| 摘要 |
PROBLEM TO BE SOLVED: To provide a thrust needle roller bearing that can be prevented from getting in or seizing even when used for high-speed rotation. SOLUTION: The thrust needle roller bearing 10 includes a plurality of needle rollers 11 and a cage 12 for retaining the needle rollers 11 in such a way as to allow the rollers to roll freely. The cage 12 has a surface coated with a film 16 of manganese phosphate after being subjected to soft nitriding. COPYRIGHT: (C)2008,JPO&INPIT
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