Request a Quote

15-Inch DTH Hammer

Drill King’s DK-150 hammer utilizes a massive 528 lb piston to deliver powerful rock-breaking impacts to drill large holes for foundation piles, oil & gas, water well and other drilling applications. The design is built for a SD15 shank and includes a high-flow choke that can bypass an extra 2000 CFM for oversized heads.
15 inch DTH Air Hammer

Bit Range

17″–20″

(432–508 mm)

Impact Frequency

Up to 1, 140 bpm

Working Pressure

150–250 PSI

(10-17 BAR)

SHANK SUPPORT

SD15

15 inch DTH Air Hammer

Why Drill King?

Powerful Impacts

The DK-150 features a massive 528 lb piston that delivers powerful, high-energy blows for reliable penetration in hard rock.

Massive Flushing Capability

The DK-150 features an adjustable choke that enables up to 2000 CFM of additional air to improve cutting evacuation in large holes

Breakout Rings

The DK-150 is assembled with breakout rings ensuring easy disassembly even in high-torque applications

Custom Bits

Whether it’s a new gage diameter, face profile, button layout, or something else entirely, Drill King provides quick turnaround custom bits.

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

HADK- 150

Drill King’s 15″ air hammer with a robust SD15-style shank. Efficient air flow technology and a heavy piston deliver more energy per blow in large diameter drilling.

Top Sub Connection

8-5/8" API REG PIN

Eff. Length

74.10 in / 1882 mm

OD

14.8 in / 376 mm

Hammer Weight

2769 lbs / 1256 kg

Parts List (SD15)
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 1 HADK150
Dimensions & Weights
Top Sub Connection8-5/8″ API REG PIN
Eff. Length (in / mm)74.10 / 1882
OD (in / mm)14.8 / 376
Hammer Weight (lbs / kg)2769 / 1256
Piston Weight (lbs / kg)528 / 240
Drilling Parameters
Working Pressure (PSI / Bar)150-250 / 10.3-17.2
Application Bit (in / mm)17-20 / 432-508
Rotation Speed (RPM)5-15
Make-Up Torque (lb·Ft / N·m)20000 / 27120
Rotation Torque (lb·Ft / N·m)10000 / 13560
Frequency (blows / min)1140
Air Consumption
2500 1875 1250 625 0 1050 CFM 1350 CFM 2500 CFM 29.73 m³/min 38.23 m³/min 70.79 m³/min 100 PSI 150 PSI 250 PSI 6.9 Bar 10.3 Bar 17.2 Bar
Note: Drilling parameters given are guideline only.

Exploded View — HADK-150 (SD15)

Engineered for Excellence in Mansfield, TX

Drill King experts are ready to elevate your drilling performance

A Texas-born, ISO 9001:2015 certified DTH manufacturer supplying high-performance drilling tools to operators worldwide.
From concept to field validation, our U.S.-based engineers design and custom-build tools for the toughest downhole conditions.
CNC precision machining, Just-In-Time scheduling, and private-label options, with most stock items shipping within 24 hours.
ISO 9001-governed inspection and full serialized traceability let us track every part back to its raw material.
Training, documented procedures, routine equipment checks, and proper PPE are built into every stage of production.

Social Responsibility

Committed to responsible manufacturing that protects our people, supports our communities, and respects the environments where our tools work.

Product Inquiry

Request a Quote

Great! We’ve received your information.

Construction

Built tough enough for the unpredictability of job sites, our equipment minimizes costly downtime and re-drills.

Exploration

Every hole counts, and our tools are built to keep penetration rates high even in unpredictable, mixed formations.

Mining

Engineered for open-pit and underground alike, our tools lower per-meter drilling costs without sacrificing performance.

Oil & Gas

Engineered for the rigors of well-site conditions, our hammers and bits extend service life while reducing per-foot drilling costs.

Quarrying

Less downtime, fewer bit changes, more material moved. That's the Drill King difference for quarry operators who can't afford to slow down.

Water Well & Geothermal

From residential wells to large-scale geothermal fields, our tools are trusted to get the job done right the first time