5-Inch DTH Water Hammer
Bit Range (127–153 mm)
5″–6″
Impact Frequency
3,300 bpm
Working Pressure
900–2650 PSI
Drive Type
Fluid (WAI IR350)
Why Drill King?
Straighter Holes
The W50I will drill a straighter hole than a conventional air hammer, reducing hole deviation on demanding projects.
Hi-Frequency Design
At 3,300 blows per minute, the W50I 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-W50I.
WAI IR350
HADK- W50I
Top Sub Connection
3.5" API REG PIN
OAL
63.58 in / 1615 mm
OD Range
5 in / 127 mm
Weight w/o Bit
245 lbs
| No | Part Name | Qty | Part Number |
|---|---|---|---|
| 1 | Top Sub | 1 | HPDK-W5002 |
| 2 | Top Sub O-Ring | 1 | See Sealkit |
| 3 | Filter Cage | 1 | HPDK-W5027 |
| 4 | Filter | 1 | HPDK-W5026 |
| 5 | Check Valve | 1 | HPDK-W5004 |
| 6 | C.V. Spring | 1 | HPDK-W5003 |
| 7 | C.V. Seat | 1 | HPDK-W5005 |
| 8 | Upper Valve Cap | 1 | See Sealkit |
| 9 | Valve Cap | 1 | HPDK-W5025 |
| 10 | Valve Cap O-Ring | 1 | See Sealkit |
| 11 | Wear Bushing | 1 | HPDK-W5024 |
| 12 | Valve | 1 | HPDK-W5007 |
| 13 | Valve Housing | 1 | HPDK-W5010 |
| 14 | Valve Housing Seal | 1 | See Sealkit |
| 15 | Valve Housing Seal | 1 | See Sealkit |
| 16 | Valve Housing Seal | 1 | See Sealkit |
| 17 | Valve Housing Seal | 1 | See Sealkit |
| 18 | Inner Tube | 1 | HPDK-W5009 |
| 19 | Piston | 1 | HPDK-W5014 |
| 20 | Cylinder | 1 | HPDK-W5012 |
| 21 | Piston Bushing Seal OD | 1 | See Sealkit |
| 22 | Piston Bearing | 1 | HPDK-W5021 |
| 23 | Piston Bushing Seal ID | 1 | See Sealkit |
| 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 | Wear Sleeve | 1 | HPDK-W5001 |
| 32 | Bit Bearing | 1 | HPDK-W5020 |
| 33 | Bit Ret. Ring | 1 | HPDK-W5018 |
| 34 | Bit Ret. O-Ring | 1 | See Sealkit |
| 35 | Drive Sub | 1 | HPDK-W5022 |
| Sealkit (Items 2, 8, 10, 14-17, 21, 23-30, 34) | 1 | HPDK-W50SEALKIT | |
| Complete Hammer | 1 | HADK-W50I | |
| Top Sub | 3.5″ API REG PIN |
| OAL (in / mm) | 63.58 / 1615 |
| OD Range (in / mm) | 5 / 127 |
| Weight w/o Bit (lbs / kg) | 245 / — |
| Piston Weight (lbs / kg) | 32 / — |
| Working Pressure (PSI / Bar) | 900-2650 / — |
| Application Bit (in / mm) | 5-6 / 127-153 |
| Feed Force (FT-lbs / M-Kg) | 2750-5500 / — |
| Rotation Speed (RPM) | 47-75 |
| Rotation Torque (FT-lbs / M-Kg) | 1100-2240 / — |
| Frequency (blows / min) | 3300 |
| PSI | Min | Max |
|---|---|---|
| New (Gal/Min) | 48 | 80 |
| Worn (Gal/Min) | 73 | 120 |
Exploded View — HADK-W50I (WAI IR350)
