| 摘要 |
PROBLEM TO BE SOLVED: To prevent a cage from being damaged in assembling the resin cage to a conical roller bearing including a small collar portion of a diameter larger than an inscribe diameter of a conical roller, on an inner ring.SOLUTION: In a resin cage for a conical roller bearing, a small-diameter annular portion 21 of small diameter and a large-diameter annular portion 22 of large diameter are coaxially disposed and connected by a plurality of pillar portions 23 substantially in an axial direction, each pillar portion has a first pillar portion 24 formed at a side of the small-diameter annular portion 21 and a second pillar portion 25 formed at a side of the large-diameter annular portion 22, a first guide face 27 is formed at both sides in a circumferential direction of the first pillar portion 24, a second guide face 28 is formed at both sides in a circumferential direction of the second pillar portion 25, and a window angle of the first guide face 27 is smaller than a winder angle of the second guide face 28 so that a radial clearance (L) between a conical roller 13 and the first guide face 27 is determined to be larger than a radial clearance (L, L) between the conical roller 13 and the second guide face 28.SELECTED DRAWING: Figure 2 |
