KAT DRILLING
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Drifting and tunnelling tools include rods, shank adapters, couplings and bits. We offer seven primary thread types: R25, R28, SR28, R32, SR35, and R35. With diameters ranging from 38mm to 127mm, these tools are compatible with button bits, cross bits, and reaming products.
| Bit Type | Gauge Carbide | Front Carbide | Dimensions D | Flushing Hole | ||||
|---|---|---|---|---|---|---|---|---|
| No. | mm | No. | mm | mm | in | Front | Side | |
| Flat Face | 9 | 11 | 8 | 10 | 89 | 3 1/2" | 3 | 1 |
| Flat Face | 9 | 12.7 | 8 | 11 | 93 | 3 11/16" | 3 | 1 |
| Flat Face | 9 | 12.7 | 8 | 12.7 | 102 | 4" | 3 | 1 |
| Drop Center | 8 | 11 | 4/2 | 11/9.5 | 89 | 3 1/2" | 4 | 1 |
| Drop Center | 8 | 12.7 | 4/2 | 12.7/9.5 | 93 | 3 11/16" | 4 | 0 |
| Drop Center | 8 | 14 | 4/3 | 14/12.7 | 115 | 4 1/2" | 4 | 1 |
