| 摘要 |
PROBLEM TO BE SOLVED: To provide a bearing seal capable of restricting immersion of drilling mud from a flange surface into a bearing space while its structure being simple and realizing reduction of a running torque.SOLUTION: This invention relates to a bearing seal 8 installed between a hub-flange side inner race 5 and an outer race 2 in a bearing 1 in which the inner race 5 with a hub flange is supported in an axis-rotatable manner in respect to the outer race 2, the bearing seal comprising: a slinger member 9 made of stainless metallic material including a fitting cylindrical part 10 fitted to a cylindrical part 34 formed concentrically and in a stepped manner at a hub-flange 32 in respect to the inner race 5 and a flange part 11 extended out from one end part 10a of the fitted cylindrical part 10 at inner diameter side along a flange surface 32a of the hub-flange 32 and its inner diameter side extremity end side 11a being non-contacted to the inner race 5; a core 12 fitted to the outer race 2; and a seal lip member 20 made of elastic material that is fixed to the core 12 and having at least one annular seal lip 20a resiliently contacted with the flange part 11 of the slinger member 9. |
