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| International Standard Category: Rolling bearings |
GB/T 6445-2021 Rolling bearings—Needle roller bearing track rollers—Boundary dimensions, geometrical product specifications (GPS) and tolerance values
滚动轴承 滚轮滚针轴承 外形尺寸、产品几何技术规范（GPS）和公差值 ;
| Category No.: | 21.100.20 | Valid Status: | valid |
| Issued Organization: | SAMR; SAC | Issued Date: | 2021-12-31 |
| Implemented Date: | 2022-7-1 | Abolished Date: | |
| Superseded Standard.: | Superseded Date: |
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