MPL-B580J-SJ72AA

MPL-B580J-SJ72AA机械故障引起的异音

农用电动机正常运行时机械噪声应该是细小的“沙沙”声，没有忽高忽低的变化，没有金属摩擦声，即是轴承正常运转的声音。常见的由机械故障引起的不正常声音有以下几种：

1）“咝咝”声是金属摩擦声？一般是轴承缺油干磨所造成的，应拆开轴承添加润滑脂。

2）“嘎吱嘎吱”声是轴承内滚柱的不规则运动产生的声音，它与轴承的间隙、润滑脂的状态有关。如果电动机只有这种声音而无其他不正常现象，而且在加润滑脂后这种声音立即消失，便不是故障，电动机仍可继续使用。

3）“唧里唧里”声是滚柱或滚珠运转时产生的声音，如无其它杂音，而且在加注润滑脂后声音明显减小或消失，一般不是故障，电动机可继续运行。

4）“咚咚”声有两种可能，一是电动机骤然启动、停止、反接制动等变速情况下，加速度力矩使转子铁心与轴的配合松动造成的。二是传动机构发出的声音，可能是连轴器或皮带轮与轴之间松动、键或键槽磨损所致。

5）“嚓嚓”声是电动机扫膛引起的噪声。

6）周期性的“啪啪”声是皮带接头处不平滑造成的。

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