| 摘要 |
PROBLEM TO BE SOLVED: To provide a thrust needle bearing having a small amount of wear and a superior flaking-resistant life under severe operating conditions. SOLUTION: In the thrust needle bearing having a rolling body 2 and raceway rings 1A and 1B kept in contact with the rolling body 2, carbide is extracted in a range from 10,000 pieces/mm<2> or more to less than 40,000 pieces/mm<2> at least on the surface layers of the raceway rings.
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