8-Inch DTH Water Hammer
Bit Range (216–267 mm)
8.5″–10.5″
Impact Frequency
1,780 bpm
Working Pressure
750–2150 PSI
Drive Type
Fluid (WAI IR380)
Why Drill King?
Straighter Holes
The W80I will drill a straighter hole than a conventional air hammer, reducing hole deviation on the largest-diameter projects.
Hi-Frequency Design
At 1,780 blows per minute, the W80I delivers environmentally friendly, high-frequency drilling for fastest penetration rates.
Lower Operating Costs
Reduced energy consumption versus conventional air hammers means lower operating costs over the life of the tool.
Simple ECO Service Kits
Low-maintenance ECO kits are designed for self-service schedules, keeping the hammer field-serviceable without specialized tooling.
Configurable Wear Sleeve
Choose a smooth wear sleeve or one with integrated stabilizing ribs to minimize hole deviation for your application.
Open or Cased Hole
Customizable to optimize performance in open hole or cased hole projects alike.
Technical Specifications
Full parts list, dimensions, exploded-view diagram, and fluid consumption profile for the HADK-W80I.
WAI IR380
HADK- W80I
Top Sub Connection
4-1/2" API REG PIN
OAL
81.8 in / 2078 mm
OD Range
53.34 or 9.88 in / 210 or 251 mm
Weight w/o Bit
781 lbs / 354 kg
| No | Part Name | Qty | Part Number |
|---|---|---|---|
| 1 | Top Sub | 1 | HPDK-W8002 |
| 2 | Top Sub O-Ring | 1 | See Sealkit |
| 3 | Upper Breakout Ring | 1 | HPDK-W8008 |
| 4 | Check Valve | 1 | HPDK-W8004-Mega8 |
| 5 | C.V. Spring | 1 | HPDK-W8003-Mega8 |
| 6 | Top Filter | 1 | HPDK-W8026-2-Mega8 |
| 7 | C.V. Seat | 1 | HPDK-W8005-Mega8 |
| 8 | Filter Cage | 1 | HPDK-W8027-Mega8 |
| 9 | Bottom Filter | 1 | HPDK-W8026-1-Mega8 |
| 10 | Spacer | 1 | HPDK-W8028 |
| 11 | Valve Cap | 1 | HPDK-W8025 |
| 12 | Valve Cap O-Ring | 1 | See Sealkit |
| 13 | Wear Bearing | 1 | HPDK-W8024 |
| 14 | Valve | 1 | HPDK-W8007 |
| 15 | Valve Housing Seal | 1 | See Sealkit |
| 16 | Valve Housing Seal | 1 | See Sealkit |
| 17 | Valve Housing Seal | 1 | See Sealkit |
| 18 | Valve Housing | 1 | HPDK-W8010 |
| 19 | Inner Tube | 1 | HPDK-W8009 |
| 20 | Piston | 1 | HPDK-W8014 |
| 21 | Cylinder | 1 | HPDK-W8012 |
| 22 | Piston Bushing Seal OD | 1 | See Sealkit |
| 23 | Piston Bearing | 1 | HPDK-W8021 |
| 24 | Piston Bushing Seal ID | 1 | See Sealkit |
| 25 | Piston Bushing Seal ID | 1 | See Sealkit |
| 26 | Piston Bushing Seal ID | 1 | See Sealkit |
| 27 | Piston Bushing Seal ID | 1 | See Sealkit |
| 28 | Piston Bushing Seal ID | 1 | See Sealkit |
| 29 | Piston Bushing Seal ID | 1 | See Sealkit |
| 30 | Piston Bushing Seal ID | 1 | See Sealkit |
| 31 | Piston Bushing Seal ID | 1 | See Sealkit |
| 32 | Wear Sleeve | 1 | HPDK-W8001 |
| 33 | Bit Bearing | 1 | HPDK-W8020 |
| 34 | Piston Bushing Seal ID | 1 | See Sealkit |
| 35 | Bit Ret. Ring | 1 | HPDK-W8018 |
| 36 | Bit Ret. O-Ring | 1 | See Sealkit |
| 37 | Lower B.O. Ring | 1 | HPDK-W8023 |
| 38 | Drive Sub * | 1 | HPDK-W8022 |
| 39 | Cushion Ring ** | 1 | HPDK-W8022DP |
| Sealkit (Items 2, 12, 15-17, 22, 24-31, 34, 36) | 1 | HPDK-W80SEALKIT | |
| Complete Hammer | 1 | HADK-W80I | |
| Top Sub | 4-1/2″ API REG PIN |
| Effective Length (in / mm) | 81.8 / 2078 |
| OD Range (in / mm) | 53.34 or 9.88 / 210 or 251 |
| Weight w/o Bit (lbs / kg) | 781 / 354 |
| Piston Weight (lbs / kg) | 114 / 52 |
| Working Pressure (PSI / Bar) | 750-2150 / 52-148 |
| Application Bit (in / mm) | 8.5-10.5 / 216-267 |
| Feed Force (FT-lbs / M-Kg) | 6770 / 936 |
| Rotation Speed (RPM) | 25-50 |
| Rotation Torque (FT-lbs / M-Kg) | 2250-3700 / 311-512 |
| Frequency (blows / min) | 1780 |
| PSI | Min | Max |
|---|---|---|
| New (Gal/Min) | 75 | 125 |
| Worn (Gal/Min) | 120 | 200 |
Note: Drilling parameters given are guideline only.
Exploded View — HADK-W80I (WAI IR380)
