This standard stipulates that the basic dimensions conform to GB 273.3-88, the flange dimensions conform to GB 7217-87, the inner diameter is 0.6 ~ 10mm, and the diameter series is 7, 8, 9, 0, 2, 3 with and without dust cover Outline dimensions of miniature deep groove ball bearings with flange outer ring and outer dimensions of miniature angular contact ball bearings with separable flange outer ring with and without dust cover for diameter series 8 and 9. The chamfer limit of the narrow end face of the bearing is in accordance with the provisions of GB 5800-86. This standard applies to the design, manufacture and inspection of miniature radial ball bearings with flanged outer rings.
GB/T 7218-1995 history
2013GB/T 7218-2013 Rolling bearings.Miniature radial ball bearings with flanged outer ring.Boundary dimensions
1995GB/T 7218-1995 Rolling bearings. Miniature radial ball bearings with flanged outer ring. Boundary dimensions