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。适用于矿山、冶金、造纸、建筑等大型机械设备。
      Adjust the heart rolls sub- bearings
      The outside turn takes bearings central point as the surface of sphere of center of sphere, have an au to adjust disposition and roll over a body with inside, outside turn the which roll a way is a line contact, can bear big path to carry a lotus.Be applicable to the large machine equipments of the mineral mountain, metallurgy, deckle, building...etc..