是最基本的齒輪組，齒輪的齒形是漸開線，由右邊的小齒輪輸入則可以在左邊的大齒輪得到較慢的輸出，其轉速比與尺數成正比。 Spur gear is the most basic gear set. Its tooth form is involutes. Input from the right pinion result in output with a lower velocity on the left gear. The ratio of revolving speed is directly proportional to the number of tooth.
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Spur gear is the most basic gear set. Its tooth form is involutes. Input from the right pinion result in output with a lower velocity on the left gear. The ratio of revolving speed is directly proportional to the number of tooth.