轴承采用了单列向心推力球轴承，这种轴承具有同时承受较大的轴向荷载和径向荷载的能力。
Bearing a single row thrust ball bearings to the heart, which has at the same time to bear a greater bearing axial load and radial load capacity.
推力球轴承是专为支持轴向力设计的，他们用于轴向力过高，可以由径向轴承传播(的地方)。
Thrust ball bearings are designed for supporting axial forces; they are employed where axial forces are too high to be transmitted by radial bearings.
推力球轴承不能承受径向负荷，极限转速较低。
Thrust ball bearings can bear radial load, lower speed limit.
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