| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fine bearing device for a rail vehicle capable of maintaining the stable permeability performance of a vent valve for a long period. <P>SOLUTION: This bearing device for the rail vehicle is provided with a seal cast 41 that the sealing device 40, 40 provided for both ends of axial direction of a roller bearing is fixed to an outer ring 31a of the roller bearing, and an oil seal 42 that is fit into the seal case 41. The vent valve 50 communicating the bearing inside with the bearing outside of the roller bearing is provided in the end face of the oil seal 42 being fit into the seal case 41 of the sealing device 40. <P>COPYRIGHT: (C)2004,JPO |
