| BRT2/BRT3支撑环 | ||||
| 支撑环的公称尺寸 | NOK代码 | |||
| d | D | t | BRT2 | BRT3 |
| 8 | 18 | 2 | GN4773-V0 | GN0725-V0 |
| 10 | 20 | 2 | GN4774-V0 | GN0733-V0 |
| 14 | 24 | 2 | GN4775-V0 | GN0745-V0 |
| 15 | 28 | 2 | GN4776-V0 | GN6445-V0 |
| 16 | 26 | 2 | GN4777-V0 | GN0751-V0 |
| 18 | 26 | 2 | GN4778-V0 | GN6377-V0 |
| 18 | 31 | 2 | GN4779-V0 | GN6446-V0 |
| 20 | 28 | 2 | GN4780-V0 | GN6447-V0 |
| 20 | 30 | 2 | GN4781-V0 | GN0762-V0 |
| 20 | 33 | 2 | GN4782-V0 | GN6448-V0 |
