| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a rotating bearing that can resolve insufficient strength resulting from voids, and that can suppress incidental expenses including die expenditures, and a device that supports a rotating section in a wind turbine. <P>SOLUTION: In the rotating bearing, track grooves 1a, 1b, 2a, 2b are formed on an inner ring 1 and an outer ring 2, and a plurality of balls 3 and spacers 4 interposed between these balls 3 are provided between the track grooves of the inner and outer ring 1, 2. The rotating bearing is a four-point contact ball bearing wherein the cross-sectional shape of each track groove is formed in a shape such that the balls 3 have a four-point contact with the inner surface of the track grooves of the inner and outer ring 1, 2. The spacers 4 comprise a resin material, and this resin material has a melt viscosity of between 1000 and 2000 Pa s inclusive, at 270°C. <P>COPYRIGHT: (C)2011,JPO&INPIT |
