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Description
SUPERDRILL could supply lots of grades NUMA DTH Button Bit, they can be chosen according to different applications. Both soft, medium-hard, and hard rocks, Our DTH Bit could have a good performance.
Shank Type: NUMA100, NUMA120, NUMA 125
Bit Diameter: 254mm-508mm
Bit Face: Flat Face, Convex Face, Concave Face, Drop Center, Double Gauge.
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DTH Hammer Bits with NUMA shanks
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| Shank Type | Diameter in mm | Spline NO. | Gauge Buttons | Face Buttons |
| 10" NUMA Shank DTH Bit | 254 | 10 | 12*18mm | 21*16mm |
| 305 | 10 | 12*18mm | 36*16mm | |
| 311 | 10 | 12*18mm | 36*16mm | |
| 318 | 10 | 12*18mm | 38*16mm | |
| 330 | 10 | 14*18mm | 42*16mm | |
| Shank Type | Diameter in mm | Spline NO. | Gauge Buttons | Face Buttons |
| 12" NUMA Shank DTH Bit | 305 | 12 | 12*18mm | 36*16mm |
| 310 | 12 | 12*18mm | 36*16mm | |
| 330 | 12 | 16*18mm | 42*16mm | |
| 355 | 12 | 16*19mm | 48*16mm | |
| 380 | 12 | 16*19mm | 48*16mm | |