| 摘要 |
PURPOSE:To improve close sealing effect by alternately arranging the outward flanges of inside annular bodies installed at an inner-ring extension part and the inward flanges of an outside annular bodies installed at the edge part of an outer ring, keeping the noncontact state, in the bearing for the roll-neck shaft of a rolling mill. CONSTITUTION:The small-collar side edge part of the inner ring 2 of a bearing 1 is extended in the axial direction from the edge of an outer ring 3 and formed to an inner-ring extension part 2a, and the inside annular bodies 4-6 having outward flanges 4a, 5a, and 6a formed are superposed in the axial direction and inserted into the inner-ring extension part 2a. While, outside annular bodies 7 and 8 are arranged onto the edge surface of the outer ring 3 so that inward flanges 7a and 8a are arranged, onto the outer ring 3, alternetely with the outward flanges 4a-6a, and a gap 9 is formed between the inner and the outer ring bodies 4-6 and 7 and 8. Therefore, close sealing effect is obtained, keeping the part between the inner and the outer rings 2 and 3 of the bearing in noncontact state, and the sufficient close sealing effect can be obtained, even if the deflection of shaft center exists. |
