1 引言滚动轴承是机械中的重要零部件之一。滚动轴承的失效,会引起一连串的其它部件损坏,导致灾难性的突然停机,同时会给生产造成巨大的经济损失。要防止事故的发生,就要有行之有效的监测方法。实践证明,对煤矿的重载、低速机械,铁谱监测技术为其故障诊断的首选方法。近年来,迅速发展起来的铁谱技术在实践的检验中证明,它是一种对机械设备状态反应灵敏、可靠,而且方法简单,易于推广的 1 Introduction Rolling bearing is one of the important parts in machinery. The failure of rolling bearings can cause a series of other parts to be damaged, causing a catastrophic sudden stop, while causing huge economic losses to the production. To prevent the occurrence of accidents, there must be effective monitoring methods. Practice has proved that overloading of coal mines, low-speed machinery, ferrography monitoring technology for the fault diagnosis of the preferred method. In recent years, the rapid development of ferrography technology in the practice of testing proved that it is a state of mechanical equipment responsive, reliable, and the method is simple and easy to promote