Bearing sealing device

A bearing sealing device for sealing a bearing space constituted with an inner member and an outer member which rotate relatively and coaxially, the bearing sealing device comprising:

• a first member fitted onto the inner member, and
• a second member including a core member fitted into the outer member and a seal lip portion having a lip portion and being made of elastic material, the lip portion slidably contacting the first member,
• the first member and the second member being combined,
• the first member having an inner diametrical side cylindrical portion;
• a circular plate portion which extends into an outer diametrical direction from an end portion, being opposite to the bearing space, of the inner diametrical side cylindrical portion;
• and an outer diametrical side cylindrical portion which extends from an outer circumferential side end portion of the circular plate portion along a shaft direction into the bearing space side,
• the core member of the second member having a core member cylindrical portion which is fitted into the outer member;
• and a core member circular plate portion which extends from an end portion on the bearing space side of the core member cylindrical portion into an inner diametrical direction,
• wherein a first labyrinth portion is formed along the shaft direction in a gap between the outer diametrical side cylindrical portion of the first member and the core member cylindrical portion of the second member which are provided so as to face each other in a diametrical direction,
• wherein a second labyrinth portion is formed in such a manner that an end face on the bearing space side in the outer diametrical side cylindrical portion of the first member is formed so as to face the core member circular plate portion of the second member, and
• wherein a diametrical direction length of the end face is equal to or more than 0.6 mm.