当fag轴承内圈存在局部故障点时，随着fag轴承内圈旋转，分不到故障点的静态荷载密度随内圈的旋转而周期性的变化，当故障点处于最大荷载方向时，故障点承载的密度最大。因此，fag轴承故障点撞击其他元件表面产生的冲击力幅制与故障点承受荷载密度相关，所以冲击的幅制也会随内圈的旋转而周期性的变化。故障点到安装在壳体上的加速度传感器之间的振动信号的传递路径也随内圈的旋转而周期性的变化。
FAG双列向心球轴承特价型号如下：
| 22215HLK/H315 |
| 22216HLK/H316 |
| 22217HLK/H317 |
| 22218HLK/H318 |
| 22219HLK/H319 |
| 22220HLK/H320 |
| 22222HLK/H322 |
| 22224HLK/H3124 |
| 22226HLK/H3126 |
| 22228HLK/H3128 |
| 22230HLK/H3130 |
| 22232HLK/H3132 |
| 22234HLK/H3134 |
| 22236HLK/H3136 |
| 22238HLK/H3138 |
| 22240HLK/H3140 |
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| 22308HLK/H2308 |
| 22309HLK/H2309 |
| 22310HLK/H2310 |
| 22311HLK/H2311 |
| 22312HLK/H2312 |
| 22313HLK/H2313 |
| 22315HLK/H2315 |
| 22316HLK/H2316 |
| 22317HLK/H2317 |
| 22318HLK/H2318 |
| 22319HLK/H2319 |
| 22320HLK/H2320 |
| 22322HLK/H2322 |
| 22324HLK/H2324 |
| 22326HLK/H2326 |
| 22328HLK/H2328 |
| 22330HLK/H2330 |
| 22332HLK/H2332 |
| 22334HLK/H2334 |
| 22336HLK/H2336 |
| 22338HLK/H2338 |
| 22340HLK/H2340 |
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