对于齿圈径向跳动在机标JB305-67的规定是:从轮齿(或齿间)的固定弦到齿轮旋转轴心线距离的最大变动。 日本、德国、法国、英国和国际标准ISO1328-74对齿圈径向跳动规定的定义基本类似:量仪的球或滚棒(或锥体)插入齿槽,或V形测头卡在轮齿上测得齿轮一转变动的总幅度值,测头在齿高中部(或分度圆附近)接触。 美国等一些国家的标准则没有明确限制测头的形状和接触位置。 For ring gear radial runout in the standard JB305-67 provisions: from gear (or interdental) fixed chord to gear rotation axis distance maximum variation. Japan, Germany, France, the United Kingdom and the international standard ISO1328-74 on the definition of ring beating the provisions of the basic similar to: meter ball or roller (or cone) into the alveolar, or V-shaped probe stuck in the gear Measured on the total amplitude of a gear change, the probe in the middle of tooth height (or near the indexing circle) contact. The standards of some countries such as the United States do not explicitly limit the shape and contact position of the probe.