Shandong Zibo Boshan Ever-Power Deceleration Machinery Factory teaches you how to calculateHard tooth surface gear reducerGear ratio:
   1. atHard tooth surface gear reducerIn a pair of external gears, its rotation is reversed for you, the small gear rotates to the right and the large gear rotates to the left;
   2. In a pair of internal gears, the two gears run in the same direction;
   3. In a pair of gears, a gear with a small number of teeth is called a small gear, and a gear with a large number of teeth is called a large gear. When the number of teeth is the same, the driving gear is called a small gear, and the driven gear is called a large gear;
   4. atHard tooth surface gear reducerIn a pair of gears, the number of revolutions and the number of teeth are inversely proportional, and the number of revolutions of the small gear is more than that of the large gear. The gear ratio and gear speed ratio of the reducer are as follows:
Gear ratioⅰ= Number of teeth of large gear/Number of teeth of small gear 
Worm gear: gear ratioⅰ= worm gear teeth/worm gears

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