| 摘要 |
PROBLEM TO BE SOLVED: To provide a rolling device which can suppress the formation of a smear ring and permits further elongation of a lubrication life.SOLUTION: In a rolling device, a solid lubrication coating film which contains MoS, Sn or Cu on at least a part of raceway surface of a member serving as at least a stationary ring, of an inner member and an outer member, has a thickness of 0.1 to 2.0 μm and has an average surface roughness Ra of 1 μm or less is formed. At the same time, on the surface of the rolling body, the average surface roughness Ra is 0.08 μm or less, and the average surface roughness Ra(x) in the direction parallel to the rolling direction and the average surface roughness Ra(y) in the direction vertical to the rolling direction has a relation of [0.5≤Ra(x)/Ra(y)≤2.0]. |
