| 摘要 |
A composite sprocket. The sprocket comprises a polymer outer ring mounted to a metallic inner hub. The outer ring has a profile, for example, a toothed profile. The toothed ring comprises a thermoset material such as polyurethane. The hub comprises any suitable metallic or non-metallic material sufficient for transmitting a torque from the ring to a shaft. A retaining ring or adhesives or both are used to lock the ring in place on the hub. Cooperating transverse lugs on the ring and grooves in the hub prevent the ring from rotating when subjected to a torque. A retaining member or members are used to prevent lateral movement of the ring.
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