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曲轴连杆轴颈的耐磨性在很大程度上取决于表面光洁度、形状和尺寸精度,以及零件的圆柱表面及端面的表层质量。零件的疲劳强度取决于连接轴颈圆柱面和端面的圆角表面的光洁度和质量,以及曲轴轴颈表层残余应力的符号、深度和数值。除此之外,曲轴连杆轴颈-连杆轴瓦副的耐磨性和表面质量取决于精磨(曲轴轴颈加工最后一道工序)磨削的余量值。轴颈-连杆轴瓦摩擦副的使用期限(当精磨时从轴颈表面磨削的余量为50微米,光洁度达到10～11级)比
The wear resistance of crankshaft connecting rod journals depends to a large extent on the surface finish, shape and dimensional accuracy, as well as the surface quality of the cylindrical and face parts of the part. The fatigue strength of a part depends on the finish and quality of the fillet surface connecting the cylindrical surface and the end face of the journal, as well as the sign, depth and value of residual stress on the surface of the journal of the crankshaft. In addition to this, the wear resistance and surface quality of the crankshaft connecting rod journal-connecting rod bearing pair depend on the grinding margin value of the grinding (crankshaft journal last step). Spindle - connecting rod bearing friction period of use (when grinding from the journal surface grinding margin of 50 microns, the finish of 10 to 11 grade) than