Clutch release bearing of an automobile provided with a sealing device on the back side of the raceway

The invention relates to a motor vehicle clutch release bearing comprising a rotating ring (1) and a fixed ring (2). All rotating ring and fixed ring are provided with tracks (3, 4). A raceway is formed between tracks (3,4). A rolling element (5) is arranged in the raceway to guide the relative rotation of the rings. The rotating ring (1) has a bearing surface (8) for actuating the diaphragm of the clutch. The bearing surface extends internally in a substantially radial direction of the front side of the raceway (3) of the rotating race (1). The rotating race (1) has a sealing bearing surface(11) formed on the rear side of the raceway (3). The sealing bearing surface seal extends internally in a substantially radial direction and forms a reduced clearance (J) with a complementary bearing(12) of the fixed ring (2). 本发明涉及一种用于机动车辆的离合器分离轴承，该离合器分离轴承包括转动环(1)和固定环(2)，每个转动环和固定环均设置有轨道(3,4)，在轨道(3,4)之间形成滚道，滚动元件(5)在滚道中布置成引导所述环的相对转动，转动环(1)具有用于致动离合器的膜片的支承表面(8)，所述支承表面在转动环(1)的轨道(3)的前侧上沿大致径向方向向内延伸。所述转动环(1)具有形成在轨道(3)后侧上的密封支承表面(