Drifting and tunnelling tools include rods, shank adapters, couplings and bits.
We have mainly 11 threads: SR22,SR25,R25, SR28,R28,SR32,R32,SR35,SR38,R38 and T35.
Diameter: 38-127mm,They can be used with button bits, cross bits and reaming products.
Advantages:
Higher penetration rate;
Improved reliability;
Longer service life.
Button bit | Carbide dimension | Dimensions D | Flushing hole | |||||
Gauge | Front | |||||||
[No.] | [mm] | [No.] | [mm] | [mm] | [in] | Front | Side | |
| 5 | 11 | 2 | 9 | 48 | 1 7/8″ | 1 | 1 |
5 | 12.7 | 2 | 9.5 | 51 | 2″ | 1 | 2 | |
| 6 | 9.5 | 3 | 8 | 45 | 1 3/4″ | 3 | 1 |
6 | 9 | 3 | 9 | 48 | 1 7/8″ | 3 | 1 | |
6 | 10 | 3 | 9 | 48 | 1 7/8″ | 3 | 1 | |
6 | 10 | 3 | 9.5 | 51 | 2″ | 3 | 1 | |
6 | 10 | 3 | 10 | 57 | 2 1/4″ | 3 | 1 | |
| 6 | 10 | 3 | 8 | 45 | 1 3/4″ | 3 | 1 |
6 | 10 | 3 | 8 | 48 | 1 7/8″ | 3 | 1 | |
