8-Inch DTH Hammers
Bit Range
7.87″–10.63″
(200–270 mm)
Impact Frequency
Up to 1,425 bpm
Working Pressure
150–350 PSI
(10-24 BAR)
SHANK SUPPORT
IR380, QL80, SD8
Why Drill King?
Custom Bits
Whether it’s a new gage diameter, face profile, button layout, or something else entirely, Drill King provides quick turnaround custom bits.
High-Impact Frequency
At 1,425 blows per minute, our A50 hammers deliver consistent energy transfer to the bit for faster penetration in hard rock.
Exhaust-Tube-Free Design
The T600UCQ series eliminates the exhaust tube entirely for maximum reliability.
Shank Flexibility
SD10 and NUMA 100 — covers the most common 10” shanks ensuring compatibility with existing equipment.
Maximized Uptime
All Drill King hammers support field servicing through our repair and rebuild kits, so the hammer never leaves the jobsite.
Extended Component Life
Premium alloys and wear-resistant surface treatments extend tool life and reduce operating cost.
Technical Specifications
Select a model to view its full parts list, dimensions, exploded-view diagram, and air consumption profile.
HADK- A800I
Drill King’s 8″ air hammer with IR380 shank. Built for high penetration rates, efficiency, and durability across a variety of applications.
Top Sub Connection
4-1/2" API REG PIN
Eff. Length
51.62 in / 1311 mm
OD
7.16 in / 182 mm
Hammer Weight
405 lbs / 184 kg
| No | Part Name | Qty | Part Number |
|---|---|---|---|
| 1 | Top Sub | 1 | HPDK-A8002 |
| 2 | Top Sub O-Ring | 1 | See Sealkit |
| 3 | Check Valve | 1 | HPDK-A8007 |
| 4 | C.V. Spring | 1 | HPDK-A8009 |
| 5 | Choke Set | 1 | HPDK-A8008 |
| 6 | Press Ring | 1 | HPDK-A8023 |
| 7 | Make Up Ring | 1 | HPDK-A8006 |
| 8 | Air Distributor | 1 | HPDK-A8010-LYT-WGT |
| 9 | Air Dis. O-Ring | 1 | See Sealkit |
| 10 | Cylinder | 1 | HPDK-A8012 |
| 11 | Piston | 1 | HPDK-A8014-LYT-WGT |
| 12 | Wear Sleeve | 1 | HPDK-A8001 |
| 13 | Snap Ring | 2 | HPDK-A8021 |
| 14 | Bit Bearing | 1 | HPDK-A8020 |
| 15 | Bit Ret. Ring | 1 | HPDK-A8018 |
| 16 | Bit Ret. Ring O-Ring | 1 | See Sealkit |
| 17 | Drive Chuck | 1 | HPDK-A8022 |
| Sealkit (Items 2, 9, 16) | 1 | HPDK-A80SEALKIT | |
| Complete Hammer | 1 | HADK-A800I | |
| Top Sub Connection | 4-1/2″ API REG PIN |
| Eff. Length (in / mm) | 51.62 / 1311 |
| OD (in / mm) | 7.16 / 182 |
| Hammer Weight (lbs / kg) | 405 / 184 |
| Piston Weight (lbs / kg) | 84 / 38.1 |
| Working Pressure (PSI / Bar) | 50-350 / 10.3-24.1 |
| Application Bit (in / mm) | 7.87-10.63 / 200-270 |
| Rotation Speed (RPM) | 10-30 |
| Make-Up Torque (lb·Ft / N·m) | 7000 / 9492 |
| Rotation Torque (lb·Ft / N·m) | 1750 / 2373 |
| Frequency (blows / min) | 1425 |
Exploded View — A800I (IR380)
HADK- A80Q
Drill King’s 8″ air hammer with QL80 shank. Built for high penetration rates, efficiency, and durability across a variety of applications.
Top Sub Connection
4-1/2" API REG PIN
Eff. Length
50.87 in / 1292 mm
OD
7.16 in / 182 mm
Hammer Weight
405 lbs / 184 kg
| No | Part Name | Qty | Part Number |
|---|---|---|---|
| 1 | Top Sub | 1 | HPDK-A8002 |
| 2 | Top Sub O-Ring | 1 | HPDK-A8003 |
| 3 | Check Valve | 1 | HPDK-A8007 |
| 4 | C.V. Spring | 1 | HPDK-A8009 |
| 5 | Choke Set | 1 | HPDK-A8008 |
| 6 | Press Ring | 1 | HPDK-A8023 |
| 7 | Make Up Ring | 1 | HPDK-A8006 |
| 8 | Air Distributor | 1 | HPDK-A8010-Q |
| 9 | Air Dis. O-Ring | 1 | HPDK-A8011 |
| 10 | Cylinder | 1 | HPDK-A8012-Q |
| 11 | Piston | 1 | HPDK-A8014-Q |
| 12 | Wear Sleeve | 1 | HPDK-A8001-Q |
| 13 | Snap Ring | 2 | HPDK-A8021 |
| 14 | Bit Bearing | 1 | HPDK-A8020-Q |
| 15 | Bit Ret. Ring | 1 | HPDK-A8018-Q |
| 16 | Bit Ret. Ring O-Ring | 1 | HPDK-A8019 |
| 17 | Drive Sub | 1 | HPDK-A8022-Q |
| Sealkit (Items 2, 9, 16) | 1 | HPDK-A80SEALKIT | |
| Complete Hammer | 1 | HADK-A80Q | |
| Top Sub Connection | 4-1/2″ API REG PIN |
| Eff. Length (in / mm) | 50.87 / 1292 |
| OD (in / mm) | 7.16 / 182 |
| Hammer Weight (lbs / kg) | 405 / 184 |
| Piston Weight (lbs / kg) | 84 / 38 |
| Working Pressure (PSI / Bar) | 150-350 / 10.3-24.1 |
| Application Bit (in / mm) | 7.87-10.63 / 200-270 |
| Rotation Speed (RPM) | 10-30 |
| Make-Up Torque (lb·Ft / N·m) | 7000 / 9492 |
| Rotation Torque (lb·Ft / N·m) | 1750 / 2373 |
| Frequency (blows / min) | 1425 |
Exploded View — A800Q (QL80)
HADK- A800S
Drill King’s 8″ air hammer with SD8 shank. Built for high penetration rates, efficiency, and durability across a variety of applications.
Top Sub Connection
4-1/2" API REG PIN
Eff. Length
50.37 in / 1279 mm
OD
7.16 in / 182 mm
Hammer Weight
405 lbs / 184 kg
| No | Part Name | Qty | Part Number |
|---|---|---|---|
| 1 | Top Sub | 1 | HPDK-A8002 |
| 2 | Top Sub O-Ring | 1 | See Sealkit |
| 3 | Check Valve | 1 | HPDK-A8007 |
| 4 | C.V. Spring | 1 | HPDK-A8009 |
| 5 | Choke Set | 1 | HPDK-A8008 |
| 6 | Press Ring | 1 | HPDK-A8023 |
| 7 | Make Up Ring | 1 | HPDK-A8006 |
| 8 | Air Distributor | 1 | HPDK-A8010-LYT-WGT |
| 9 | Air Dis. O-Ring | 1 | See Sealkit |
| 10 | Cylinder | 1 | HPDK-A8012 |
| 11 | Piston | 1 | HPDK-A8014-S-LYT-WGT |
| 12 | Wear Sleeve | 1 | HPDK-A8001-S |
| 13 | Snap Ring | 1 | HPDK-A8021 |
| 14 | Bit Ret. Ring | 1 | HPDK-A8018-S |
| 15 | Bit Ret. Ring O-Ring | 1 | See Sealkit |
| 16 | Bit Bearing | 1 | HPDK-A8020-S |
| 17 | Drive Sub (Chuck) | 1 | HPDK-A8022-S |
| Sealkit (Items 2, 9, 15) | 1 | HPDK-A80SEALKIT | |
| Complete Hammer | 1 | HADK-A800S | |
| Top Sub Connection | 4-1/2″ API REG PIN |
| Eff. Length (in / mm) | 50.37 / 1279 |
| OD (in / mm) | 7.16 / 182 |
| Hammer Weight (lbs / kg) | 405 / 184 |
| Piston Weight (lbs / kg) | 84 / 38.1 |
| Working Pressure (PSI / Bar) | 150-350 / 10.3-24.1 |
| Application Bit (in / mm) | 7.87-10.63 / 200-270 |
| Rotation Speed (RPM) | 10-30 |
| Make-Up Torque (lb·Ft / N·m) | 7000 / 9492 |
| Rotation Torque (lb·Ft / N·m) | 1750 / 2373 |
| Frequency (blows / min) | 1310 |
Exploded View — A800S (SD8)
HADK- T800UCQ
Drill King’s 8″ exhaust-tube-free air hammer with QL80 shank. Simplified internal design maximizes reliability by removing the need for an exhaust tube.
Top Sub Connection
4-1/2" API REG PIN
Eff. Length
48.6 in / 1235 mm
OD
7.16 in / 182 mm
Hammer Weight
391 lbs / 178 kg
| No | Part Name | Qty | Part Number |
|---|---|---|---|
| 1 | Top Sub | 1 | HPDK-TUC8002 |
| 2 | Top Sub O-Ring | 1 | HPDK-TUC80SEALKIT |
| 3 | Check Valve | 1 | HPDK-TUC8003 |
| 4 | C.V. Spring | 1 | HPDK-TUC8004 |
| 5 | Choke | 1 | HPDK-TUC8008 |
| 6 | Air Distributor | 1 | HPDK-TUC8010 |
| 7 | Cylinder | 1 | HPDK-TUC8012 |
| 8 | Piston | 1 | HPDK-TUC8014 |
| 9 | Case | 1 | HPDK-TUC8001 |
| 10 | Bearing | 1 | HPDK-TUC8020 |
| 11 | Bit Retaining Ring | 1 | HPDK-TUC8018-Q |
| 12 | Bit Ret O-Ring | 1 | HPDK-TUC80SEALKIT |
| 13 | Drive Chuck | 1 | HPDK-TUC8022-Q |
| Sealkit (Items 2, 12) | 1 | HPDK-TUC80SEALKIT | |
| Complete Hammer | 1 | HADK-T800UCQ | |
| Top Sub Connection | 4-1/2″ API REG PIN |
| Eff. Length (in / mm) | 48.6 / 1235 |
| OD (in / mm) | 7.16 / 182 |
| Hammer Weight (lbs / kg) | 391 / 178 |
| Piston Weight (lbs / kg) | 95 / 43 |
| Working Pressure (PSI / Bar) | 150-350 / 10.3-24.1 |
| Application Bit (in / mm) | 7.87-10.63 / 200-270 |
| Rotation Speed (RPM) | 20-30 |
| Make-Up Torque (lb·Ft / N·m) | 7000 / 9492 |
| Rotation Torque (lb·Ft / N·m) | 1753 / 2373 |
| Frequency (blows / min) | 1030 |
Exploded View — T800UCQ (QL80)
