Main application
Mining
DTH hammers, tricone bits, RC and drill string for continuous operation in underground and open-pit mining.
BitsLarge-Diameter Bits
654 – 984 NUMA 180
Bits from 24 3/4" to 38 3/4" with NUMA 180 shank.
Large-diameter DTH bits with NUMA 180 shank for water wells.
Features
Large-Diameter Bits
| DIAMETER (IN) | DIAMETER (MM) | SHANK | WEIGHT (KG) |
|---|---|---|---|
| 24 3/4" | 654 | NUMA180 | 720 |
| 26 3/4" | 679 | NUMA180 | 790 |
| 28 3/4" | 730 | NUMA180 | 915 |
| 30 3/4" | 781 | NUMA180 | 1050 |
| 34 3/4" | 883 | NUMA180 | 1180 |
| 38 3/4" | 984 | NUMA180 | 1550 |
Large-Diameter Bits
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| Product | DIAMETER (IN) | DIAMETER (MM) | SHANK | WEIGHT (KG) |
|---|---|---|---|---|
| 301 – 584 NUMA 125 | 11 7/8" – 23" | 301 – 584 | NUMA125 | 190 – 420 |
| 654 – 984 NUMA 180 | 24 3/4" – 38 3/4" | 654 – 984 | NUMA180 | 720 – 1550 |
Applications
- Large-diameter water wells
Highlights
- Available with concave, convex, double gauge and flat faces (see the 'Face types' sheet).
Small-diameter DTH bits compatible with DHD and QL hammers for mining, micropiles, anchoring and water wells.