SPINDLE MOTOR

摘要

PURPOSE: A spindle motor is provided to improve the rotating degree of a sleeve by integrally forming a shaft with a thrust bearing. CONSTITUTION: A sleeve(200) is inserted into an outer peripheral surface of a shaft(100) so that it is supported by a plurality of bearing surfaces. A thrust bearing(300) is integrally formed on the outer peripheral surface of the upper portion of the shaft(100). Bearing surfaces are formed on the upper and lower surfaces of the thrust bearing(300). A hob(400) is mounted to the outer peripheral surface of the sleeve(200). A disc is positioned on the outer peripheral surface of the hob(400). A bush(500) is inserted into the inner side surface of the hob(400) to prevent the leakage of an oil between the thrust bearing and the sleeve(200).