A turbine with an associated shaftless electric generator includes a rotor and a stator; a mounting plate rotatable with the rotor and a void along a central axis of the rotor. A plurality of blades extend from the mounting plate. Adjustable bearings are interposed between the rotor and the stator, the adjustable bearings being configured to support the mounting plate and the plurality of blades. A threaded adjustor rod located in the void may be manipulated to adjust tension on the adjustable bearings.