| 摘要 |
PROBLEM TO BE SOLVED: To provide a rolling bearing which is excellent in an electric corrosion prevention effect, suitable for a use requiring a low torque of the bearing by using a low-viscosity lubricant, and excellent in an acoustic property and durability.SOLUTION: A rolling bearing is made from an alumina-zirconia-based composite material which includes an alumina component, and an yttria-zirconia component including a zirconia component or yttria of 1.5-5 mol%, at a mass ratio of the alumina component/the yttria-zirconia component=5-30/95-70, and in which alumina-sintered particles, zirconia-sintered particles or yttria-zirconia sintered particles are not larger than 2 μm in the average particle diameter. |
