GB/T 7218-1995 in English

《GB/T 7218-1995滚动轴承 凸缘外圈微型向心球轴承外形尺寸》由TC98（全国滚动轴承标准化技术委员会）归口，主管部门为中国机械工业联合会。
本标准规定了基本外形尺寸符合GB 273.3-88、凸缘尺寸符合GB 7217-87，内径为0.6～10mm、直径系列为7,8,9,0,2,3的带和不带防尘盖的凸缘外圈微型深沟球轴承外形尺寸以及直径系列为8,9的带和不带防尘盖的分离型凸缘外圈微型角接触球轴承外形尺寸。轴承的窄端面倒角极限按GB 5800-86的规定。本标准适用于凸缘外圈微型向心球轴承的设计、制造和检验。

1 Scope
This Standard specifies boundary dimensions of miniature deep groove ball bearings with flanged outer ring with or without dust cap whose basic boundary dimensions meet GB 273.3 - 88, flange dimensions meet GB 7217 - 87, inside diameter is 0.6~10mm and diameter series are 7, 8, 9, 0, 2 and 3 as well as separated type miniature angular contact ball bearings with flanged outer ring with or without dust cap whose diameter series are 8 and 9. Narrow end face chamfering limit of bearing is in accordance with those specified in GB 5800 - 86. this Standard is applicable to the design, fabrication and inspection of miniature radial ball bearings with flanged outer ring.
2 Normative references
The involved provision in the following standard will become the provision by quoting by this standard. When published, all the shown versions are valid. All the standards will be revised, and all parties using this standard shall discuss the possibility of using the latest editions.