ASAHI经销商-梅州外球面轴承
ASAHI经销商-梅州外球面轴承
一、ASAHI外球面轴承故障诊断的方式及要点
对ASAHI外球面轴承进行状态监测和故障诊断的实用方法是振动分析。必需注意采集的信号准确真实,实用中需注意选择测点的位置和采集方法。要想真实准确反映ASAHI外球面轴承振动状态。因此要在离轴承近的地方安排测点,电机自由端一般有后风扇罩,其测点选择在风扇罩固定螺丝有较好监测效果。另外必需注意对振动信号进行多次采集和分析,综合进行比拟。才干得到准确结论。
二、ASAHI外球面轴承正常运行的特点与实用诊断技巧
ASAHI外球面轴承在其使用过程中表示出很强的规律性,临时生产状态监测中发现。并且重复性非常好。正常优质轴承在开始使用时,振动和噪声均比较小,但频谱有些散乱,幅值都较小,可能是由于制造过程中的一些缺陷,如外表毛刺等所致。
振动和噪声维持一定水平,运动一段时间后。频谱非常单一,仅出现一、二倍频。极少出现三倍工频以上频谱,轴承状态非常稳定,进入稳定工作期。
轴承振动和噪声开始增大,继续运行后进入使用后期。有时出现异音,但振动增大的变化较缓慢,此时,轴承峭度值开始突然达到一定数值。认为,此时轴承即表示为初期故障。
ASAHI经销商-梅州外球面轴承
定期的检查滚针轴承封是维持滚针轴承于状况是很重要的工作。有利的检查时间是安排在定期的停机检查时期。
干净滚针轴承的重要性:保持滚针轴承及润滑的干净是很重要的。检查前需先清洁机器表面,然后拆卸滚针轴承周边的零件。油封是很脆弱的零件,因此需小心的拆卸,切勿过度施力,然后仔细的检查油封及其周边的零件,如果已呈现出不良的症状时,务必更换掉,不良的油封会导致滚针轴承的损坏及导致的设备停机。
检查润滑剂:沾上点润滑剂在两指之间摩擦,若有污染物存在,可感觉出来,或在手背上涂薄层润滑剂 ,然后封光检查。
更换润滑剂:机油润滑的滚针轴承在泻除旧机油后,可能的话,再灌入新鲜的机油并让机器在低转速旋转几分钟。尽可能使机油收集残馀的污染物,然后再泻除这些机油,机油在使用前先经过滤。润滑脂润滑的滚针轴承在更换润滑脂时应避免带有棉质物接触到滚针轴承的任一部位,因为这些残留的纤维可能楔入于件之间并且造成损坏,尤其是小滚针轴承的应用更需注意此问题。
ASAHI经销商-梅州外球面轴承
覆盖暴露的滚针轴承:检查滚针轴承时,千万不要让滚针轴承暴露于污染物或湿气的环境。如果工作中断时,应以油纸塑胶片或类似材料覆盖机器。若在不用拆卸而可能执行检查的情形下清洗无掩蔽的滚针轴承的,要以涂敷用的刷子沾上石油溶剂(white spirit)清洗,再以一块不起毛的布料擦干或用压缩空气吹干(注意不要让滚针轴承组件起动旋转)。以一面小镜子及类似牙医所用的那种探针来检查滚针轴承之轨道面、保持器和珠子。不可清洗加密封盖或防尘的滚针轴承;只擦拭其外部表面即可。 如果滚针轴承呈受损情形时即需更换掉。在定期的停机保养时期内更换滚针轴承远比由于滚针轴承损坏所造成的突然停机之损失来得经济多了。
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ASAHI经销商-梅州外球面轴承
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