| Boundary dimensions(mm) | ||||
| D | B | rs min | ||
| 7909CDT | 45 | 68 | 24 | 0.6 | 7910CDT | 50 | 72 | 24 | 0.6 |
| 7911CDT | 55 | 80 | 26 | 1 | 7912CDT | 60 | 85 | 26 | 1 |
| 7913CDT | 65 | 90 | 26 | 1 | 7914CDT | 70 | 100 | 32 | 1 |
| 7915CDT | 75 | 105 | 32 | 1 | 7916CDT | 80 | 110 | 32 | 1 |
| 7917CDT | 85 | 120 | 36 | 1.1 | 7918CDT | 90 | 125 | 36 | 1.1 |
| 7919CDT | 95 | 130 | 36 | 1.1 | 7920CDT | 100 | 140 | 40 | 1.1 |
