主要是承受载荷方向不一样，向心轴承是主要承受较大的径向载荷和一部分较小的轴向负荷，推力是承受较大的轴向载荷和较小的径向负荷。

Bear the load direction is mainly not the same, the main bearings to the heart to bear a larger part of a smaller radial load and axial load to bear large axial thrust loads and a smaller radial load.

youdao