| 摘要 |
In this anti-friction bearing, a rolling element (3) is incorporated in a bearing space between an outer bearing ring (1) and an inner bearing ring (2), a seal device (S) is provided in at least one opening in the axial direction of the bearing space, and the seal device (S) has through-holes (23) that allow the passage of lubricating oil but do not allow the passage of solid foreign substances, the through-holes (23) being formed in a metal ring member (20). Either the outer bearing ring (1) or the inner bearing ring (2) is a stationary-side bearing ring, the other is a rotating-side bearing ring, the ring member (20) is locked to the stationary-side bearing ring, a metal sub-ring member (30) separate from the ring member (20) is secured to the rotating-side bearing ring, and a labyrinth seal structure is formed in the gap between the ring member (20) and the sub-ring member (30). |
