Seal air is injected into the labyrinth seals located at the main motor shaft (top and bottom) and at the pinion shaft driving the motor.

密封空气被注入到主马达轴（顶部和下部）和驱动马达的齿轮轴的迷宫式密封里。

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Each driving shaft on the bogie is driven by a traction motor.

转向架上的每个动轴均由一台牵引电动机驱动。

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And the selected dynamic part takes the direct driving plan with hollow hydraulic motor and has the advantages of light, cheap and small volume in the direction of shaft.

动力头采用中空式液马达直接驱动方案，具有重量轻、成本低、轴间尺寸小等优点。

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