| 摘要 |
PROBLEM TO BE SOLVED: To provide at low cost a rolling bearing capable of prolonging its rolling fatigue service life even when used under water-mixed lubrication. SOLUTION: At least an outer ring (a fixed ring) 2 is manufactured by applying carbonitriding treatment, quenching treatment, and tempering treatment after machining a raw material made of steel into a predetermined shape. In a surface layer part forming a rolling face 2a, half-power band width of diffraction X ray in martensite crystal is 6.0°or less, hardness is Hv 653 or more, and amount of remaining austenite is less than 2.0 vol.%. COPYRIGHT: (C)2007,JPO&INPIT
|
