Abstract: Provided is a sintered bearing with oil for a spindle motor. The bearing is characterized in that at least one portion of upper and lower sides of the bearing is denser than other portions of the bearing.

Abstract: A spindle motor is disclosed, wherein the spindle motor is integrally formed by a one side-exposed cylindrical bearing housing by pressing a metal sheet plate to save material costs and to simplify an assembly process of constituent elements, whereby the manufacturing cost can be reduced, and a bearing housing is press-fitted or bonded to a base without caulking process to make a perpendicularity of the bearing housing against the base accurate, whereby a perpendicularity of a rotation shaft against the base is also accurate, and whereby noise and vibration are reduced, and the integral formation of the bearing housing inhibits oil discharged from the bearing from leaking toward a lower surface of the bearing housing, thereby prolonging the life of the product.

Abstract: Provided is a sintered bearing with oil for a spindle motor. The bearing is characterized in that at least one portion of upper and lower sides of the bearing is denser than other portions of the bearing.

Abstract: A spindle motor is disclosed, wherein the spindle motor is integrally formed by a one side-exposed cylindrical bearing housing by pressing a metal sheet plate to save material costs and to simplify an assembly process of constituent elements, whereby the manufacturing cost can be reduced, and a bearing housing is press-fitted or bonded to a base without caulking process to make a perpendicularity of the bearing housing against the base accurate, whereby a perpendicularity of a rotation shaft against the base is also accurate, and whereby noise and vibration are reduced, and the integral formation of the bearing housing inhibits oil discharged from the bearing from leaking toward a lower surface of the beating housing, thereby prolonging the life of the product.

Abstract: A spindle motor is provided. The spindle motor comprises a bearing housing, a bearing, a rotating shaft, a stator around, a rotor, and a first magnet. The bearing is fixed inside the bearing housing. The rotating shaft is rotatably inserted into the bearing. The stator surrounds the bearing housing. The rotor is fixed to the rotating shaft to rotate by interaction thereof with the stator. The first magnet surrounds the rotating shaft to attract the rotating shaft in one side direction.