| 摘要 |
PROBLEM TO BE SOLVED: To accurately supply lubricating oil to a sliding contact part between a large collar of an inner ring and the large end face of a roller of a tapered roller bearing. SOLUTION: Partial tapered rollers 3 arranged between raceway surfaces 1a, 2a of an outer ring 1 and the inner ring 2 have spiral oil grooves 5 ranging from small end faces 3b to large end faces 3c of the rolling contact surfaces 3a. Filled lubricating oil held in the oil groove 5 or inflow lubricating oil flowing from the small diameter side of the tapered roller 3 into the bearing to enter the oil groove 5 can thereby be accurately supplied to the sliding contact part with the large collar 2c of the inner ring 2 along the large end face 3c of the tapered roller 3. COPYRIGHT: (C)2007,JPO&INPIT
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