| 摘要 |
PROBLEM TO BE SOLVED: To provide a cylindrical roller bearing which uses an integrated machined cage which is light in own weight, reduces a PV value of a pocket part at a loading area, and can suppress the progress of the wear of the cage.SOLUTION: A cylindrical roller bearing 1 comprises: an outer ring 2 having an outer ring raceway surface 2a at an internal peripheral face; an inner ring 3 having an inner ring raceway surface 3a at an external peripheral face; a plurality of cylindrical rollers 4 which are rollingly arranged between the outer ring raceway surface 2a and the inner ring raceway surface 3a; a pair of disc parts 11; and a plurality of column parts 12 which connect the pair of disc parts 11. The cylindrical roller bearing also comprises a metal-made integrated machined cage 10 in which a pocket P is formed of the adjacent column parts 12 and the pair of disc parts 11. An inside-diameter part opening dimension Pi of the pocket P is larger than an outside-diameter part opening dimension Po of the pocket P, and smaller than a width of the pocket P in a pitch-circle diameter P.C.D. position Pc.SELECTED DRAWING: Figure 2 |
