With the same center as bearing, the spherically formed outer ring raceway can make selfalignment.Their rolling elements linearly come into contact with the raceways of inner ring and outer ring.

• 外圈是以轴承中心点为球心的球面，具有自动调心性，滚动体与内、外圈滚道之间是线性接触，能承受大的径向载荷。