Product model: NUMA125
Application:Water well drilling,Foundation
Thread:HEX
PRODUCT DETAILS
| Model | Thread connection | Quter diameter(mm) | Rec.hole size(mm) | Shank style | Foot valve | Length without bit(mm) | Weight without bit(kg) | Working pressure(bar) |
| 14" | ||||||||
| TH12HN | HEX | 330 | 400-550 | NUMA125 | with | 2235 | 950 | 17-24 |
DTH BIT SHANK WITH --NUMA125
For water well,depep hole well,oil and gas open hole drilling
For foundation and piling drilling
High drilling speed
low air consumption
Long service life
| ITEM DESCRIPTION | |
| NO | PART LIST | |
| 1 | TOP SUB(With insert carbides) | |
| 2 | STEEL RING | |
| 3 | TOP SUB RING | |
| 4 | CHECK VALVE | |
| 5 | SPRING | |
| 6 | SHOCK RING | |
| 7 | CHECK VALVE GUIDE | |
| 8 | O RING | |
| 9 | AIR DISTRIBUTOR SEAT | |
| 10 | PRESSURE BEARING RING | |
| 11 | AIR DISTRIBUTOR TUBE | |
| 12 | PISTON | |
| 13 | OUTER CYLNDER | |
| 14 | O RING | |
| 15 | BIT RETAINING RING | |
| 16 | STEEL RING | |
| 17 | CHUCK SLEEVE | |
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