问:滚动轴承车轴轴颈后部为什么允许有三种型式?怎样选用?如何作图? 答:这要先从车轴和轴承的设计说起。为降低轴颈弯矩,从轴颈中心到轴肩的距离越小越好;为提高轴承寿命,轴承宽度越大越好。车轴承受对称弯曲循环载荷,轴颈后部弯曲,在运转中表层金属不断拉伸、压缩 Q: Why is the back of the roller bearing journal shaft allows three types? How to choose? How to map? A: This must first talk about the design of the axle and bearing. In order to reduce the journal bending moment, the distance from the journal center to the shoulder should be as small as possible. In order to improve the bearing life, the bigger the bearing width, the better. Axle load by the symmetric bending cycle, bending the back of the journal, the surface of the metal in the operation of continuous stretching, compression