Patent ID: 7497630

Claim:
A sealed rolling bearing comprising: an outer member formed with at least one outer raceway surface on its inner circumferential surface; an inner member formed with at least one inner raceway surface on its outer circumferential surface, said inner raceway surface with inner raceway surface arranged opposite to the outer raceway surface; rolling elements freely rollably contained between the outer and inner raceway surfaces; and sealing devices arranged in an annular space formed between the outer and inner members, each of the sealing devices has sealing lips of an elastic member, said sealing lips being in sliding contact with a sliding surface of a member of a rotational side, the maximum height Ry or Rmax of the surface roughness of said sliding surface of the member of the rotational side is limited to a value of 2.0 μm or less, and the run-out of the sliding surface, is limited to a value of 30 μm or less.