Patent ID: 8322927

Claim:
A fluid dynamic bearing comprising: at least one first bearing part ( 10 ) and a second bearing part ( 12 ) that are rotatably supported about a rotational axis ( 14 ) with respect to one another and separated from one another by a bearing gap ( 16 ) filled with bearing fluid, associated bearing surfaces of the bearing parts ( 10 , 12 ) forming a first ( 20 ) and a second radial bearing ( 24 ) that are each marked by grooved bearing patterns ( 22 , 24 ) disposed on at least one bearing surface, wherein said grooved bearing patterns extend within the bearing gap, a separator gap ( 28 ) having an enlarged gap distance compared to the bearing gap ( 16 ) being provided between the radial bearings ( 20 , 24 ), characterized in that a transition gap ( 30 ) having an enlarged gap distance compared to the bearing gap is disposed adjoining the bearing gap ( 16 ), the ends of the grooved bearing patterns ( 22 ) of the first radial bearing ( 20 ) adjoining the transition gap ( 30 ) extend axially into the transition gap ( 30 ), a sealing gap ( 18 ) having an enlarged gap distance compared to the bearing gap ( 16 ) is disposed adjoining the transition gap ( 30 ), and the smallest gap distance of the sealing gap ( 18 ) corresponds to the gap distance of the transition gap ( 30 ).