Single Use 127mm Casing Advancement System DTH Button Bits for DHD340 Hammer with 125-1090mm Diameter Range
Professional single-use overburden casing drilling ring bit system compatible with DHD340 hammers. Features premium TIMKIN steel construction with German Element Six tungsten carbide, enhanced penetration control, and 40+ years engineering expertise. Available in diameters from 125mm to 1090mm for construction, mining, and geological applications.
Single-use 127mm overburden casing drilling ring bit designed for efficient drilling operations in challenging geological conditions.
Matched hammer: DHD340 | Casing pipe OD: 127mm
- Pilot bit
- Ring bit
- Casing shoe
| Model | External Diameter (mm) | Casing Diameter (OD*ID) | Spline |
|---|---|---|---|
| MK-MRING90 | 125 | 114*102 | MACH33, DHD3.5 |
| MK-MRING115 | 155 | 139*127 | DHD340, SD4, QL4 |
| MK-MRING140 | 188 | 168*153 | DHD350, SD5, QL5 |
| MK-MRING165 | 215 | 194*181 | DHD360, SD6, QL6 |
| MK-MRING190 | 238 | 219*206 | DHD360, SD6, QL6 |
| MK-MRING215 | 276 | 254*240 | DHD380, SD8, QL8 |
| MK-MRING235 | 293 | 273*254 | DHD380, SD8, QL8 |
| MK-MRING240 | 293 | 273*260 | DHD380, SD8, QL8 |
| MK-MRING280 | 345 | 323*303 | SD10 |
| MK-MRING315 | 375 | 355*335 | SD10 |
| MK-MRING365 | 432 | 406*387 | N120, N125, SD12 |
| MK-MRING460 | 530 | 508*483 | N125, N180 |
| MK-MRING510 | 580 | 559*533 | N180 |
| MK-MRING560 | 635 | 610*584 | N180 |
| MK-MRING610 | 695 | 660*632 | N240 |
| MK-MRING660 | 735 | 711*685 | N240 |
| MK-MRING710 | 785 | 762*736 | N240 |
| MK-MRING745 | 838 | 813*780 | N240 |
| MK-MRING810 | 886 | 864*838 | N240, N240S |
| MK-MRING860 | 935 | 914*884 | N240S |
| MK-MRING910 | 980 | 965*935 | N240S |
| MK-MRING960 | 1038 | 1016*986 | N240S, M330 |
| MK-MRING1010 | 1090 | 1067*1041 | M330 |
Required specifications for ordering:
- Casing Tube OD & ID
- Ring Bit Diameter
- Hammer Shank
- Maximal Normal Bit Diameter
- Casings and Casing Shoes Installation Method (thread standard required if threaded)
- Enhanced penetration rate and perpendicularity control
- Capable of handling straight, oblique, and angled holes
- Premium materials: TIMKIN Steel with German Element Six tungsten carbide (YK05, T6)
- Advanced manufacturing: Electron-hydraulic forging and multipurpose furnace heat treatment
- Quality assurance: 40+ years engineering expertise with 100% inspection
Pneumatic down-the-hole (DTH) hammer is a drilling tool using compressed air as power source, suitable for pebble, gravel, and hard rock strata applications in construction, mining, and geological exploration.
Overburden soil is unprocessed fill material containing sand, rocks, clay, and stones, typically lacking organic material found in topsoil.
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