BEARING SEALING DEVICE

A bearing sealing device including a core member and a seal lip member which is made of elastic material, the core member having a cylindrical portion fitted to an inner diametrical portion of an outer ring of a bearing device, an outer flange portion which extends into an outer diametrical direction from one end of the cylindrical portion on an opposite side to a bearing space side, and an inner flange portion which extends into an inner diametrical direction from another end of the cylindrical portion on a bearing space side, the seal lip member having an axial lip fixed to the core member and projecting into the opposite side to the bearing space side from the inner flange portion. The bearing sealing device is characterized in that the inner flange portion of the core member extends so as to bend into an inner diametrical side through a curve portion from the other end of the cylindrical portion, the curve portion is provided with a protrusion portion made of elastic material and extending into the bearing space side, the protrusion portion functions in such a manner that, when a plurality of bearing sealing devices are concentrically stacked in an axial direction, the protrusion portion abuts on an adjacent bearing sealing device and the bearing sealing device and the adjacent bearing sealing device do not contact each other at a region other than an abutting region of the adjacent bearing sealing device.