Ultra-large-diameter drilling in the 17"–20" / 432–508 mm bit range. Built on the robust SD15 shank standard, delivering extreme impact energy at 1,140 blows per minute through a 528 lb / 240 kg hardened piston.
The HADK-150 is Drill King International’s largest-class DTH hammer, engineered for ultra-large-diameter drilling programs in the 17″–20″ / 432–508 mm bit range. Built on the robust SD15 shank standard, this single-model class delivers extreme impact energy at 1,140 blows per minute through a 528 lb / 240 kg hardened piston — producing more energy per blow than any other hammer in the Drill King lineup.
At 2,769 lbs / 1,256 kg and a 14.80″ / 376 mm outer diameter, the HADK-150 is purpose-built for the demands of deep-diameter mine development, large-scale blast-hole programs, water well construction, and major infrastructure bore work where conventional hammer sizes cannot deliver the required hole diameter or energy output. The 8⅝” API REG PIN top sub connection, 20,000 lb·Ft make-up torque, and 10,000 lb·Ft rotation torque rating reflect the extreme mechanical demands of 15-inch class drilling assemblies.
Premium alloy construction, a precision heat-treated hardened piston, and field-ready Repair & Rebuild kits keep the HADK-150 serviceable on the most remote and demanding sites worldwide.
Heavy-duty shank engineered specifically for the torque and energy demands of 15-inch class drilling assemblies.
A 528 lb / 240 kg hardened piston delivers higher impact energy per blow than any smaller-class hammer in the Drill King range — enabling penetration in the hardest rock formations.
17"–20" / 432–508 mm bit diameters, covering the widest-bore drilling applications in Mining, Water Well, Geothermal, and Infrastructure sectors.
1,140 blows per minute for sustained penetration in large-diameter, high-resistance formations.
20,000 lb·Ft / 27,120 N·m make-up torque and 10,000 lb·Ft / 13,560 N·m rotation torque, matching 15-inch class assemblies and heavy drill strings.
8⅝" API REG PIN top sub connection for heavy-duty large-diameter drill strings in ultra-deep and ultra-wide programs.
Easy, cost-effective field maintenance keeps the HADK-150 operational on the most remote large-diameter drilling programs.
All wear-critical components — wear sleeve, piston retaining ring, bearing, and bit retaining ring — built for extended service life under extreme impact and abrasion loads.
1,140 BPM frequency, 10,000 lb·Ft rotation torque, and a 528 lb hardened piston suit sustained high-energy demands of mine development, shaft sinking support, and wide-pattern blast-hole programs in hard rock.
For deep municipal, industrial, and geothermal programs requiring 17"–20" bore diameters — penetration energy and compressor-matched air consumption to maintain production in abrasive formations.
Extreme energy per blow and consistent 1,140 BPM output enable high-production drilling across large benches in granite, basalt, limestone, and other hard aggregates.
Bridge caissons, piling, culverts, and underground infrastructure requiring large-diameter boreholes — bore diameter, torque capacity, and build quality for demanding civil programs.
| Specification | Value |
|---|---|
| Piston Weight | 528 lbs / 240 kg |
| Application Bit Range | 17" – 20" / 432 – 508 mm |
| Working Pressure | 150–250 PSI / 10.30–17.20 Bar |
| Outer Diameter | 14.80" / 376 mm |
| Hammer Weight | 2,769 lbs / 1,256 kg |
| Effective Length | 74.10" / 1,882 mm |
| Rotation Speed | 5–15 RPM |
| Frequency | 1,140 BPM |
| Top Sub Connection | 8⅝" API REG PIN |
| Make-Up Torque | 20,000 lb·Ft / 27,120 N·m |
| Rotation Torque | 10,000 lb·Ft / 13,560 N·m |
| Shank Connections | SD15 |
| Pressure (PSI) | Pressure (Bar) | CFM | M³/Min |
|---|---|---|---|
| 100 | 6.80 | 1,050 | 30 |
| 150 | 10.30 | 1,350 | 38 |
| 250 | 17.30 | 2,500 | 71 |
| No. | Part Name | Qty | Part Number |
|---|---|---|---|
| 1 | Top Sub | 1 | HPDK15002 |
| 2 | Wear Spacer (Top / Bottom) | 2 | HPDK15004 |
| 3 | Top Sub O-Ring | 1 | See Sealkit |
| 4 | Check Valve | 1 | HPDK15007 |
| 5 | C.V. Spring | 1 | HPDK15009 |
| 6 | Choke Set | 1 | HPDK15008 |
| 7 | Spring Washer | 1 | HPDK15005 |
| 8 | Makeup Ring | 1 | HPDK15006 |
| 9 | Air Distributor | 1 | HPDK15010 |
| 10 | Air Dis. O-Ring | 1 | See Sealkit |
| 11 | Cylinder | 1 | HPDK15012 |
| 12 | Piston | 1 | HPDK15014 |
| 13 | Wear Sleeve | 1 | HPDK15001 |
| 14 | Piston Ret. Ring | 1 | HPDK15017 |
| 15 | Snap Ring | 1 | HPDK15021 |
| 16 | Bit Ret. Ring | 1 | HPDK15018 |
| 17 | Bit Ret. O-Ring | 1 | See Sealkit |
| 18 | Bearing | 1 | HPDK15020 |
| 19 | Chuck | 1 | HPDK15022 |
| — | Sealkit (Items 3, 10, 17) | 1 | HPDK150SEALKIT |
| — | Complete Hammer | — | HADK150 |
Contact Drill King International today for compressor sizing and rotary drive configuration guidance for 15-inch class programs.
Built tough enough for the unpredictability of job sites, our equipment minimizes costly downtime and re-drills.
Every hole counts, and our tools are built to keep penetration rates high even in unpredictable, mixed formations.
Engineered for open-pit and underground alike, our tools lower per-meter drilling costs without sacrificing performance.
Engineered for the rigors of well-site conditions, our hammers and bits extend service life while reducing per-foot drilling costs.
Less downtime, fewer bit changes, more material moved. That's the Drill King difference for quarry operators who can't afford to slow down.
From residential wells to large-scale geothermal fields, our tools are trusted to get the job done right the first time
