| 国内新型号 | 国内旧型号 | 内径(mm) | 外径(mm) | 宽度(mm) | 轴承型号 | 轴承类型 | 轴承品牌 |
|---|---|---|---|---|---|---|---|
| 7221AC/DB | - | 105 | 190 | 72 | B7221SPB·WB | 角接触球轴承6类 | DKF |
| 7221AC/DB | - | 105 | 190 | 72 | 7221HDB | 角接触球轴承6类 | SNR |
| 7221AC/DB | - | 105 | 190 | 72 | 7221ACD/DB | 角接触球轴承6类 | S |
| 7221AC/DB | - | 105 | 190 | 72 | 7221A5DB | 角接触球轴承6类 | NSK |
| 7221AC/DB | - | 105 | 190 | 72 | 7221DB | 角接触球轴承6类 | NTN |
| 7221AC/DB | - | 105 | 190 | 72 | 7221DB | 角接触球轴承6类 | KOYO |
| 7221AC/DB | - | 105 | 190 | 72 | 2221HDB | 角接触球轴承6类 | BARDEN |
| 7221AC/DB | - | 105 | 190 | 72 | 7221DB | 角接触球轴承6类 | MRC |
| 7221AC/DB | - | 105 | 190 | 72 | 7221DB | 角接触球轴承6类 | NACHI |
| 7221AC/DF | 346221 | 105 | 190 | 72 | 7221DF | 角接触球轴承6类 | MRC |
| 7221AC/DF | 346221 | 105 | 190 | 72 | 7221DF | 角接触球轴承6类 | NACHI |
| 7221AC/DF | 346221 | 105 | 190 | 72 | 7221HDF | 角接触球轴承6类 | SNR |
| 7221AC/DF | 346221 | 105 | 190 | 72 | 7221A5DF | 角接触球轴承6类 | NSK |
| 7221AC/DF | 346221 | 105 | 190 | 72 | B7221SPB·WF | 角接触球轴承6类 | DKF |
| 7221AC/DF | 346221 | 105 | 190 | 72 | 2221HDF | 角接触球轴承6类 | BARDEN |
| 7221AC/DF | 346221 | 105 | 190 | 72 | 7221DF | 角接触球轴承6类 | KOYO |
| 7221AC/DF | 346221 | 105 | 190 | 72 | 7221DF | 角接触球轴承6类 | NTN |
| 7221AC/DF | 346221 | 105 | 190 | 72 | 7221ACD/DF | 角接触球轴承6类 | S |
| 7221AC/DT | 446221 | 105 | 190 | 72 | 7221A5DT | 角接触球轴承6类 | NSK |
| 7221AC/DT | 446221 | 105 | 190 | 72 | 7221DT | 角接触球轴承6类 | NTN |
| 7221AC/DT | 446221 | 105 | 190 | 72 | 7221DT | 角接触球轴承6类 | MRC |
| 7221AC/DT | 446221 | 105 | 190 | 72 | 7221ACD/DT | 角接触球轴承6类 | S |
| 7221AC/DT | 446221 | 105 | 190 | 72 | 7221DT | 角接触球轴承6类 | KOYO |
| 7221AC/DT | 446221 | 105 | 190 | 72 | 7221HDT | 角接触球轴承6类 | SNR |
| 7221AC/DT | 446221 | 105 | 190 | 72 | B7221SPB·WT | 角接触球轴承6类 | DKF |
| 7221AC/DT | 446221 | 105 | 190 | 72 | 6221EDT | 角接触球轴承6类 | GMN |
| 7221AC/DT | 446221 | 105 | 190 | 72 | 7221DT | 角接触球轴承6类 | NACHI |
| 7221AC/DT | 446221 | 105 | 190 | 72 | 221HDT | 角接触球轴承6类 | BARDEN |
| 7221AC/P4 | C46221 | 105 | 190 | 36 | 7221AC/P4 | 未知类型 | INA |
| 7221AC/P4 | C46221 | 105 | 190 | 36 | 7221AC/P4 | 未知类型 | INA |