减速机一般用于低转速大扭矩的传动设备，把电动机、内燃机或其它高速运转的动力通过减速机的输入轴上的齿数少的齿轮啮合输出轴上的大齿轮来达到减速的目的，普通的减速机也会有几对相同原理齿轮达到理想的减速，大小齿轮的齿数之比，就是传动比。

Reducer is generally used in driving equipment of low speed high torque, large gear gear output shaft power motor, internal combustion engine or other high speed running through the reducer input shaft less number of teeth on the reducer to achieve the pure of general reducer will h***e several pairs of the same principle to achieve the ideal effect of gear reducer. The size of the number of teeth of the gear ratio, the tran***ission ratio is.

减速机的主要特点是具有反向自锁功能，可以有较大的减速比，输入轴和输出轴不在同一轴线上，也不在同一平面上。但是一般体积较大，传动效率不高，精度不高。

The main feature of the reducer is a reverse self lock function, which can h***e a larger reduction ratio. The input shaft and output shaft are not on the same axis, nor on the same plane. But the general volume is large, the tran***ission efficiency is not high and the precision is not high.

减速机内部齿轮变位系数选择 正确合理选择变位系数，不但可以凑合中心距，避免齿轮根切，保证满足同心条件，改善齿轮的传动性能和提高其承载能力及提高齿轮的使用寿命，还可以有效控制 侧隙、温升与噪声。

The change coefficient of gear displacement coefficient in the reducer is selected correctly and reasonably. It can not only make the center distance, ***oid the gear cutting, meet the conditi, improve the tran***ission performance of the gear and improve its bearing capacity and improve the service life of the gear, but also can effectively the side gap, temperature rise and noise.