Light Duty Technology Cost Analysis, Power - US Environmental ...

The traction motor rotor assembly (Figure D-11) is built up similarly to the generator
rotor, only larger. It contains sixty-four (64) rare earth magnets that are secured in sixteen
(16) slots along the outer edge of the rotating assembly. Two hundred ninety-two (292)
stamped steel plates are captured between two (2) end plates and aligned on the shaft with
two (2) keyed slots. The magnets, end plates, and stamped steel plates are secured on the
shaft with a large nut.
Figure D-11: Traction Motor Rotor Components
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