| 摘要 |
A rotor assembly for a motor includes a rotor core having an outer surface and a plurality of magnets engaging the outer surface of the rotor core. Each magnet has an inner surface shaped to conform to the outer surface of the rotor core. An aluminum sleeve receives the magnets and core, and the sleeve includes integrally formed ribs extending inwardly from an inner surface of the sleeve to the core. The ribs define cavities therebetween for receiving the magnets. Methods of making the assembly are also disclosed.
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