A motor having a fluid dynamic bearing generating a fluid dynamic pressure by forming an oil gap between a rotor and a stator such that oil is accommodated in the oil gap, and a first and second air dynamic bearing generating an air dynamic pressure by forming an air gap between the rotor and the stator such that air is introduced into the air gap. The fluid dynamic bearing generates a fluid dynamic pressure by forming an oil gap between an axial hole of a sleeve and a shaft such that oil is accommodated in the oil gap, and the first and second air dynamic bearings generate an air dynamic pressure by forming an air gap between an inner circumferential surface of a hub and an outer circumferential surface of the sleeve and between the inner circumferential surface of the hub and an upper plane surface of the sleeve, respectively.
This application is a divisional application of, and claims the priority to U.S. application Ser. No. 10/982,084, entitled "Motor" filed on Nov. 4, 2004 now U.S. Pat. No. 7,202,583, which claims the priority of Korean Patent Application Nos. 2003-78040, filed on Nov. 5, 2003 and 2004-44510, filed on Jun. 16, 2004, in the Korean Intellectual Property Office, the disclosures of which are incorporated herein by reference.
Priority Data
Nov 05, 2003 [KR] 2003-78040 Jun 16, 2004 [KR] 2004-44510
