Numa Offers Largest Range of DTH Hammers & Bits

THOMPSON, CONNECTICUT, USA: Numa, the world’s leading drilling technology provider, offers one of the largest ranges of DTH rock drilling hammers and bits available in the industry today. The company boasts over 110 DTH products for drilling holes 3½ to 48 inches (89 – 1219 mm) in all types of conditions, applications, and industries.

Numa works with drillers on job sites around the world to support its products and gain first hand insight for advancing DTH product design.  The company holds 13 patents, with more pending, for DTH equipment capable of drilling vertical, horizontal, and reverse circulation holes. Numa products are used in over 11 industries including construction, oil & gas, mining, quarry, geothermal, water well, and many more.

Numa’s wide range of DTH products includes:


Drills holes from 3-1/2″ to 10″ (89 – 254 mm)

Numa offers eighteen different small diameter hammers for diverse drilling conditions. Built specifically for longevity and penetration rate, Numa’s Patriot® hammers and bits drill at high frequency and require less air. Even against high heads of water. 


Drills holes 7-7/8” to 20” (200 – 508 mm)

Numa’s mid-range hammers and bits provide a combination of speed and life to excel against hard, abrasive and just plain nasty conditions. A simplified hammer design with less internal components promotes less vibration and smooth operation.


Drills holes 18” to 48” (457 – 1219 mm)

Numa pioneered the large hammer industry and leads the market in performance and reliability. Our forward thinking designs have proven themselves again and again in demanding applications around the world.


Drills holes 5-1/4” to 36” (133 – 914 mm)

Numa’s Reverse Circulation products have the unique ability to bring all cuttings up the center of the hammer and drill string to be safely collected at the surface, which is essential in today’s environmentally conscious society.


Drills holes 5-1/2” to 42” (457 – 1066 mm)

Super Jaws provides superior performance for simultaneous drilling and casing in hard rock and overburden formations. Wings extend out to drill a full diameter hole then retract to bring all tooling to the surface. No expensive tools are left in the hole and no casing teeth are required.


Numa provides the world’s leading drilling technology with over 110 DTH Hammer and Bit products serving 11 different industries. Our products are capable of drilling vertical, horizontal, and reverse circulation holes from 3½ to 48 inches (89 – 1219 mm) in diameter and are used in 105+ countries. We have built our customer-centric reputation on providing the highest value in products, performance and personal service available in the rock drilling industry.