate the wheel.