| 轴承型号 | 品牌 | 系列 | 内径(mm) | 外径(mm) | 厚度(mm) |
| NN4921MBKR | NSK | 内径圆锥孔式样 | |||
| 71921CDF | NSK | 角接触球轴承 | |||
| NNU4921B/SPW33 | SKF | SKF高精密双列圆柱滚子轴承 | |||
| NNU4921MBE44 | NSK | 内径圆柱孔式样 | |||
| NNU4921-S-K-M-SP | FAG | NNU49..-S-K-M-SP | |||
| NN4921 | NTN | NN型圆柱孔 | |||
| 7921CDFFY | KOYO | 与切制保持架 | |||
| 71921C/DF | FAG | 角接触球轴承 | |||
| NNU4921MBKR | NSK | 内径圆锥孔式样 | |||
| NNU4921BK/SPW33 | SKF"} | SKF高精密双列圆柱滚子轴承 |