| 摘要 |
PROBLEM TO BE SOLVED: To provide a thrust needle roller bearing improved in strength and durability by improving the flowability of lubricating oil, and suppressing the drilling wear of a cage and the differential slip of a needle roller. SOLUTION: This thrust needle roller bearing 1 is provided with a plurality of needle rollers 2 and two annular cages 3, 4. Two annular cages 3, 4 hold a plurality of rollers 2 vertically by roller holding parts 5a, 6a formed at a plurality of pockets 5, 6. The radial length La of the roller holding parts 5a, 6a is made shorter than the length L of the needle roller 2, and the vertical thickness T<SB>1</SB>, T<SB>2</SB>of both radial outer part and inner part are formed thinner than the vertical thickness To of the roller holding parts 5a, 6a. The radial outermost ends and innermost ends of two cages 3, 4 are fixed, and double rows of needle rollers 2a, 2b are mounted to the pockets 5, 6 of the cages. COPYRIGHT: (C)2004,JPO
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