Mechanical-energy storage unit system

A mechanical-energy storage unit comprising:

• a flywheel including two clamping plates and two or more stacking plates located between the two clamping plates, the two clamping plates being pulled together by one or more fasteners to place a compressive force on the two or more stacking plates;
• a top axle coupled with a top clamping plate of the two clamping plates,
• a bottom axle coupled with a bottom clamping plate of the two clamping plates;
• a top bearing coupled with the top axle;
• a bottom bearing coupled with the bottom axle;
• and
• a support structure coupled with the top bearing and the bottom bearing, the support structure including a base portion and a lid, the lid including a magnetic lift member on a bottom of the lid and a bearing housing on a top of the lid between a motor and the magnetic lift member, the magnetic lift member lifting the flywheel toward the bearing housing, the bearing housing holding the top bearing.

A flywheel assembly comprising:

• an enclosure having a top, a bottom, and an interior cavity, the top including a lid, the lid including magnetic lift member on a bottom of the lid and a bearing housing on a top of the lid between a motor and the magnetic lift member, the magnetic lift member lifting a flywheel toward the bearing housing;
• the flywheel located in the interior cavity of the enclosure;
• a bottom axle coupled with a bottom side of the flywheel;
• a top axle coupled with a top side of the flywheel, the top axle being a separate component than the bottom axle;
• a bottom bearing coupling the bottom axle with the bottom of the enclosure;
• and
• a top bearing coupling the top axle with the top of the enclosure.