| 摘要 |
The roller bearing is made up of two rolling concentric sleeves (1,3). The sleeves are provided at its two axial ends with radial shoulders (2,4) that face each other. One of these shoulders is provided with a joint (7) which forms a sealing surface with its facing shoulder and the cylindrical rollers roll between these sleeves. The sleeves contain drillings for the introduction of a oil mist and openings for pressure balancing to ventilate the roller. The openings (11,12,14,15) are placed in the radial zone between the roller path (9) and the bore (10) or the peripheral surface of the sleeve (3) concerned of the bearing.
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