Fluid dynamic bearing system

A fluid dynamic bearing system for the rotatable support of an electric motor that comprises,

• a substantially cylindrical bearing bush (10;
• 110;
• 210;
• 310) having a bearing bore,
• a shaft (12;
• 112;
• 212;
• 312) rotatably supported about a rotational axis (40;
• 140;
• 240;
• 340) accommodated in the bearing bore,
• a bearing gap (16;
• 116;
• 216;
• 316) formed between mutually adjacent surfaces of the bearing bush (10;
• 110;
• 210;
• 310) and the shaft (12;
• 112;
• 212;
• 312) that is filled with a bearing fluid and extends in an axial direction parallel to the rotational axis (40;
• 140;
• 240;
• 340),
• at least one radial bearing (18;
• 118;
• 218;
• 318;
• 20;
• 220;
• 320) that is disposed along the bearing gap (16;
• 116;
• 216;
• 316) and formed by bearing surfaces of the bearing bush (10;
• 110;
• 210;
• 310) and the shaft (12;
• 112;
• 212;
• 312), and
• at least one axial bearing (26;
• 126;
• 226;
• 326) that is formed as a magnetic bearing.