| 摘要 |
PROBLEM TO BE SOLVED: To provide a rolling bearing device with a long service life, hardly causing wear and seizure by restraining the leakage of a lubricant filled inside a rolling bearing. SOLUTION: A steam force-feeder is provided with a housing 2, a rotating shaft 1 insert-fitted to the housing 2, and angular ball bearings 4, 5 interposed between the housing 2 and the rotating shaft 1 to rotatably support the housing 2 and the rotating shaft 1. An impeller 13 for force-feeding steam by rotation is mounted to the rotating shaft 1, and an outer ring 4b provided at the angular ball bearing 4 disposed in a closest position to the impeller 13 is provided with a shoulder S1 projecting from the inner peripheral surface of the outer ring 4b, parallel with the rolling direction, at the end part closer to the impeller 13 out of both end parts. The height of the shoulder S1 is set to be high enough to hold the ball 4c even when axial load is applied thereto. |
