| 摘要 |
PURPOSE:To provide a thrust bearing with a stepped through-hole which is devised to facilitate a burr removing work and reduce the number of accessory parts during use and to provide manufacture thereof. CONSTITUTION:Constitution of a thrust bearing with a stepped through-hole is such that a stepped through-hole 3 having two circular opening parts 4 and 5 with different diameters and coaxially formed through is formed in a disc- shaped body 2, at least one protrusion part 6 is formed on the peripheral wall of the opening part 5 having the through hole with a larger diameter, and the protrusion part 6 has a distance L1 between the tip of the protrusion part 6 and the center of the through-hole 3 being longer than the radius L2 of the opening part 5 having the through-hole 3 with a smaller diameter. |
