| 摘要 |
PROBLEM TO BE SOLVED: To provide a roller bearing, wherein contact bearing pressure between a roller and an inner ring or a shaft and between the roller and an outer ring is reduced to suppress vibration and noises, elongate a rolling fatigue life, and smooth lubrication between the roller and inner ring or the shaft and between the roller and the outer ring is performed. SOLUTION: The roller bearing comprises a ring-shaped cage 3 having a pair of annular portions 7 and a plurality of circumferential columnar portions 8 tying the annular portions 7 to each other, and having pockets 3a formed between the adjacent columnar portions 8, and the plurality of rollers 2 held in the pockets 3a of the cage 3. The plurality of rollers 2 have rolling contact with an inner ring side peripheral face 6a as the outer peripheral face of the inner ring or the shaft 6 and with an inner peripheral face 1a of the outer ring 1, and the outer ring 1 is fitted to the inner periphery of a housing 5. The annular portions 7 of the cage 3 are functioned as sliding bearings with their inner peripheral faces and their outer peripheral faces having sliding contact with the inner ring side peripheral face 6a and the inner peripheral face 1a of the outer ring 1. Oil paths 11, 12, 13 are provided in the housing 5 and the outer ring 1 for guiding lubricating oil supplied from the outside into the bearing. COPYRIGHT: (C)2008,JPO&INPIT
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