| 摘要 |
In a sealing device for a rolling bearing wherein the clearance between the outer race and an inner race is sealed by a sealing plate fixed to the outer race side, the sealing plate has on its inner periphery an axially extending inner lip 43, a radially extending outer lip 44 and an intermediate lip 45 extending between said two lips and having the tip end thereof divided into two directions. The inner race has on its outer peripheral surface adjacent to the end thereof a concave seal groove 25 having an inner shoulder and an outer shoulder having a diameter smaller than that of the inner shoulder. The inner lip of the sealing plate cooperates with the inner shoulder 23 of the seal groove to form an inner sealing portion between the inner lip and the inner shoulder. The outer lip of the sealing plate cooperates with the outer shoulder 27 of the seal groove to form an outer sealing portion between the outer lip and the outer shoulder. At least one of the bifuracted lips 451, 452 of the intermediate lip contacts the side wall of the seal groove to form an intermediate sealing portion. <IMAGE> |
