檢查運行中機器的狀況并預備徹底的檢查計劃已越來越重要，其中又以NSK軸承為注意焦點，因為它是所有機器中重要的旋轉零件，NSK圓柱滾子軸承狀況監測是預防保養中重要的一環，早期的檢測出NSK軸承破壞以避免由于軸承破壞所造成的非計劃性保養期間的設備停機。圓柱滾子軸承下面我就跟大家介紹一下傾聽這種方法。
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圓柱滾子軸承利用聽覺來辨識不規則的運轉是一種很普通的方法，例子如借助電子式聽診器來查覺某一零件的不正常噪音是有經驗操作員使用。軸承若是處于良好的運轉狀況會發出低的嗚嗚聲音，若是發出尖銳的嘶嘶音圓柱滾子軸承、吱吱音及其它不規則的聲音、通常表示軸承處于不良的運轉狀況。
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、瓦面腐蝕：光譜分析發現有色金屬元素濃度異常；鐵譜中出現了許多有色金屬成分的亞微米級磨損顆粒；潤滑油水分超標、酸值超標。
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、軸頸表面拉傷：鐵譜中有鐵系切削磨?；蚝谏趸镱w粒,金屬表面存在回火色。
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、軸頸表面腐蝕：光譜分析發現鐵元素濃度異常,鐵譜中有許多鐵成分的亞微米顆粒,潤滑油水分超標或酸值超標。
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、表面拉傷：鐵譜中發現有切削磨粒,磨粒成分為有色金屬。
4. Surface strain: there are cutting abrasives in the ferrography, and the abrasive grains are non-ferrous metals.
5、瓦背微動磨損：光譜分析發現鐵濃度異常,鐵譜中有許多鐵成分亞微米磨損顆粒,潤滑油水分及酸值異常。
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.
在液體潤滑條件下,滑動表面被潤滑油分開而不發生直接接觸,還可以大大減小摩擦損失和表面磨損,油膜還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.
尖銳的吱吱噪音可能是由于不適當的潤滑所造成的。不適當的NSK軸承間隙也會造成金屬聲。NSK圓柱滾子軸承外圈軌道上的凹痕會引起振動，并造成平順清脆的聲音，若是由于安裝時所造成的敲擊傷痕也會產生噪音，此噪音會隨著NSK軸承轉速的高低而不同。若是有間歇性的噪音，則表示滾動件可能受損，NSK圓柱滾子軸承此聲音是發生在當受損表面被輾壓過時，軸承內若有污染物常會引起嘶嘶音，嚴重的軸承損壞會產生不規則并且巨大的噪音。
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.
軸承損壞固然可藉由聽力來查覺，但是通常此時已經到了NSK軸承必須馬上被更換不可。所以，較好的方法例如使用如電子式狀況監測儀器，NSK圓柱滾子軸承預先疹斷軸承的運轉情況。
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.