The Drill Store takes advantages of the latest design technology and manufacturing processes for our roller cutters, wildly used for raise boring, shaft boring and reverse circulating drillings.
The cutters use roller-ball-roller bearing configurations. Premium ball, roller bearings and proprietary grease in creasebearing life and capacity, which leads to the greatly in creased serving life of the cutters. Our Metal face seals use proprietaryo- ring material. These Metal face seals have prove n to in crease bearing life versus our competitors in harsh environments and tough drilling conditions.
Avalibale IADC | Series | Application | Operating Parameters | |
| Rotating Speed(RPM) | Weight on Bit-WOB(lb/in) | ||
| 30 | Very Soft | 70-140 | 1000-4000 |
| 40 | Soft | 70-140 | 1000-4000 |
| 50 | Soft to Medium | 50-140 | 2000-5000 |
| 60 | Medium to Hard | 50-110 | 3000-6000 |
| 70 | Hard | 50-90 | 3500-7500 |
| 80 | Extremely Hard | 40-80 | 5000-8000 |
| Bit Size | ||
| in | mm | Pin Size |
| 6 3/4 | 171 | 3 1/2 |
| 7 7/8 | 200 | 4 1/2 |
| 8 1/2 | 216 | |
| 9 | 229 | |
| 9 7/8 | 251 | 6 5/8 |
| 10 5/8 | 270 | |
| 11 | 279 | |
| 12 1/4 | 311 | |
| 13 3/4 | 350 | |