Patent ID: 7625125
Filing Date: 2009-12-01
Classification: F16C,G11B

Abstract:
1. A spindle motor ( 10 ; 110 ) having a fluid dynamic bearing system, having a baseplate ( 12 ), a stationary bearing bush ( 14 ; 114 ) disposed in an opening in the baseplate, a shaft ( 18 ) rotatably supported in an axial bore in the bearing bush by means of the fluid dynamic bearing system, a hub ( 22 ) connected to the shaft, and an electromagnetic drive system ( 30 , 32 ), characterized in that the bearing bush ( 14 ; 114 ) has a flange ( 16 ; 116 ) that is fixed in the opening in the baseplate ( 12 ) and whose outside diameter is substantially larger than the outside diameter of the bearing bush, and that a damping element ( 34 ; 134 ) is disposed at a joint between the flange ( 16 ; 116 ) and the baseplate ( 12 ) and/or the flange ( 116 ) and the bearing bush ( 14 ; 114 ).