我厂在设备点检中,使用TB-1型轴承故障检查仪对部分机床电动机的轴承运转情况进行检测。对某些测量出有“危险”的电动机进行拆检发现,大部分电动机的轴承既未损环也不缺少润滑,电动机又无其它故障。经认真分析与研究始知,既非仪器测量不准,也不是电动机本身确有故障,而是我们对该仪器的工作原理、测量范围以及被测对象的结构了解不够而引起的“误诊断”。引起“误诊断”的原因如下:被测量出有“危险”而实际没有故障的电动机,其动力输出端与其它部件的联接方式,大部分采用滑键式、盘状联轴器式或内外齿轮啮合式等。这些联接件与电动 I plant in the equipment inspection, the use of TB-1 bearing fault tester for some machine tool motor bearings to detect the situation. On some of the measured “dangerous” motor disassembly found that most of the motor bearing neither ring nor lack of lubrication, the motor and no other failure. After a careful analysis and study of the beginning of knowledge, neither the measurement of the instrument is not allowed, nor is the motor itself is indeed a fault, but our work on the instrument, the measurement range and the structure of the object to understand the lack of understanding of the “misdiagnosis” . The causes of “misdiagnosis” are as follows: The motor that is measured to be “dangerous” without any problem actually has its power output connected to other components mostly in the form of a sliding key, a disk-shaped coupling, or a gear Meshing and so on. These connectors and electric