| 摘要 |
A gear, end plate, or the like, is formed from a hard, tough plastic such as polyurethane and is locked onto a supporting shaft by means of a clamp engaging an integral annular hub formed on one side of the gear. The clamp is in the form of a metal band, the ends of which are provided with a nut and screw by means of which the band may be tightened to apply clamping pressure.
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