| 摘要 |
A hub for removable mounting onto a shaft has an inner sleeve having a first end and a second end, and having a substantially cylindrical inner diameter and having an outer surface having a threaded region and a tapered conical surface located substantially near the first end. An outer hub has an inner surface with a threaded region threadably engagable with the threaded region of the inner hub, and a inner tapered conical surface configured to cam along the tapered outer surface of the inner hub. The hub can be locked at a desired axial location or the shaft by engaging the threads to cause the cam surfaces to constrict the diameter of the first end so it frictionally locks onto the shaft.
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