| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a rolling bearing from which leakage of oil content of lubricant can be suppressed in high-temperature environment.SOLUTION: A rolling bearing 1 includes: an outer ring member 2 having an outer ring raceway 2a in an inner circumference surface; an inner ring 3 which has in the outer circumference center, an inner ring raceway 3a facing the outer ring raceway 2a and which has seal sliding surfaces 3e at the outer circumference both sides ends; a plurality of rolling element 4 arranged so as to freely roll between the outer ring raceway 2a and the inner ring raceway 3a; and two seals 6 which are fixed to the inner circumference both sides ends of the outer ring 2 and each of which has in the inner circumference, a lip 6c in slide contact with the seal sliding surface 3e of the inner ring 3. Between the inner ring raceway 3a and the seal sliding surface 3e of the outer circumference of the inner ring 3, the rolling bearing 1 has an annular groove 3d whose cross section has a triangle form and whose side surface 3f on the inner ring raceway side is an incline surface.</p> |
