| 摘要 |
According to an exemplary embodiment, the present invention provides a rotatable element, such as a rotor for an electric motor. The exemplary rotatable element has a core with a generally circular cross-section and a channel that extends through the core along an axial centerline of the core. The element also includes a shaft that is secured to the core and that is disposed in the channel. Additionally, the element includes a dielectric layer disposed between the shaft and the core that electrically insulates the core and shaft with respect to one another. Accordingly, the dielectric layer prevents current from flowing between the core and the shaft. In turn, the dielectric layer reduces the development of charge in the shaft.
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