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工程机械回转支承由于材质气孔或夹层，滚道淬硬层硬度、深度不均匀等制造质量问题或某些外界原因，造成滚道淬硬层剥落或齿圈断齿，将使设备不能正常工作。对于滚道剥层，首先要作正确判断。出现剥层，一般在外部不易见到。据我们的经验，出现以下情况时，说明滚道有剥层：主?
Construction machinery slewing ring due to material stratum or interlayer, raceway hardened layer of hardness, uneven depth and other manufacturing quality problems or some external reasons, resulting in raceway hardened layer spalling or ring gear broken teeth, will make the device does not work. For roller peeling, we must first make the right judgments. Peeling appears, generally not easy to see outside. According to our experience, when the following conditions occur, there is stripping on the raceway: