| 摘要 |
PURPOSE: A sprocket is provided to reduce a vibration and a noise thereby minimizing a heat generation and an abrasion. CONSTITUTION: A main body(30) has gear teeth. Flanges(40a,40b) are symmetrically installed in both sides of the main body which is protruded to the outside of the gear teeth. An inclination is formed along the columnar direction of the flange. One or more noise outlet hole(35) are formed on a teeth space(34).
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