讯息公告

Grease isolate the O/R、I/R and ball after uniform distribution in the bearing, but under some circumstance electric potential difference would cumulative, the current force to pass O/R and I/R instantaneous when it reach critical value, cause the spark inside the bearing, make the surface of raceway and rolling elements into molten state, it is electrical pitting.

軸承在靜止狀態時，受外力或衝擊之負荷下作往復位移的持續滑動摩擦，導致軌道面與鋼球間油膜無法有效建立(如下圖所示)，造成內外環軌道面和鋼珠表面會出現磨痕，嚴重者會產生異音。

馬達內部凡立水揮散出腐蝕性成份與大氣中濕氣被滑脂吸收後侵蝕軸承而生銹(凡立水＋濕氣＋滑脂)。