| 型号 | 重量(g) | 主要尺寸(mm) | ||
| 单面密封 | 双面密封 | d | Fw F | |
| NA4900 RS | NA4900.2 RS | 24.5 | 10 | 14 | NA4901 RS | NA4901.2 RS | 27.5 | 12 | 16 |
| NA4902 RS | NA4902.2 RS | 37 | 15 | 20 | NA4903 RS | NA4903.2 RS | 40 | 17 | 22 |
| NA4904 RS | NA4904.2 RS | 80 | 20 | 25 | NA4905 RS | NA4905.2 RS | 89.5 | 25 | 30 |
| NA4906 RS | NA4906.2 RS | 104 | 30 | 35 | NA4907 RS | NA4907.2 RS | 175 | 35 | 42 |
| NA4908 RS | NA4908.2 RS | 252 | 40 | 48 | NA4909 RS | NA4909.2 RS | 290 | 45 | 52 |
| NA4910 RS | NA4910.2 RS | 295 | 50 | 58 | RNA4900 RS | RNA4900.2 RS | 16 | - | 14 |
