| 摘要 |
PURPOSE:To prevent generation of electric corrosion of bearing, creeping prevention of outer ring and its slipping off. CONSTITUTION:On an outer dia. face of an outer ring 2 a rubber or synthetic resin made insulation coat layer 5 is provided. On the outer dia. face of the layer 5 expansion correction layers 6 made of resin having a larger linear expansion coefficient than that of the layer 5 are arranged at several positions in the axial direction. Instead of the layer 6 a ring-like protrusion may be used in an integrally molded with the layer 5. It is thus applicable to the position where electric potential difference is generated between a bearing box and a shaft. |
