| 摘要 |
PROBLEM TO BE SOLVED: To provide a roller bearing which improves lubrication performance and can reduce torque and a calorific value. SOLUTION: After a groove 4 having a depth of not less than 0.02 to 1.0μm is formed on at least one rolling surface out of truck surfaces 1a and 2a and a raceway surface, an oil repellent coating 5 is formed whose contact of an angle becomes not less than 50°for a lubricant. COPYRIGHT: (C)2007,JPO&INPIT
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