检查运行中机器的状况并预备彻底的检查计划已越来越重要，其中又以NSK轴承为注意焦点，因为它是所有机器中重要的旋转零件，NSK圆柱滚子轴承状况监测是预防保养中重要的一环，早期的检测出NSK轴承破坏以避免由于轴承破坏所造成的非计划性保养期间的设备停机。圆柱滚子轴承下面我就跟大家介绍一下倾听这种方法。
It is becoming more and more important to check the condition of the machine in operation and prepare thorough inspection plan. The NSK bearing is the focus of attention, because it is the most important rotating part of all machines. Cylindrical roller bearing condition monitoring is an important part of the preventive maintenance. Early detection of NSK bearing damage to avoid bearing breakage. The equipment shutdown during the non scheduled maintenance period caused by the bad. Below the cylindrical roller bearing, I will introduce to you how to listen to this method.
NSK圆柱滚子轴承利用听觉来辨识不规则的运转是一种很普通的方法，例子如借助电子式听诊器来查觉某一零件的不正常噪音是有经验操作员使用。轴承若是处于良好的运转状况会发出低的呜呜声音，若是发出尖锐的嘶嘶音圆柱滚子轴承、吱吱音及其它不规则的声音、通常表示轴承处于不良的运转状况。
Cylindrical roller bearings use hearing to identify irregular operation is a very common method, such as the use of electronic stethoscope to detect abnormal noise of a part is used by experienced operators. If the bearing is in good working condition, it will make a low whine, if it makes a sharp hiss cylindrical roller bearing, squeak and other irregular sound, usually indicating that the bearing is in poor operating condition.
1、瓦面腐蚀：光谱分析发现有色金属元素浓度异常；铁谱中出现了许多有色金属成分的亚微米级磨损颗粒；润滑油水分超标、酸值超标。
1. Tile surface corrosion: Spectral analysis found that the concentration of non-ferrous metal elements was abnormal; ferrography appeared in many non-ferrous metal components of submicron wear particles; lubricating oil moisture exceeded the standard, acid value exceeded the standard.
2、轴颈表面拉伤：铁谱中有铁系切削磨粒或黑色氧化物颗粒,金属表面存在回火色。
2. Surface strain of journal: There are iron series cutting abrasive particles or black oxide particles in ferrography, and tempering color on metal surface.
3、轴颈表面腐蚀：光谱分析发现铁元素浓度异常,铁谱中有许多铁成分的亚微米颗粒,润滑油水分超标或酸值超标。
3. Surface corrosion of journal: Spectral analysis found that the concentration of iron was abnormal, there were many submicron particles of iron composition in the ferrography, the water content of lubricating oil exceeded the standard or acid value exceeded the standard.
4、表面拉伤：铁谱中发现有切削磨粒,磨粒成分为有色金属。
4. Surface strain: there are cutting abrasives in the ferrography, and the abrasive grains are non-ferrous metals.
5、瓦背微动磨损：光谱分析发现铁浓度异常,铁谱中有许多铁成分亚微米磨损颗粒,润滑油水分及酸值异常。
5. Tile back fretting wear: Spectral analysis found that iron concentration is abnormal, there are many iron components in ferrography sub-micron wear particles, lubricating oil moisture and acid value abnormal.
在液体润滑条件下,滑动表面被润滑油分开而不发生直接接触,还可以大大减小摩擦损失和表面磨损,油膜还具有一定的吸振能力
Under the condition of liquid lubrication, the sliding surface is separated by lubricating oil without direct contact, and the friction loss and surface wear can be greatly reduced. The oil film also has a certain vibration absorption capacity.
尖锐的吱吱噪音可能是由于不适当的润滑所造成的。不适当的NSK轴承间隙也会造成金属声。NSK圆柱滚子轴承外圈轨道上的凹痕会引起振动，并造成平顺清脆的声音，若是由于安装时所造成的敲击伤痕也会产生噪音，此噪音会随著NSK轴承转速的高低而不同。若是有间歇性的噪音，则表示滚动件可能受损，NSK圆柱滚子轴承此声音是发生在当受损表面被辗压过时，轴承内若有污染物常会引起嘶嘶音，严重的轴承损坏会产生不规则并且巨大的噪音。
The sharp squeak noise may be due to improper lubrication. Improper NSK bearing clearance can also cause metal noise. The notches on the outer track of cylindrical roller bearings can cause vibration and a smooth and crisp sound. If the notches are caused by striking during installation, the noise will vary with the speed of NSK bearings. If there is intermittent noise, it means that the rolling parts may be damaged, cylindrical roller bearing this sound occurs when the damaged surface is rolled over, if there are contaminants in the bearing often cause hissing, serious bearing damage will produce irregular and loud noise.
轴承损坏固然可藉由听力来查觉，但是通常此时已经到了NSK轴承必须马上被更换不可。所以，较好的方法例如使用如电子式状况监测仪器，NSK圆柱滚子轴承预先疹断轴承的运转情况。
Bearing damage can be detected by hearing, but usually the NSK bearings must be replaced immediately. Therefore, better methods such as the use of electronic condition monitoring instruments, cylindrical roller bearings in advance to break the operation of the bearing.