在使用过的回转支承道面中部,常常出现一道网状色带,有的轻微,有的网状纹深达0.3毫米左右。我们将深度可忽略不计网状纹称为正常磨损,而将深度具有手感的网状纹称为不正常磨损。已经产生不正常磨损的回转支承如还继续使用就会引起激剧磨损,缩短使用寿命。众所周知,为了克服滚柱与滚道面产生弦弧干涉,滚柱的轴向尺寸就设计得比径向尺寸小。因此,人们会认为滚柱的轴向不受力。其 In the middle of the rotary support surface used, there is often a mesh ribbon, and some slight, some reticular pattern depth of about 0.3 mm. We refer to the depth as a negligible mesh pattern as normal wear, whereas the depth-textured mesh pattern is referred to as abnormal wear. Slewing bearings that have been worn out of normal wear and tear, if they continue to be used, can cause fatiguing wear and shorten the service life. As we all know, in order to overcome the roller and raceway surface to produce chord interference, the axial size of the roller is designed to be smaller than the radial size. Therefore, one would think that the axial direction of the roller is not affected. its