DYNAMIC PRESSURE BEARING MOTOR

摘要

PROBLEM TO BE SOLVED: To provide a dynamic pressure bearing motor in which a load- resistance of a thrust bearing can be improved and a starting current can be reduced. SOLUTION: A protruding part 8a which protrudes toward a tip of a retaining shaft 2a and narrows a channel of hydraulic fluid, and a throttle hole 9 for passing the hydraulic fluid which flows in the thrust bearing and reaches the protruding part 8a are installed in a closing part 16a of a motor rotor 3a, thereby generating an levitation force toward a thrust direction, in the rotor 3a.