Seal air is injected into the labyrinth seals located at the main motorshaft (top and bottom) and at the pinion shaftdriving 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。
2
Each drivingshaft 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。
3
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.