调心球轴承有圆柱孔和圆锥孔两种结构，保持架的材质有钢质、合成树脂等。其特点是外圈滚道呈球面形，具有自动调心性，可以补偿不同心度的轴挠度造成的误差，但其内、外圈相对倾斜度不得超过3°
      Adjust heart ball bearings
      Adjust heart ball bearings to have cylinder bore and cone bore two kinds of structure, the material which keeps contains steel quality, synthetic resin...etc..Its characteristics is that the outside turn rolls a way to present a surface of sphere form, have an au to adjust disposition, can compensate the stalk Nao of different heart degree a degree the error margin for result in, but it inside, outside turn opposite inclination degree can not more than 3 °s