ROTATING MEMBER FOR MOTOR AND BASE ASSEMBLY FOR MOTOR, AND MOTOR INCLUDING THE SAME

摘要

There is provided a rotating member for a motor, the rotating member including: a hub coupled to a shaft system of the motor and rotating together therewith; a main wall portion protruding from one surface of the hub and allowing oil to be sealed between the main wall portion and a sleeve supporting the shaft system; and a pumping portion formed in a lower surface of the main wall portion and generating fluid pressure for preventing a leakage of the oil.