| 摘要 |
PROBLEM TO BE SOLVED: To provide a bearing of long service life, high in machining accuracy and reliability, allowed to instill and retain the required amount of lubricant without entrainment of air and prevented from dripping and scattering of the lubricant. SOLUTION: In this bearing B3 formed with at least one sliding part 2, plural stages of diameter enlarged parts 6, 8, 10 are formed on at least one side in the axial direction of the sliding part 2, and the inner diameters of plural stages of diameter enlarged parts 6, 8, 10 are enlarged axially outward from the sliding part 2.
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