Gear Mesh Frequency

A potential vibration frequency on any machine that contains gears.

It equals to the number of teeth multiplied by the rotational frequency of the gear.

齿轮啮合频率等于该齿轮的转频（转每秒或Hz）乘以它的齿数。相互啮合的两个齿轮的啮合频率是相等的。

例如一个齿轮齿数为17的齿轮转速为6120.09 rpm，与其啮合的齿轮齿数为61，则后者的转速为（17/61）*6120.09 =1705.5 rpm。两者的转频分别为102.0 Hz和28.4 Hz，可以验证，二者的啮合频率就为102.0*17=28.4*61=1734.0 Hz。